Johnson Matthey Public Limited Company

Daniel Avis

Matthew Eben Harris

Alexander Nicholas Michael Green

Neil Greenham

Alanna Susan Murphy

Paul Richard Phillips

Yannick Bidal

Oliver Hemming

Caitlin Lucy Jenkins

Guy Richard Chandler

Gavin Michael Brown

Joerg Werner Muench

Juergen Bauer

Alexander Green

Irene Piras

Maria Pia Ruggeri

Carmelo Iacono

Loredana Mantarosie

Sofia Lopez-Orozco

Nikki Jane Amos-Reichert

Rafal Baran

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

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

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Royston, United Kingdom

Daniel Avis