Johnson Matthey Public Limited Company

Johnson Matthey Catalysts (germany) Gmbh

Other

Johnson Matthey Inc.

Joseph Michael Fedeyko

Hai-Ying Chen

Paul Joseph Andersen

Raul Francisco Lobo

Jing Lu

Erich Conlan Weigert

Trong Pham

John Leonello Casci

Jillian Elaine Collier

Guy Richard Chandler

Raj Rao Rajaram

Alexander Nicholas Michael Green

Arthur Joseph Reining

Philip Gerald Blakeman

Nicholas McNamara

Alejandra Rivas-Cardona

Julian Peter Cox

Kevin Doura

Robert Peter Hodgkins

David Thompsett

Neil Greenham

Matthew Eben Harris

Shadab Sharif Mulla

Debnath De

Wendy Manning

Yannick Bidal

Rodney Kok Shin Foo

Paul Richard Phillips

Stuart David Reid

Todd Howard Ballinger

Dongxia Liu

Sanyuan Yang

James Alexander Wylie

Jelvehnaz Mirzababaei

Agnes Suganya Raj

Mikael Larsson

David Micallef

Andrew Newman

Maria Theresia Brandmair

Dirk Reichert

Alexander Green

Jillian Elaine Bailie

Thomas Yeh

Silvia Alcove Clave

Rita Aiello

Harald Scherbel

Anthony Ferraro

Per Marsh

Andrew Scullard

Duncan Winterborn

Eric Burkholder

Qingling Liu

Tilman Knorr

Simon Knoll

Kenneth Koehler

Harald Schreiber

Scott Cauffman

Erich Weigert

Julian P Cox

Erich C Weigert

Robert P Hodgkins

Jilian Elaine Collier

Alejandra Rivas-cardona

Julian Cox

A method and exhaust gas treatment system for treating an ammonia-containing exhaust gas, for example a livestock house exhaust gas. The exhaust gas treatment system comprises a plurality of sorbent beds comprising a copper-doped small-pore zeolite, a valve system configured to establish independently for each sorbent bed fluid communication in a first or second configuration, wherein in the first configuration a flow of ammonia-containing exhaust gas contacts the sorbent bed at a temperature of less than 50° C. for storing the ammonia; and in the second configuration a flow of heated gas maintains the sorbent bed at a temperature of at least 300° C. for releasing and treating the ammonia in situ.

Exhaust gas treatment system for an ammonia-containing exhaust gas

The present invention relates to a compressed natural gas combustion and exhaust system comprising: (i) a natural gas combustion engine and (ii) an exhaust treatment system comprising an intake for receiving an exhaust gas from the combustion engine and a catalyst article arranged to receive and treat the exhaust gas, wherein the catalyst article comprises: a substrate having at least first and second coatings, the first coating comprising a palladium-containing alumina and/or a base-metal containing alumina and the second coating comprising a palladium-containing zeolite, wherein the first coating is arranged to contact the exhaust gas before the second coating; and, wherein the system is configured to selectively operate in: (a) a lean first mode in which sulphur is trapped on the first coating; and (b) a rich second mode whereby sulphur is released from the first coating. The present invention further relates to a method.

Compressed natural gas combustion and exhaust system

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, Jr and Pt.

Transition metal/zeolite SCR catalysts

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.

Zeolite synthesis with alkaline earth metal

An exhaust system for the treatment of an exhaust gas comprising a species to be treated, the system comprising: a first gas inlet for providing a flow of exhaust gas; a second gas inlet for providing a flow of heated gas; a plurality of sorbent beds for releasably storing the species; one or more catalysts for decomposing the species; first and second exhaust gas outlets; and a valve system configured to establish independently for each sorbent bed fluid communication in a first or second configuration, wherein: i) in the first configuration the flow of the exhaust gas from the first gas inlet contacts a sorbent bed for storing the species and then passes to the first gas outlet; and ii) in the second configuration the flow of heated gas from the second gas inlet contacts a sorbent bed for releasing the species, passes to one of the one or more catalysts and then passes to the second exhaust gas outlet; wherein the valve system is configured to ensure that at least one sorbent bed is in the first configuration and, preferably at least one other sorbent bed is in the second configuration.

Exhaust gas treatment system

The present invention relates to a method for the treatment of an exhaust gas comprising carbon monoxide (CO) and/or one or more volatile organic compounds (VOCs) using a PGM-free catalyst article comprising a mixed oxide of Mn, Cu, Mg, Al and La. The present invention also relates to an HVAC system comprising a PGM-free catalyst article.

Method for the treatment of an exhaust gas and an HVAC system

A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone includes a passive NOx adsorber (PNA), and an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer with a second SCR catalyst, the top layer located over the bottom layer.

Single brick SCR/ASC/PNA/DOC close-coupled catalyst

The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO&#x2014;AlOmixed oxide. The platinum may be fixed on the support in solution.

Ammonia slip catalyst with in-situ PT fixing

The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst comprising a Cu- and Mn-exchanged molecular sieve; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO-AlOmixed oxide. The platinum may be fixed on the support in solution.

A catalyst composition for treating an exhaust gas, the catalyst composition comprising a molecular sieve, the molecular sieve comprising exchanged copper and exchanged manganese.

Bimetallic Cu/Mn catalysts for selective catalytic reduction

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.

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. The pure phase aluminosilicate zeolite can be selected from those having an ITW framework and a silica to alumina ratio of less than about 140 or, an STW framework and a silica to alumina ratio less than about 100.

Zeolite synthesis with a fluoride source

A process for the preparation of an extra-framework metal-containing aluminosilicate zeolite involves the steps of: (a) forming a reactant mixture A comprising (i) an aqueous slurry of an aluminosilicate zeolite in a H-form, and (ii) a metal containing compound or free metal, wherein the mixture does not comprise ammonia, ammonium hydroxide or an ammonium salt, and (b) reacting the metal containing compound or free metal with the aluminosilicate zeolite in a H-form in reactant mixture A and forming a product mixture B, a reaction mixture comprising the extra-framework metal-containing aluminosilicate zeolite. The metal comprises one or more of copper, iron, manganese, nickel and palladium. The step of reacting the metal with the aluminosilicate zeolite in a H-form is performed in a single exchange. The extra-framework metal-containing aluminosilicate zeolite can then be used directly in forming a washcoat that can be applied to a support.

Enhanced introduction of extra-framework metal into aluminosilicate zeolites

A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.

Mixed template synthesis of low silica CHA zeolite

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Glen Mills, PA, United States of America

Joseph Michael Fedeyko