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Johnson Matthey Public Limited Company patents


Recent patent applications related to Johnson Matthey Public Limited Company. Johnson Matthey Public Limited Company is listed as an Agent/Assignee. Note: Johnson Matthey Public Limited Company may have other listings under different names/spellings. We're not affiliated with Johnson Matthey Public Limited Company, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "J" | Johnson Matthey Public Limited Company-related inventors


Transition metal/zeolite scr catalysts

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of cr, mn, fe, co, ce, ni, cu, zn, ga, mo, ru, rh, pd, ag, in, sn, re, ir and pt.. . ... Johnson Matthey Public Limited Company

Rear on-wall design scrf

A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow monolith comprising a porous substrate having surfaces that define the channels and having a first zone extending in the longitudinal direction from a first end face towards a second end face for a distance less than the filter length and a second zone downstream of the first zone, wherein a first scr catalyst is distributed throughout the first zone of the porous substrate, and a second scr catalyst is located on a layer that covers the surfaces in the second zone of the porous substrate. Systems and methods of using the filter in treating exhaust gases are described.. ... Johnson Matthey Public Limited Company

Catalytic wall-flow filter with an ammonia slip catalyst

A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow monolith comprising a porous substrate having surfaces that define the channels and having a first zone extending in the longitudinal direction from a first end face towards a second end face for a distance less than the filter length and a second zone extending in the longitudinal direction from the second end face towards the first end face and extending in the longitudinal direction for a distance less than the filter length, wherein a first scr catalyst is distributed throughout the first zone of the porous substrate, an ammonia oxidation catalyst is distributed throughout the second zone of the porous substrate and a second scr catalyst is located in a layer that covers the surfaces in the second zone of the porous substrate.. . ... Johnson Matthey Public Limited Company

Catalyst preparation method

A method is described for preparing a catalyst comprising the steps of (i) preparing a calcined shaped calcium aluminate catalyst support, (ii) treating the calcined shaped calcium aluminate support with water, and then drying the support, (iii) impregnating the dried support with a solution containing one or more metal compounds and drying the impregnated support, (iv) calcining the dried impregnated support, to form metal oxide on the surface of the support and (v) optionally repeating steps (ii), (iii) and (iv) on the metal oxide coated support. The method provides an eggshell catalyst in which the metal oxide is concentrated in an outer layer on the support.. ... Johnson Matthey Public Limited Company

Exhaust system without a doc having an asc acting as a doc in a system with an scr catalyst before the asc

. . Catalyst articles having a first zone containing a first scr catalyst and a second zone containing an ammonia slip catalyst (asc), where the ammonia slip catalyst contains a second scr catalyst and an oxidation catalyst, and the asc has doc functionality, where the first zone is located on the inlet side of the substrate and the second zone is located in the outlet side of the substrate are disclosed. The catalytic articles are useful for selective catalytic reduction (scr) of nox in exhaust gases, in reducing the amount of ammonia slip and in oxidizing organic residues. ... Johnson Matthey Public Limited Company

Chemical absorbent composition

A particulate composition said composition comprises a metal carbonate and/or a metal bicarbonate and a compound of aluminium, characterised in that the weight ratio of metal carbonate plus metal bicarbonate compounds to said compound of aluminium is at least 3:1. The composition is useful for removing halogenated compounds from a hydrocarbon-containing process stream.. ... Johnson Matthey Public Limited Company

Well liner

A tracer-liner portion comprises an inner tube and an outer tube, each including at least one wall having an internal surface and an external surface, the walls of the inner tube and the outer tube being impermeable to fluid flow, the outer tube having an internal diameter which is larger than the outer diameter of the inner tube, the inner tube being arranged coaxially within the outer tube such that at least a portion of the external surface of the inner tube is covered by the outer tube; the internal diameter of the outer tube exceeds the outer diameter of the inner tube by an amount sufficient to form a space between the external surface of the inner tube and the internal surface of the outer tube, and a tracer material containing a tracer compound is present in the space.. . ... Johnson Matthey Public Limited Company

Silica-modified catalyst supports

A method for preparing a silica-modified catalyst support is described comprising: (i) applying an alkyl silicate solution to a porous support material in an amount to produce a silica content of the silica-modified catalyst support, expressed as si, in the range 0.25 to 15% by weight, (ii) drying the resulting silicate-modified support and recovering a first alcoholic solution, (iii) optionally treating the dried silicate-modified support with water, drying the resulting water-treated support and recovering a second alcoholic solution, and (iv) calcining the dried material to form the silica-modified catalyst support, wherein the first alcoholic solution contains ≤10 vol % water and at least a portion of the first alcoholic solution is mixed with alkyl silicate to form the alkyl silicate solution.. . ... Johnson Matthey Public Limited Company

Aei zeolite synthesis

A novel method for synthesizing aei zeolites is provided which results in high overall relative yields on silica and the structure directing agent.. . ... Johnson Matthey Public Limited Company

Increased nox conversion by ozone introduction

Exhaust purification system and methods for the reduction of emissions from an exhaust stream, including an upstream catalyst coupled with a passive nox adsorber catalyst; means to contact the exhaust stream with ozone, to react no in the exhaust stream with the ozone to produce no2; and an scr catalyst.. . ... Johnson Matthey Public Limited Company

Benzo[h]quinoline ligands and complexes thereof

The present invention provides substituted tridentate benzo[h]quinoline ligands and complexes thereof. The invention also provides the preparation of the ligands and the respective complexes, as well as to processes for using the complexes in catalytic reactions.. ... Johnson Matthey Public Limited Company

Nox adsorber catalyst

A lean nox trap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean nox trap catalyst comprises a first layer and a second layer.. ... Johnson Matthey Public Limited Company

Method for preparing a sorbent

A method is described for preparing a sorbent precursor comprising the steps of: (i) forming agglomerates comprising a particulate support material, (ii) coating the agglomerates with a coating mixture powder comprising a particulate sulphidable copper compound and a particulate calcined, rehydratable alumina to form a coated agglomerate, and (iii) drying the coated agglomerate to form a dried sorbent precursor. The sorbent precursor may be sulphided and used to remove heavy metals such as mercury from fluid streams.. ... Johnson Matthey Public Limited Company

Method for preparing a sorbent

A method is described for preparing a sorbent comprising the steps of: (i) forming agglomerates comprising a particulate support material, (ii) coating the agglomerates with a coating mixture powder comprising a particulate copper sulphide and a particulate calcined, rehydratable alumina to form a coated agglomerate, and (iii) drying the coated agglomerate to form a dried sorbent.. . ... Johnson Matthey Public Limited Company

06/14/18 / #20180161752

Method for preparing a sorbent

A method is described for preparing a sorbent comprising the steps of: (i) mixing together a particulate copper sulphide material and a particulate calcined rehydratable alumina, (ii) shaping the mixture, and (iii) drying the shaped mixture to form a dried sorbent.. . ... Johnson Matthey Public Limited Company

06/07/18 / #20180155597

Controlled release system for the release of oil field chemicals and use of the system for reservoir treatment and monitoring

