Johnson Matthey Public Limited Company

Timothy Ian Hyde

David Thompsett

Janet M Fisher

Robert J Potter

Alec Gordon Gunner

Torquil George Spenser Landen

A three-way catalyst (TWC) composition comprises a manganese-containing oxygen storage component (OSC) and at least one optionally doped alumina wherein where the at least one alumina is gamma-alumina it is doped with at least one of a rare earth metal, silicon, germanium, phosphorus, arsenic, calcium, strontium or barium.

Manganese containing oxygen storage component comprising three-way catalyst composition

New three-way catalysts for vehicles contain, as an oxygen storage component, mixed oxide MnZr. These components are less expensive than state-of-the-art ceria/zirconia, and generally offer improved capacity even after exposure to high temperatures.

Three-way catalyst

A novel catalyst comprising a Pt--M alloy wherein M is one or more metals selected from the transition metal elements or from Groups IIIA or IVA of the Periodic Table in 'Handbook of Chemistry and Physics' 64th Edition, CRC Press, and Y wherein Y is a bronze forming element or an oxide thereof, characterised in that the Pt--M alloy is in intimate contact with Y, and provided that M is not Ru if Y is WO.sub.3 is disclosed and which may be used as a poison tolerant catalyst for use in fuel cells, specifically as the anode of a PEM fuel cell.

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Reading, United Kingdom

Timothy Ian Hyde