Johnson Matthey Public Limited Company

Jonathan David Radcliffe

Paul Richard Phillips

Andrew Francis Chiffey

Guy Richard Chandler

Stuart David Reid

Gavin Michael Brown

Raj Rao Rajaram

Desiree Duran-Martin

Gregory Gregori

Byron Truscott

Rebecca Maksymowicz

Nuria Lastra-Calvo

A lean NOtrap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean NOtrap catalyst comprises a first layer, a second layer, and a third layer.

NOadsorber catalyst

NOx adsorber catalyst

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

An exhaust system for an internal combustion engine, the exhaust system comprising, a lean NOtrap, a NOstorage and reduction zone on a wall flow monolithic substrate having a pre-coated porosity of 50% or greater, the NOstorage and reduction zone comprising a platinum group metal loaded on one or more first support, the or each first support comprising one or more alkaline earth metal compound, and a selective catalytic reduction zone on a monolithic substrate, the selective catalytic reduction zone comprising copper or iron loaded on a second support, the second support comprising a molecular sieve.

Exhaust system

A catalysed soot filter comprises an oxidation catalyst for oxidizing NO to NOand/or oxidizing CO to COand/or HC to COand HO disposed on a wall flow filter monolithic substrate, the oxidation catalyst comprising: a platinum group metal component, and a pre-calcined support material comprising a mixed magnesium aluminium metal oxide having a magnesium content, calculated as Mg, of 15 wt % Mg or lower.

Oxidation catalyst

Growing community of inventors

Royston, United Kingdom

Jonathan David Radcliffe