Compositions having a core and a coating that covers at least part of the core, where the core comprises a mixture of at least one oil field chemical and at least one core matrix polymer are described. The composition provides a slower release of an oil field chemical into an eluent compared to the release provide by the core. ... Johnson Matthey Public Limited Company

06/07/18 / #20180155274

Identifiable chemical product

The invention is a process for manufacturing a chemical product which may be later identified and distinguished from similar chemical products, and comprises the steps of (i) forming a reaction mixture comprising chemical intermediate a, chemical intermediate b and marker chemical m (ii) providing the conditions which enable chemical intermediate a and chemical intermediate b to react together to form chemical product c, and for marker chemical m to react either with chemical intermediate a to form a marker product am or with chemical product c to form a marker product cm (iii) after said reactions have taken place, separating a mixture of product c with product am and/or a mixture of product c with marker product cm from the reaction mix tune wherein product am and product cm are both distinguishable from product c by analysis. By using the method of the invention, the marked product is formed in situ and in a mixture with unmarked product.. ... Johnson Matthey Public Limited Company

05/31/18 / #20180148399

Process for aldehyde manufacture

The process of the invention is a process for the production of an aldehyde from the corresponding alcohol comprising the steps of feeding to a reactor a feed stream comprising said alcohol and an oxygen-containing gas; reacting said alcohol in the gas phase with said oxygen-containing gas in said reactor in the presence of a catalyst comprising oxides of iron and molybdenum, wherein the process further comprises the step of adding water to said feed stream. The process is particularly useful for the production of formaldehyde by the oxidation of methanol.. ... Johnson Matthey Public Limited Company

05/31/18 / #20180147569

Low phosphorus chabazites

A catalyst washcoat is provided having a molecular sieve with a cha crystal structure; about 0.5 to about 5.0 mol % phosphorus; and sio2 and al2o3 in a mole ratio of about 5 to about 40. The washcoat includes one or more promoters or stabilizers, and may be applied to a monolith substrate to produce a catalytically active article.. ... Johnson Matthey Public Limited Company

05/31/18 / #20180147530

Nh3 overdosing-tolerant scr catalyst

Catalysts having a blend of platinum on a support with low ammonia storage with a cu-scr catalyst or an fe-scr catalyst are disclosed. The catalysts can also contain one or two additional scr catalysts. ... Johnson Matthey Public Limited Company

05/03/18 / #20180119667

Electrically powered rotating subsea apparatus and method

A subsea apparatus (1, 201) is disclosed. The subsea apparatus (1, 201) comprises a first part (2, 202) and a second part (3, 203) rotatably mounted on the first part (2, 202). ... Johnson Matthey Public Limited Company

05/03/18 / #20180119589

Catalytic wall-flow filter with partial surface coating

A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow substrate having a first and a second face, and first and second pluralities of channels. The first plurality of channels is open at the first face and closed at the second face. ... Johnson Matthey Public Limited Company

05/03/18 / #20180119021

Catalyst precursor, method of preparation and use thereof

A catalyst precursor suitable for the fischer tropsch reaction is described comprising cobalt oxide supported on a porous support wherein the porous support is a ceramic foam comprising a closed cell structure.. . ... Johnson Matthey Public Limited Company

05/03/18 / #20180118643

Process for the preparation of vinyl chloride

A process for the production of vinyl chloride comprises the step of passing a feed stream comprising ethylene dichloride (edc) over a catalyst system comprising a dehydrochlorination catalyst and a hydrochlorination catalyst at a temperature, which may be in the range 150-350° c., sufficient to effect dehydrochlorination of the ethylene dichloride to produce vinyl chloride.. . ... Johnson Matthey Public Limited Company

05/03/18 / #20180117578

Shaped catalyst particle

The invention concerns particles which may include a catalytically active component, in the form of a three-dimensional ellipsoidal shape having three major axes at least two of which axes are of different lengths. Beds of such particles are useful for forming particle beds through which a fluid may flow.. ... Johnson Matthey Public Limited Company

05/03/18 / #20180117573

Lta catalysts having extra-framework iron and/or manganese for treating exhaust gas

Provided are compositions, articles, systems and methods that comprise or use a catalyst composition comprising a zeolite having an lta structure with iron, manganese or a combination thereof as an extra-framework metal. The zeolite can have a mole ratio of silica-to-alumina (sar) of about 15 to about 70 and can contain about 0.5 to about 10 weight percent, based on the total weight of the zeolite, of extra-framework iron, manganese or a combination thereof.. ... Johnson Matthey Public Limited Company

04/19/18 / #20180107407

Processes for making opioids including 14-hydroxycodeinone and 14-hydroxymorphinone

Improved processes for making opioid products having low impurity levels including making 14-hydroxycodeinone and 14-hydroxymorphinone from thebaine and oripavine, respectively.. . ... Johnson Matthey Public Limited Company

04/19/18 / #20180105499

Process for preparing alkyl esters of 4-(5-(bis(2-hydroxyethyl)amino-1-methyl-1h-benzo[d]imidazol-2-yl)butyric acid

An alkyl ester of 4-(5-(bis(2-hydroxyethyl)amino)-1-methyl-1h-benzo[d]imidazol-2-yl)butyric acid, such as ethyl 4-(5-(bis(2-hydroxyethyl)amino)-1-methyl-1h-benzo[d]imidazol-2-yl)butanoate, is obtained by reacting an alkyl ester of 4-(5-amino-1-methyl-1h-benzo[d]imidazol-2-yl)butyric acid with 2-hydroxyacetaldehyde under reducing conditions.. . ... Johnson Matthey Public Limited Company

04/19/18 / #20180104677

Oxidation catalyst for internal combustion engine exhaust gas treatment

The invention provides an exhaust gas cleaning oxidation catalyst and in particular to an oxidation catalyst for cleaning the exhaust gas discharged from internal combustion engines of compression ignition type (particularly diesel engines). The invention further relates to a catalysed substrate monolith comprising an oxidising catalyst on a substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine. ... Johnson Matthey Public Limited Company

04/12/18 / #20180100816

Apparatus and method for scanning a structure

. . A subsea apparatus and method for scanning a subsea structure to detect differences in density between different parts of the subsea structure is described. A source of gamma radiation and a plurality of detectors arranged to detect gamma radiation emitted by the source are provided. ... Johnson Matthey Public Limited Company

04/12/18 / #20180099923

Supported metal catalysts

The present invention relates to supported metal catalysts, wherein the catalysts are modified by at least one amine, a method for the preparation thereof and hydrogenation processes utilising the supported metal catalysts.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180094559

Nox adsrober catalyst

A nox adsorber catalyst composition, a nox adsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The nox adsorber catalyst composition a support material and one or more platinum group metals disposed on the support material, wherein the support material comprises a nox storage enhancer.. ... Johnson Matthey Public Limited Company

04/05/18 / #20180093897

Synthesis of afx zeolite

An alkali-free h-afx zeolite and synthesis procedure are disclosed, as well the use of such zeolite as a catalyst in an scr process.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180093259

Novel zeolite synthesis with alkaline earth metal

Provided are a novel form of afx zeolite, a novel synthesis technique for producing pure phase small pore zeolites, a novel synthesis method for producing a zeolite with an increased al pair content, a catalyst comprising the afx zeolite in combination with a metal, and methods of using the same.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180093258

