Johnson Matthey Public Limited Company

Alanna Susan Murphy

Matthew Eben Harris

Daniel Avis

Alexander Nicholas Michael Green

Oliver Hemming

Caitlin Lucy Jenkins

Paul Richard Phillips

Gavin Michael Brown

Neil Greenham

Alexander Green

Maria Pia Ruggeri

Rafal Baran

Carmelo Iacono

Loredana Mantarosie

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 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

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Royston, United Kingdom

Alanna Susan Murphy