Johnson Matthey Public Limited Company

Johnson Matthey Catalysts (germany) Gmbh

Matthew Eben Harris

Neil Greenham

Alexander Nicholas Michael Green

Yannick Bidal

Daniel Avis

Paul Richard Phillips

Joseph Michael Fedeyko

Jing Lu

Alexander Green

Alanna Susan Murphy

Hai-Ying Chen

Guy Richard Chandler

Oliver Hemming

Caitlin Lucy Jenkins

Gavin Michael Brown

Joerg Werner Muench

Juergen Bauer

Nicholas McNamara

James Alexander Wylie

Irene Piras

Garry Adam Burgess

Maria Pia Ruggeri

Sofia Lopez-Orozco

Nikki Jane Amos-Reichert

Rafal Baran

Carmelo Iacono

Miroslaw Gall

Loredana Mantarosie

Jürgen Bauer

Daniel Robert Avis

Jörg Werner MÜNCH

Sofia Lopez-orozco

Nikki Jane Amos-reichert

Alexander Michael Green

A method of treating exhaust gas from a lean burn internal combustion engine is disclosed. The method comprises: introducing ammonia or an ammonia precursor into the exhaust gas upstream of an Fe-SCR catalyst, the Fe-SCR catalyst comprising iron and a zeolite; and contacting the exhaust gas with the Fe-SCR catalyst; wherein the amount of ammonia or ammonia precursor introduced into the exhaust gas upstream of the Fe-SCR catalyst is controlled to provide an ammonia-to-NOmolar ratio (ANR) in the exhaust gas contacting the Fe-SCR catalyst of from greater than 2 to 6.

Method of treating exhaust gas and system for same

Catalyst compositions and methods of preparation comprising: exchanging a rare earth element into a molecular sieve; incorporating a promoter metal into the molecular sieve; wherein the rare earth element exchanging step and the promoter metal incorporation step are performed as separate steps.

Catalyst for treating exhaust gas

A catalytic article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a support; a second catalytic region comprising a second PGM component on a support with low ammonia storage and a first SCR catalyst; and wherein the first catalytic region is covered by at least another catalytic region.

Zoned ammonia slip catalyst for improved selectivity, activity and poison tolerance

A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted zeolite comprising: i) Ce in a total amount of about 0.1 to about 200 g/ft; and ii) Mn in a total amount of about 0.1 to about 200 g/ft.

Catalytic composition for treating a NOx-containing exhaust gas

A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted small-pore zeolite comprising: i) Ce and/or La in a total amount of about 5 to about 400 g/ft; and ii) Nd and/or Nb in a total amount of about 5 to about 400 g/ft.

Catalytic composition

The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a plastic mixture having a solids content of greater than 50% by weight by mixing together a crystalline small pore or medium pore molecular sieve in an Hor NHform, an insoluble active metal precursor, an inorganic matrix component, an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.

Method for forming a catalyst article

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 catalyst article comprises an SCR catalyst and a NOx adsorber catalyst, where each of these catalysts comprise a metal molecular sieve, each with a different metal. The catalyst article can be close coupled with other components to give a NOperformance advantage from cold start to a combined DOC and SCRF system. Higher NOconversion is also shown in under-floor location due to NOx storage before SCR light off and selective NHslip control, allowing higher NH3 fill levels. Systems comprising the catalyst article and methods of using the catalyst article to give improved hydrocarbon and carbon monoxide control, as well as ammonia slip control, are described. The systems can include flow-through or wall-flow monoliths.

Combining SCR with PNA for low temperature emission control

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Royston, United Kingdom

Matthew Eben Harris