Novel synthesis of metal promoted zeolite catalyst

Provided are a novel synthesis technique for producing a metal promoted aluminosilicate zeolite have a small pore framework and methods of using the same.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180093257

High silica aei zeolite

Provided are a novel form of aei zeolite, a novel synthesis technique for producing pure phase aei zeolite, a catalyst comprising the aei zeolite in combination with a metal, and methods of using the same.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180093256

Synthesis of aei and cu-aei zeolites

An alkali-free h-aei zeolite and synthesis procedure are disclosed, as well the use of such zeolite as a catalyst in an scr process.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180093255

Novel zeolite synthesis with a fluoride source

Provided are a novel synthesis technique for producing pure phase aluminosilicate zeolite and a catalyst comprising the phase pure zeolite in combination with a metal, and methods of using the same.. . ... Johnson Matthey Public Limited Company

04/05/18 / #20180093254

Nox adsrober catalyst

A nox adsorber catalyst composition, a nox adsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The nox adsorber catalyst composition a support material and one or more platinum group metals disposed on the support material, wherein the support material comprises a mixed dopant nox storage enhancer.. ... Johnson Matthey Public Limited Company

03/29/18 / #20180085707

Oxidation catalyst for a diesel engine exhaust

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: a copper (cu) component; a platinum group metal (pgm) selected from the group consisting of (i) platinum (pt), (ii) palladium (pd) and (iii) platinum (pt) and palladium (pd); and a support material, which is a refractory oxide comprising alumina; wherein the platinum group metal (pgm) and the copper (cu) component is each supported on the support material.. . ... Johnson Matthey Public Limited Company

03/22/18 / #20180078926

Ruthenium supported on supports having a rutile phase as stable catalysts for nh3-slip applications

An ammonia slip catalyst (asc) comprising a first scr catalyst, an oxidation catalyst comprising ruthenium or a ru mixture, such as a pt and ru mixture, on a support comprising a rutile phase and a substrate is described. In some configurations, the asc comprises a second oxidation catalyst. ... Johnson Matthey Public Limited Company

03/22/18 / #20180078900

Oxidation catalyst for a diesel engine exhaust

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine. The oxidation catalyst comprises a washcoat region disposed on a substrate, wherein the washcoat region comprises a mixture of: platinum (pt) supported on a first support material; and ruthenium (ru).. ... Johnson Matthey Public Limited Company

03/22/18 / #20180078898

Oxidation catalyst for hydrocarbons produced by an internal combustion engine

An oxidation catalyst is described for treating hydrocarbons in an exhaust gas produced by an internal combustion engine, wherein the oxidation catalyst comprises a region disposed on a substrate, wherein the region comprises ruthenium (ru) supported on a support material comprising a refractory oxide.. . ... Johnson Matthey Public Limited Company

03/15/18 / #20180072659

Process for the production of formaldehyde

. . A process is described for the production of formaldehyde, comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream; (b) separating said formaldehyde-containing stream into a formaldehyde product stream and a formaldehyde vent gas stream; wherein the vent gas stream, optionally after treatment in a vent gas treatment unit, is passed to one or more stages of: (i) synthesis gas generation, (ii) carbon dioxide removal, (iii) methanol synthesis or (iv) urea synthesis.. . ... Johnson Matthey Public Limited Company

03/15/18 / #20180072658

Integrated process for the production of formaldehyde-stabilized urea

A process for the production of formaldehyde-stabilised urea is described comprising the steps of: (a) generating a synthesis gas comprising hydrogen, nitrogen, carbon monoxide, carbon dioxide and steam in a synthesis gas generation unit; (b) recovering carbon dioxide from the synthesis gas to form a carbon dioxide-depleted synthesis gas; (c) synthesising methanol from the carbon dioxide-depleted synthesis gas in a methanol synthesis unit and recovering the methanol and a methanol synthesis off-gas comprising nitrogen, hydrogen and residual carbon monoxide; (d) subjecting at least a portion of the recovered methanol to oxidation with air in a formaldehyde production unit; (e) subjecting the methanol synthesis off-gas to methanation in a methanation reactor containing a methanation catalyst to form an ammonia synthesis gas; (f) synthesising ammonia from the ammonia synthesis gas in an ammonia production unit and recovering the ammonia; (g) reacting a portion of the ammonia and at least a portion of the recovered carbon dioxide stream in a urea production unit to form a urea stream; and (h) stabilising the urea by mixing the urea stream and a stabiliser prepared using formaldehyde recovered from the formaldehyde production unit, wherein a source of air is compressed and divided into first and second portions, the first portion is provided to the formaldehyde production unit for the oxidation of methanol and the second portion is further compressed and provided to the synthesis gas generation unit.. . ... Johnson Matthey Public Limited Company

03/15/18 / #20180071724

Jmz-5 and jmz-6, zeolites having an szr-type crystal structure, and methods of their preparation and use

Jmz-5, an aluminosilicate having an szr framework type and a sea-urchin type morphology is described. A calcined product, jmz-5c, formed from jmz-5 is also described. ... Johnson Matthey Public Limited Company

03/08/18 / #20180066554

Exhaust system with a modified lean nox trap

An exhaust system for treating an exhaust gas from an internal combustion engine is disclosed. The system comprises a modified lean nox trap (lnt), a urea injection system, and an ammonia-selective catalytic reduction catalyst. ... Johnson Matthey Public Limited Company

03/08/18 / #20180065113

Nox trap

A nox trap catalyst is disclosed. The nox trap catalyst comprises a noble metal, a nox storage component, a support, and a first ceria-containing material. ... Johnson Matthey Public Limited Company

03/08/18 / #20180065086

Diesel oxidation catalyst with nox adsorber activity

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first region for adsorbing nox, wherein the first region comprises a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve; a second region for oxidising carbon monoxide (co) and/or hydrocarbons (hcs), wherein the second region comprises palladium (pd), gold (au) and a support material; and a substrate having an inlet end and an outlet end.. ... Johnson Matthey Public Limited Company

03/08/18 / #20180065085

Diesel oxidation catalyst and exhaust system

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for oxidising carbon monoxide (co) and hydrocarbons (hcs), wherein the first washcoat region comprises a first platinum group metal (pgm) and a first support material; a second washcoat region for oxidising nitric oxide (no), wherein the second washcoat region comprises platinum (pt), manganese (mn) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.. ... Johnson Matthey Public Limited Company

03/08/18 / #20180065084

Diesel oxidation catalyst and exhaust system

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for oxidising carbon monoxide (co) and hydrocarbons (hcs), wherein the first washcoat region comprises a first platinum group metal (pgm) and a first support material; a second washcoat region for oxidising nitric oxide (no), wherein the second washcoat region comprises platinum (pt), manganese (mn) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.. ... Johnson Matthey Public Limited Company

03/08/18 / #20180065083

Diesel oxidation catalyst with nox adsorber activity

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises a washcoat region disposed on a substrate, wherein the washcoat region comprises: palladium (pd), gold (au) and a support material, wherein the palladium (pd) and gold (au) are supported on the support material; and a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve.. ... Johnson Matthey Public Limited Company

