Johnson Matthey Public Limited Company

Andrew Armitage

Paul Richard Phillips

Stuart David Reid

Daniel Swallow

Raj Rao Rajaram

Paul James Millington

Andrew Francis Chiffey

Francois Moreau

John Benjamin Goodwin

James Leeland

Dongxia Liu

Desiree Duran-Martin

Desiree Duran Martin

Nuria Lastra-Calvo

Rebecca Maksymowicz

Amy Kolpin

David Xuereb

Wolfgang Strehlau

The present invention provides a catalyst 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 support material particles; at least some of the support material particles are rhodium-supporting support material particles having rhodium supported thereon at a concentration of from 0.001 to 3.5 wt. %, based on the weight of the rhodium-supporting support material particle; and the rhodium is present at a loading of up to 20 g/ftrelative to the first catalytic region.

Catalyst article having high local rhodium concentration

A NOadsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The NOadsorber catalyst comprises a first layer consisting essentially of a support material, one or more platinum group metals disposed on the support material, and a NOstorage material.

NOx adsorber catalyst

A NOadsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The NOadsorber catalyst composition comprises a support material, one or more platinum group metals disposed on the support material, and a NOstorage material.

NOadsorber catalyst

A catalyst for storing nitrogen oxides (NO) in an exhaust gas from a lean burn engine comprising a NOstorage material and a substrate, wherein the NOstorage material comprises a NOstorage component and an NO oxidation promoter on a support material, wherein the NO oxidation promoter is manganese or an oxide, hydroxide or carbonate thereof.

Nitrogen oxides (NOx) storage catalyst

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Royston, United Kingdom

Andrew Armitage