Johnson Matthey Public Limited Company

Peter Bellham

David Marvell

John Turner

Andrew Francis Chiffey

Lucy Clowes

Thomas Hotchkiss

Sarah Warren

Guy Richard Chandler

Kaneshalingam Arulraj

Alexander De Bruin

Chris Corrigan

A method of forming an inorganic oxide coating on a monolith article to produce a coated monolith article suitable for the treatment of an exhaust gas comprises spraying, as a dry particulate aerosol, inorganic particles and a silicone resin to form a coating layer. The present invention also provides an uncalcined porous monolith article for use in forming a monolith article for the treatment of an exhaust gas. The uncalcined monolith article comprises a dry particulate composition comprising inorganic particles and a silicone resin.

Method of forming an inorganic oxide coating on a monolith article

A vehicular exhaust filter comprising a porous substrate having an inlet face and an outlet face with the porous substrate comprising inlet channels extending from the inlet face and outlet channels extending from the outlet face is disclosed. The inlet channels and the outlet channels are separated by a plurality of filter walls having a porous structure. The vehicular exhaust filter is loaded with a refractory powder having a tapped density before loading of less than 0.10 g/cmand the vehicular exhaust filter has a mass loading of the refractory powder of less than 10 g/l.

Particulate filters

A vehicular exhaust filter () comprising a porous substrate having an inlet face and an outlet face with the porous substrate comprising inlet channels extending from the inlet face and outlet channels extending from the outlet face is disclosed. The inlet channels and the outlet channels are separated by a plurality of filter walls having a porous structure. The vehicular exhaust filter () is loaded with a refractory powder having a tapped density before loading of less than 0.10 g/cmand the vehicular exhaust filter has a mass loading of the refractory powder of less than 10 g/l.

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Royston, United Kingdom

Peter Bellham