03/01/18 / #20180058293

Reduced sulfation impact on cu-scrs

Systems and methods related to an exhaust gas purification system comprising: an injector for injecting ammonia or a compound decomposable to ammonia into the exhaust gas, positioned downstream of an engine; a cu-scr catalyst positioned downstream of the injector, wherein no oxidation catalysts exist between the cu-scr catalyst and the engine; wherein the exhaust gas entering the cu-scr catalyst comprises an nh3/nox ratio of less than 1.2.. . ... Johnson Matthey Public Limited Company

03/01/18 / #20180056278

Oxidation catalyst for a diesel engine exhaust

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: iron (fe) or an oxide thereof; a platinum group metal (pgm) selected from the group consisting of (i) platinum (pt), (ii) palladium (pd) and (iii) platinum (pt) and palladium (pd); and a support material, which is a refractory oxide comprising alumina; wherein the platinum group metal (pgm) and the iron (fe) or an oxide thereof is each supported on the support material.. . ... Johnson Matthey Public Limited Company

03/01/18 / #20180056239

Oxidation catalyst for a diesel engine exhaust

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: antimony (sb) or an oxide thereof; a platinum group metal (pgm) selected from the group consisting of (i) platinum (pt), (ii) palladium (pd) and (iii) platinum (pt) and palladium (pd); and a support material, which is a refractory oxide; wherein the platinum group metal (pgm) and the antimony (sb) or an oxide thereof is each supported on the support material.. . ... Johnson Matthey Public Limited Company

02/15/18 / #20180043342

Exhaust system for a compression ignition engine having a capture region for volatilised platinum

An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine comprising: a substrate; a catalytic material disposed on the substrate, wherein the catalytic material comprises platinum (pt); and a region comprising a capture material, wherein the capture material comprises a pt-alloying metal disposed or supported on a refractory oxide, wherein the refractory oxide comprises at least 65% by weight of zirconia, wherein the region is arranged to contact the exhaust gas after the exhaust gas has contacted and/or passed through the catalytic material.. . ... Johnson Matthey Public Limited Company

02/08/18 / #20180038224

Tracer and method

The invention concerns a tracer material for tracing fluid flows from a hydrocarbon reservoir. The tracer material comprises a plurality of separate agglomerates. ... Johnson Matthey Public Limited Company

02/08/18 / #20180036680

Diesel oxidation catalyst having a capture region for sulfur containing impurities

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine. The oxidation catalyst comprises: a substrate; a capture material for capturing at least one sulfur containing impurity in the exhaust gas produced by the diesel engine; wherein the capture material comprises a metal for reacting with an oxide of sulfur in the exhaust gas and particles of a refractory oxide, wherein the particles of the refractory oxide have a mean specific surface area ≦50 m2/g; and a catalytic region disposed on the substrate; wherein the catalytic region comprises a catalytic material comprising a platinum group metal (pgm) selected from the group consisting of platinum (pt), palladium (pd) and a combination of platinum (pt) and palladium (pd).. ... Johnson Matthey Public Limited Company

02/01/18 / #20180029029

Oxidation catalyst for a compression ignition engine and a method of preparation therefor

An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine is described. The oxidation catalyst comprises a substrate and a catalytic coating disposed on the substrate, wherein the catalytic coating comprises a mixture of: (a) particles of a first catalytic material for oxidising carbon monoxide (co) and/or hydrocarbons (hcs); (b) particles of a second catalytic material for oxidising nitric oxide (no) and/or for absorbing oxides of nitrogen (nox).. ... Johnson Matthey Public Limited Company

02/01/18 / #20180028973

Filter

The present invention provides a filter comprising a base material and a catalytic substance provided within the base material, wherein the base material comprises a plurality of cells forming gas flow paths and having a gas inflow-side end portion and outflow-side end portion, and a plurality of porous partition walls defining said cells, the end portions of at least some of the cells being closed off, and the void occupancy of the catalytic substance within the pores of the partition walls is 10% or less.. . ... Johnson Matthey Public Limited Company

01/25/18 / #20180023439

Exhaust system for a compression ignition engine comprising a water adsorbent material

An exhaust system for a compression ignition engine comprising: a water adsorbent material; and a catalyst composition for treating an exhaust gas pollutant produced by the compression ignition engine; wherein the water adsorbent material is: (i) arranged to contact exhaust gas from the compression ignition engine before the catalyst composition; and (ii) in thermal communication with the catalyst composition.. . ... Johnson Matthey Public Limited Company

01/25/18 / #20180021768

Catalyst binders for filter substrates

Provided is a catalyst washcoat comprising (i) a molecular sieve loaded with about 1 to about 10 weight percent of at least non-aluminum promoter metal (wherein the promoter metal weight percent is based on the weight of the molecular sieve); and (ii) about 1 to about 30 weight percent of a binder having a d90 particle size of less than 10 microns (wherein the binder weight percent is based on the total weight of the washcoat). In another aspect of the invention, the catalyst washcoat is applied to a wall-flow filter to form a catalyst article. ... Johnson Matthey Public Limited Company

01/25/18 / #20180021724

Coated articles having high knox/ksox ratios for selective catalytic reduction

Articles comprising a catalyst film comprising vox, moo3 or wo3, and tio2 deposited on a substrate are disclosed. The articles are useful for selective catalytic reduction (scr) of nox in exhaust gases. ... Johnson Matthey Public Limited Company

01/18/18 / #20180015446

Oxidation catalyst for a stoichiometric natural gas engine

An oxidation catalyst for treating an exhaust gas produced by a stoichiometric natural gas (ng) engine comprising a substrate and a catalytic material for oxidising hydrocarbon (hc), wherein the catalytic material for oxidising hydrocarbon (hc) comprises a molecular sieve and a platinum group metal (pgm) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and optionally germanium.. . ... Johnson Matthey Public Limited Company

01/11/18 / #20180011208

Scanning method and apparatus

The invention discloses a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam.. . ... Johnson Matthey Public Limited Company

01/04/18 / #20180002185

Process for making ammonia

A process for production of ammonia includes: providing a reaction stream including carbon monoxide and hydrogen; passing the reaction stream and steam over a water gas shift catalyst in a catalytic shift reactor, forming a shifted gas mixture depleted in carbon monoxide and enriched in hydrogen; passing the shifted gas mixture with an oxygen-containing gas over a selective oxidation catalyst at ≧175° c., forming a selectively oxidized gas stream with a portion of the carbon monoxide converted to carbon dioxide; removing some of the carbon dioxide from the selectively oxidized gas stream in a carbon dioxide removal unit; passing the carbon dioxide depleted stream over a methanation catalyst in a methanator to form a methanated gas stream, optionally adjusting its hydrogen:nitrogen molar ratio to form an ammonia synthesis gas; and passing the ammonia synthesis gas over an ammonia synthesis catalyst in an ammonia converter to form ammonia.. . ... Johnson Matthey Public Limited Company

01/04/18 / #20180001306

Zoned diesel oxidation catalyst

An oxidation catalyst is described for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a substrate; a first washcoat region disposed on the substrate, wherein the first washcoat region comprises a first platinum group metal (pgm) and a first support material; a second washcoat region adjacent to the first washcoat region, wherein the second washcoat region comprises a second platinum group metal (pgm) and a second support material; a third washcoat region disposed on the substrate, wherein the third washcoat region comprises a third platinum group metal (pgm) and a third support material; and wherein either: (i) the third washcoat region is adjacent to the second washcoat region; or (ii) the second washcoat region is disposed or supported on the third washcoat region. Also described are uses and methods involving the oxidation catalyst.. ... Johnson Matthey Public Limited Company

12/21/17 / #20170362175

Novel forms of apremilast

The present disclosure is directed to novel forms of apremilast and pharmaceutical compositions comprising any of the novel forms of apremilast. Also provided are processes for the preparation of novel forms of apremilast.. ... Johnson Matthey Public Limited Company

12/14/17 / #20170356317

Nox adsorber catalyst

A nox adsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The nox adsorber catalyst comprises a first layer consisting essentially of a support material, one or more platinum group metals disposed on the support material, and a nox storage material.. ... Johnson Matthey Public Limited Company

12/07/17 / #20170348676

Catalyst manufacturing method

A method for producing a catalyst or catalyst precursor is described including: applying a slurry of a particulate catalyst compound in a carrier fluid to an additive layer manufactured support structure to form a slurry-impregnated support, and drying and optionally calcining the slurry-impregnated support to form a catalyst or catalyst precursor. The mean particle size (d50) of the particulate catalyst compound in the slurry is in the range 1-50 μm and the support structure has a porosity ≧0.02 ml/g.. ... Johnson Matthey Public Limited Company

11/30/17 / #20170341026

Vanadium catalysts for high engine-out no2 systems

. . An exhaust gas purification system for lowering the content of impurities in a lean exhaust gas of an internal combustion engine comprising, a feeding device that feeds ammonia or a compound decomposable to ammonia into an exhaust gas stream containing nitrogen oxides; a selective catalytic reduction catalyst comprising vanadium (v-scr catalyst) which catalyzes the nitrogen oxides with ammonia in a temperature range of about 150° c. To about 400° c. ... Johnson Matthey Public Limited Company

11/30/17 / #20170341022

Method and exhaust system for treating nox in exhaust gas from stationary emission sources

A method of selectively catalysing the reduction of oxides of nitrogen (nox) including nitrogen monoxide in an exhaust gas of a stationary source of nox emissions also containing oxides of sulfur (sox) comprising the steps of passively oxidising nitrogen monoxide to nitrogen dioxide (no2) over an oxidation catalyst comprising a platinum group metal so that a no2/nox content is from 40-60%; introducing a nitrogenous reductant into the exhaust gas; and contacting exhaust gas having the 40-60% no2/nox content and containing the nitrogenous reductant with a selective catalytic reduction (scr) catalyst comprising an aluminosilicate zeolite promoted with copper.. . ... Johnson Matthey Public Limited Company

11/23/17 / #20170333866

Expandable center arrangement

An expandable center arrangement for a reactor is disclosed. The arrangement comprises an expansion tube; a center support inside the expansion tube and three or more spring elements. ... Johnson Matthey Public Limited Company

11/23/17 / #20170333865

Methods and tools for installing reactor components

An installation tool for installing reactor components into a reactor is disclosed. The tool comprises a housing having a first end and a second end opposite the first end; a releasable attachment assembly for securing a reactor component support to the tool, the attachment assembly being pivotably inside the housing; a gas supply hose connected to the first end of the housing; and a gas outlet at the second end of the housing in fluid communication with the gas supply hose. ... Johnson Matthey Public Limited Company

11/09/17 / #20170320046

Nox adsorber catalyst

A nox adsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The nox adsorber catalyst composition comprises a support material, one or more platinum group metals disposed on the support material, and a nox storage material.. ... Johnson Matthey Public Limited Company

10/26/17 / #20170307531

Analytical method using surface enhanced raman spectroscopy and composition for the method

. . An identification method, for determining whether a sample of an unknown composition is a sample of a known composition to which a known amount of a sers-active taggant compound has been added, includes the steps of: obtaining a sample of the unknown composition; adding to the composition a plurality of sers particles to form a mixture, each sers particle including:—a core including a nanoparticle having a plasmonic surface,—a sers-active internal standard compound adjacent the plasmonic surface and,—a shell, the shell encapsulating the core and the sers-active internal standard compound; obtaining a sers spectrum from the mixture; and comparing the sers response ratio satc:saisc from the sers spectral response of the sers-active taggant compound and the sers spectral response of the sers-active internal standard compound in the unknown composition with the sers response ratio satc:saisc from the known composition.. . ... Johnson Matthey Public Limited Company

10/26/17 / #20170305751

Sta-18, a new member of the sfw family of molecular sieve zeotypes, methods of preparation and use

Sta-18, a molecular sieve having a sfw structure and containing phosphorus in the framework, is described. Sta-18ap (as prepared) can have a lower alkyl amine, such as trimethylamine, and one of 1,6-(1,4-diazabicyclo[2.2.2]octane)hexyl cations (from didabco-c6) or 1,7-(1,4-diazabicyclo[2.2.2]octane)heptyl cations (from didabco-c7) or 1,8-(1,4-diazabicyclo[2.2.2]octane)octyl cations (from didabco-c8) as sdas. ... Johnson Matthey Public Limited Company

10/26/17 / #20170304813

Methods of producing sapo-56, an afx-containing molecular sieve

The invention relates to a method of preparing sapo-56, (afx) using a lower alkyl amine, preferably trimethylamine, and a 1,4-diazabicyclo [2.2.2]octane derivative, preferably comprising either 1,4-(1,4-diazabicyclo[2.2.2]octane)butyl cations or 1,5-(1,4-diazabicyclo[2.2.2]octane)pentyl cations, as structure directing agents (sdas). A lower alkyl ammonium hydroxide, such as tetrabutylammonium hydroxide (tbaoh), can be used to control the ph. ... Johnson Matthey Public Limited Company

10/26/17 / #20170304812

Sta-19, a new member of the gme family of molecular sieve zeotypes, methods of preparation and use

Sta-19, a molecular sieve having a gme structure and phosphorus in the framework, is described. Sta-19ap (as prepared) can have a lower alkyl amine, such as trimethylamine, and olig-(1,4-diazabicyclo[2.2.2]octane)-pentyl dibromide ([dabco-c5]x where x represents the number of repeating units) or olig-(1,4-diazabicyclo[2.2.2] octane)-hexyl dibromide ([dabco-c6]x) as sdas. ... Johnson Matthey Public Limited Company

10/12/17 / #20170292869

Apparatus and method for determining a level of a fluid within a vessel

An apparatus and method for determining a level of a fluid within a vessel are disclosed. The apparatus includes: a source unit for emitting a beam of radiation into the interior of the vessel, the source unit including a source of radiation and a collimator for collimating radiation emitted by the source to provide the beam, wherein the source unit is adjustable to vary an angle of the beam with respect to horizontal; at least one detector for detecting radiation emitted by the source and having passed through at least a portion of the interior of the vessel; and a processor for: recording data corresponding to an amount of radiation detected at the at least one detector as a function of angle of the beam; and determining the level of the fluid, based on a variation of the data with the angle of the beam.. ... Johnson Matthey Public Limited Company

10/12/17 / #20170291162

Oxidation catalyst for diesel engines

This oxidation catalyst for diesel engines is divided into an upstream-side catalyst layer and a downstream-side inner catalyst layer in the flow direction of the exhaust gas, and a downstream-side outer catalyst layer is additionally formed so as to cover the surface of the downstream-side inner catalyst layer. The upstream-side catalyst layer and the downstream-side inner catalyst layer contain pd, and the downstream-side outer catalyst layer contains pt. ... Johnson Matthey Public Limited Company

10/05/17 / #20170284262

Co slip catalyst and method of using

. . A co slip catalyst, for treating an exhaust gas from a lean burn internal combustion engine, is disclosed. The co slip catalyst comprises palladium and a ceria-containing material. ... Johnson Matthey Public Limited Company

10/05/17 / #20170284250

In-exhaust electrical element for nox storage catalyst and scr systems

An exhaust system comprising: a nox storage catalyst; an electric heating element; and a nox reduction catalyst wherein the heating element is located downstream of the nox storage catalyst.. . ... Johnson Matthey Public Limited Company

09/28/17 / #20170275317

Complexes and methods for their preparation

Disclosed are methods for the preparation of ligands for complexes, methods for preparing complexes and complexes having those ligands. Also provided is the use of a complex as a catalyst in a method of synthesis.. ... Johnson Matthey Public Limited Company

08/24/17 / #20170239609

System and process for carbon dioxide removal of air of passenger cabins of vehicles

. . . . The present invention relates to systems and methods for conrolling the atmosphere in the cabin (1) of a vehicle. The system comprises a carbon dioxide removal conduit (2) comprising a regenerable carbon dioxide removal chamber (5,6) containing a carbon dioxide sorbent material and a regeneration circuit (7) arranged to expel the desorbed carbon diocide at a location exterior (8) of the cabin (1) the system is operable to maintain a carbon dioxide level below 1000 ppm in the passenger cabin for a period of at least 5 minutes while restricting the flow of air from outside the vehicle into the passenger cabin to 10 l/s or less.. ... Johnson Matthey Public Limited Company

08/10/17 / #20170226485

Catalyst and use thereof

Disclosed is a method that includes use of a catalyst in a method of reducing a substrate, the method including contacting a substrate with a catalyst, optionally in the presence of a co-substrate, thereby to generate a reduced substrate. The catalyst is a polypeptide including an amino acid sequence having at least 70% identity to seq id no: 1, seq id no: 7 or seq id no: 9. ... Johnson Matthey Public Limited Company

08/03/17 / #20170222406

Rhodium alloys

Disclosed is an electrode including a rhodium alloy, wherein the rhodium alloy includes rhodium and nickel. The alloy includes a greater quantity of rhodium as compared to any other individual element of the alloy.. ... Johnson Matthey Public Limited Company

08/03/17 / #20170218529

Cathode material

A cathode material comprising a titanium sheet and platinum, the platinum being in the form of nanoparticles deposited on at least one side of the titanium sheet, to form a decoration thereon, and processes for the preparation thereof.. . ... Johnson Matthey Public Limited Company

08/03/17 / #20170218482

Rhodium alloys

Disclosed is a rhodium alloy including: rhodium; one or more elements selected from the group consisting of iridium, platinum, palladium and ruthenium; and one or more elements selected from the group consisting of yttrium, zirconium and samarium. The alloy includes a greater quantity of rhodium as compared to any other individual element of the alloy. ... Johnson Matthey Public Limited Company

08/03/17 / #20170217978

Method of preparing buprenorphine

An improved process for preparing buprenorphine and a method for increasing the yield of buprenorphine or a derivative thereof.. . ... Johnson Matthey Public Limited Company

08/03/17 / #20170216826

Transition metal-containing aluminosilicate zeolite

A synthetic aluminosilicate zeolite catalyst containing at least one catalytically active transition metal selected from the group consisting of cu, fe, hf, la, au, in, v, lanthanides and group viii transition metals, which aluminosilicate zeolite is a small pore aluminosilicate zeolite having a maximum ring size of eight tetrahedral atoms, wherein the mean crystallite size of the aluminosilicate zeolite determined by scanning electron microscope is >0.50 micrometer.. . ... Johnson Matthey Public Limited Company

08/03/17 / #20170216822

Oxidation catalyst for a compression ignition engine

An oxidation catalyst for treating an exhaust gas from a compression ignition engine, which oxidation catalyst comprises: a substrate; a first washcoat region comprising palladium (pd) and a first support material comprising cerium oxide; and a second washcoat region comprising platinum (pt) and a second support material.. . ... Johnson Matthey Public Limited Company

08/03/17 / #20170216770

Diesel oxidation catalyst and exhaust system

An oxidation catalyst for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a first washcoat region comprising a first platinum group metal (pgm), a first support material and a nox storage component; a second washcoat region comprising platinum (pt), manganese (mn) and a second support material; and a substrate having an inlet end and an outlet end.. . ... Johnson Matthey Public Limited Company

07/27/17 / #20170211455

Exhaust system

An exhaust system for an internal combustion engine comprises a lean nox trap, a nox storage and reduction zone on a wall flow monolithic substrate having a pre-coated porosity of 50% or greater, the nox storage and reduction zone comprising a platinum group metal loaded on one or more first support, the or each first support comprising one or more alkaline earth metal compound, and a selective catalytic reduction zone on a monolithic substrate, the selective catalytic reduction zone comprising copper or iron loaded on a second support, the second support comprising a molecular sieve.. . ... Johnson Matthey Public Limited Company

07/27/17 / #20170210744

Process for preparing a carbapenem antibiotic

A process for the preparation of a carbapenem, includes the step of treating a solution of a protected carbapenem with hydrogen gas in the presence of a heterogeneous catalyst to form the carbapenem, wherein the heterogeneous catalyst includes at least two platinum group metals.. . ... Johnson Matthey Public Limited Company

07/27/17 / #20170209857

Catalysts for treating transient nox emissions

A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones.. . ... Johnson Matthey Public Limited Company

07/13/17 / #20170199032

Apparatus for determining thickness of lining layer

An apparatus (2) for determining thickness of refractory material (4) lining a metal vessel (6) is disclosed. The apparatus includes a radiation source (16) for emitting radiation through a metal wall of the vessel and into the refractory material, wherein some of the radiation is scattered by the refractory material, and a radiation detector (20) for detecting radiation scattered by the refractory material through the wall of the vessel. ... Johnson Matthey Public Limited Company

07/06/17 / #20170189854

Ammonia slip catalyst

Provided is an ammonia slip catalyst article having supported palladium in a top or upstream layer for oxidation of carbon monoxide and/or hydrocarbons, an scr catalyst either in the top layer or in a separate lower or downstream layer, and an ammonia oxidation catalyst in a bottom layer. Also provided are methods for treating an exhaust gas using the catalyst article, wherein the treatment involves reducing the concentrations of ammonia and optionally carbon monoxide and/or hydrocarbons in the exhaust gas.. ... Johnson Matthey Public Limited Company

06/29/17 / #20170182482

Catalyst blends

Provided is a catalyst for the selective reduction of nox comprising a two molecular sieve materials having a cha structure, wherein the first molecular sieve has a mean crystal size of about 0.01 to 1 μm and the second molecular sieve has a mean crystal size of about 1-5 μm, and wherein the first molecular sieve contains a first extra-framework metal, the second molecular sieve contains a second extra-framework metal, and wherein said first and second extra-framework metals are independently selected from the group consisting of cesium, copper, nickel, zinc, iron, tin, tungsten, molybdenum, cobalt, bismuth, titanium, zirconium, antimony, manganese, chromium, vanadium, niobium, and combinations thereof.. . ... Johnson Matthey Public Limited Company

06/22/17 / #20170173530

Exhaust system for a lean-burn internal combustion engine including scr catalyst

. . An exhaust system 20 for an internal combustion engine comprises a) a first catalysed substrate monolith 12 comprising a first washcoat coating disposed in a first washcoat zone 16 of the substrate monolith and a second washcoat coating disposed in a second washcoat zone 18 of the substrate monolith, wherein the first washcoat coating comprises a catalyst composition comprising at least one platinum group metal (pgm) and at least one support material, wherein at least one pgm in the first washcoat coating is liable to volatilise when the first washcoat coating is exposed to relatively extreme conditions including relatively high temperatures, wherein the second washcoat coating comprises at least one material supporting copper for trapping volatilised pgm and wherein the second washcoat coating is oriented to contact exhaust gas that has contacted the first washcoat; and b) a second catalysed substrate monolith 14 comprising a catalyst for selectively catalysing the reduction of oxides of nitrogen to dinitrogen with a nitrogenous reductant disposed downstream from the first catalysed substrate monolith.. . ... Johnson Matthey Public Limited Company

06/01/17 / #20170151532

Diesel oxidation catalyst having a capture region for exhaust gas impurities

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine, wherein the oxidation catalyst comprises: a substrate; a capture material for capturing at least one phosphorus containing impurity and/or at least one sulfur containing impurity in the exhaust gas produced by the diesel engine; and a catalytic region disposed on the substrate; wherein the catalytic region comprises a catalytic material comprising a platinum group metal (pgm) selected from the group consisting of platinum (pt), palladium (pd) and a combination of platinum (pt) and palladium (pd).. . ... Johnson Matthey Public Limited Company

05/18/17 / #20170137914

Mercury removal

Disclosed is selective removal of mercury from aqueous feeds also including precious metals. In particular, the present invention is useful for removal of mercury from processing waters produced during precious metal mining processes. ... Johnson Matthey Public Limited Company

05/11/17 / #20170128922

Cold start catalyst and its use in exhaust systems

A cold start catalyst is disclosed. The cold start catalyst comprises a zeolite catalyst and a supported platinum group metal catalyst. ... Johnson Matthey Public Limited Company

05/11/17 / #20170128921

Aluminosilicate aei zeolite preparation

A novel method for synthesizing aei zeolites is provided which results in high relative yields of aei based on the weight of the reaction mixture and on the structure directing agent. The method also provides for the reduced use of water in the reaction mixture.. ... Johnson Matthey Public Limited Company

05/04/17 / #20170122887

Apparatus and method for scanning a structure, and collimator therefor

. . . . An apparatus for scanning a structure to detect density differences between different structure parts, the apparatus includes a source of gamma radiation, a plurality of first detectors arranged to detect radiation emitted by the source along a plurality of respective first paths, a plurality of second detectors arranged to detect radiation emitted by the source along a plurality of respective second paths. Each first and second path is substantially aligned with a respective radius of a circle centered on the source, and an angular separation between at least two neighbouring first paths is s. ... Johnson Matthey Public Limited Company

05/04/17 / #20170120192

Oxidation catalyst

A catalysed soot filter comprises an oxidation catalyst for oxidizing no to no2 and/or oxidizing co to co2 and/or hc to co2 and h2o disposed on a wall flow filter monolithic substrate, the oxidation catalyst comprising: a platinum group metal component, and a pre-calcined support material comprising a mixed magnesium aluminium metal oxide having a magnesium content, calculated as mg, of 15 wt % mg or lower.. . ... Johnson Matthey Public Limited Company

04/20/17 / #20170107878

Exhaust system

An exhaust system for an internal combustion engine, the exhaust system comprising, a lean nox trap, a nox storage and reduction zone on a wall flow monolithic substrate having a pre-coated porosity of 50% or greater, the nox storage and reduction zone comprising a platinum group metal loaded on one or more first support, the or each first support comprising one or more alkaline earth metal compound, and a selective catalytic reduction zone on a monolithic substrate, the selective catalytic reduction zone comprising copper or iron loaded on a second support, the second support comprising a molecular sieve.. . ... Johnson Matthey Public Limited Company

04/20/17 / #20170106337

Oxidation catalyst for a diesel engine exhaust

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: bismuth (bi), antimony (sb) or an oxide thereof; a platinum group metal (pgm) selected from the group consisting of (i) platinum (pt), (ii) palladium (pd) and (iii) platinum (pt) and palladium (pd); and a support material, which is a refractory oxide: wherein the platinum group metal (pgm) is supported on the support material; and wherein the bismuth (bi), antimony (sb) or an oxide thereof is supported on the support material and/or the refractory oxide comprises the bismuth, antimony or an oxide thereof.. . ... Johnson Matthey Public Limited Company

04/06/17 / #20170096923

Passive nox adsorber

A nox absorber catalyst for treating an exhaust gas from a diesel engine. The nox absorber catalyst comprises a first nox absorber material comprising a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve, and wherein the molecular sieve contains the noble metal; a second nox absorber material comprising palladium (pd) supported on an oxide of cerium; and a substrate having an inlet end and an outlet end.. ... Johnson Matthey Public Limited Company

04/06/17 / #20170096922

Exhaust system comprising a passive nox adsorber

An exhaust system for treating an exhaust gas produced by a lean burn engine comprising: (i) a nox absorber catalyst comprising a molecular sieve catalyst disposed on a substrate, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; (ii) means for introducing hydrocarbons into the exhaust gas; and (iii) a lean nox trap; wherein the nox absorber catalyst is upstream of both the means for introducing hydrocarbons into the exhaust gas and the lean nox trap.. . ... Johnson Matthey Public Limited Company

04/06/17 / #20170095805

Passive nox adsorber

A nox absorber catalyst for treating an exhaust gas from a lean burn engine. The nox absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.. ... Johnson Matthey Public Limited Company

03/30/17 / #20170087541

Zoned ammonia slip catalyst for use in combustion turbines

A catalytic article for treating an exhaust gas stream containing one or more of nox, hydrocarbons, co, sox and ammonia from a combustion turbine comprises (a) a substrate having an inlet end and an outlet end defining an axial length; (b) an oxidation layer comprising an oxidation catalyst comprising one or more noble metals, the oxidation layer being positioned on the substrate and covering the axial length of the substrate; and (c) an scr layer comprising an scr catalyst, the scr layer being positioned on the oxidation layer and overlapping a portion of the oxidation layer, wherein the portion is less than 100%.. . ... Johnson Matthey Public Limited Company

03/30/17 / #20170087513

Catalytic filter having a soot catalyst and an scr catalyst

A catalytic filter is provided having a mixture of an scr catalyst and soot oxidation catalyst where the soot oxidation catalyst is a copper doped ceria, iron doped ceria or manganese doped ceria. The mixture of an scr catalyst and soot oxidation catalyst provides for a lowering of the peak oxidation temperature for soot removal from the filter. ... Johnson Matthey Public Limited Company

03/30/17 / #20170087512

Oxidation catalyst for treating the exhaust gas of a compression ignition engine

An exhaust system for a compression ignition engine comprising an oxidation catalyst for treating carbon monoxide (co) and hydrocarbons (hcs) in exhaust gas from the compression ignition engine, wherein the oxidation catalyst comprises: a platinum group metal (pgm) component selected from the group consisting of a platinum (pt) component, a palladium (pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component; and a substrate, wherein the platinum group metal (pgm) component, the alkaline earth metal component and the support material are disposed on the substrate.. . ... Johnson Matthey Public Limited Company

03/23/17 / #20170081350

Processes for the preparation of ruthenium or osmium complexes comprising p and n donor ligands

An improved processes for the preparation of ruthenium or osmium complexes including p and n donor ligands, in particular, ruthenium complexes.. . ... Johnson Matthey Public Limited Company

03/23/17 / #20170080388

Gasoline engine with an exhaust system for combusting particulate matter

A gasoline engine having an exhaust system comprises means for trapping particulate matter (pm) from the exhaust gas and a catalyst for catalysing the oxidation of the pm by carbon dioxide and/or water in the exhaust gas, which catalyst comprising a supported alkali metal. The invention further includes a method of combusting pm from a gasoline engine in co2 and/or h2o from the exhaust gas at temperatures in excess of 500° c., which method comprising trapping the pm and contacting it with a catalyst comprising a supported alkali metal.. ... Johnson Matthey Public Limited Company

03/16/17 / #20170072381

Desulphurisation material comprising copper supported on zinc oxide

A particulate desulfurization material includes one or more copper compounds supported on a zinc oxide support material, wherein the desulfurization material has a copper content in the range 0.1 to 5.0% by weight and a tapped bulk density ≧1.55 kg/l. The material is obtained by (i) mixing a powdered copper compound with a particulate zinc support material comprising zinc oxide and one or more precursors that form zinc oxide upon calcination, and one or more binders to form a copper-containing composition, (ii) shaping the copper-containing composition by granulation, and (iii) drying and calcining the resulting granulated material.. ... Johnson Matthey Public Limited Company

03/16/17 / #20170072364

Nox trap composition

A nox trap composition, and its use in an exhaust system for internal combustion engines, is disclosed. Nox trap composition comprises a platinum group metal, barium, cobalt, and a magnesia-alumina support. ... Johnson Matthey Public Limited Company

03/09/17 / #20170069908

Process for the preparation of carbon-coated lithium transition metal phosphate and its use

A process for the preparation of carbon-coated lithium transition metal phosphate having the formula li0.9+xmymn1−ypo4 and its use as cathode material in secondary lithium-ion batteries wherein the process includes few synthesis steps which can be conducted easily, therefore providing a low cost process and results in a complete reaction of the starting material compounds or the mixtures thereof. At least one starting material compound is dispersed or dissolved in an essentially aqueous medium and heated to a temperature between 50° c. ... Johnson Matthey Public Limited Company

03/02/17 / #20170056866

Three-way catalyst and its use in exhaust systems

A three-way catalyst is disclosed. The three-way catalyst comprises a silver-containing extruded zeolite substrate and a catalyst layer disposed on the silver-containing extruded zeolite substrate. ... Johnson Matthey Public Limited Company

02/16/17 / #20170045465

Apparatus and method for scanning a structure

An apparatus and method for scanning a structure for detecting variations in density of a structure, the apparatus (10) includes: a source of radiation (20); a plurality of detectors (30), arranged for receiving radiation emitted by the source along a plurality of respective paths (26); the apparatus configured such that, a structure (100) to be scanned is positionable between the detectors and the source; collimation elements (40) including a plurality of collimator channels (42), each located between a respective detector and the source; and collimation adjustment element (60). The apparatus, in a first configuration, provides a first resolution (r1) in an axial direction substantially orthogonal to a plane including the source and plurality of paths; and, in a second configuration, the collimation adjustment element is positioned between the collimation elements and the source such that the apparatus provides a second resolution (r2) in the axial direction; wherein r2<r1.. ... Johnson Matthey Public Limited Company

02/16/17 / #20170044050

Conductive paste, electrode and solar cell

The present invention relates to conductive pastes suitable for use in solar cells, to a method of manufacturing a light receiving surface electrode of a solar cell, and to a light receiving surface of a solar cell. The paste includes a mixed oxide (e.g. ... Johnson Matthey Public Limited Company

02/16/17 / #20170043322

Nox trap

A nox trap comprises components comprising at least one platinum group metal, at least one nox storage material and bulk ceria or a bulk cerium-containing mixed oxide deposited uniformly in a first layer on a honeycombed substrate monolith, the components in the first layer having a first, upstream, zone having increased activity relative to a second, downstream zone for oxidising hydrocarbons and carbon monoxide, and a second, downstream, zone having increased activity to generate heat during a desulphation event, relative to the first zone, wherein the second zone comprises a dispersion of rare earth oxide, wherein the rare earth oxide loading in the second zone is greater than the loading in the first zone. An exhaust system for a lean burn internal combustion engine, a vehicle comprising a lean burn internal combustion engine and the exhaust system and methods of making the nox trap are also disclosed.. ... Johnson Matthey Public Limited Company

02/02/17 / #20170030844

Scanning instrument

A scanning apparatus for measuring the attenuation of radiation passing from a radiation source along a radiation path to a radiation detector includes a source of radiation; at least one radiation detector capable of detecting radiation emitted by the source a data processor associated with the at least one radiation detector for calculating a property of material present in a linear radiation path between the source and the at least one detector; and a spacer arranged between the source and the at least one detector. The spacer defines a space which is capable of excluding water and having an average density which is less than 1 gcm−3. ... Johnson Matthey Public Limited Company

01/12/17 / #20170009623

Nitrogen oxides (nox) storage catalyst

. . A catalyst for storing nitrogen oxides (nox) in an exhaust gas from a lean burn engine comprising a nox storage material and a substrate, wherein the nox storage material comprises a nox storage component and an no oxidation promoter on a support material, wherein the no oxidation promoter is manganese or an oxide, hydroxide or carbonate thereof.. . ... Johnson Matthey Public Limited Company

01/12/17 / #20170007985

Catalytic converter

In order to specify a catalytic converter, especially scr catalytic converter, with maximum catalytic activity, this catalytic converter has at least one catalytically active component and additionally at least one porous inorganic filler component having meso- or macroporosity. The organic porous filler component has a proportion of about 5 to 50% by weight. ... Johnson Matthey Public Limited Company

01/05/17 / #20170001169

Passive nox adsorber

A passive nox adsorber is disclosed. The passive nox adsorber is effective to adsorb nox at or below a low temperature and release the adsorbed nox at temperatures above the low temperature. ... Johnson Matthey Public Limited Company








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