Johnson Matthey Public Limited Company

Jorg Werner Muench

Ralf Dotzel

Rainer Leppelt

Juergen Bauer

Gudmund Smedler

Joerg Walter Jodlauk

Kaneshalingam Arulraj

Alexandra Tsami Goodwin

A filter incorporates a catalyst for the Selective Catalytic Reduction (SCR) of NOgases and removal of particulate matter from the exhaust gas of a lean burn combustion engine, wherein the catalyst includes a vanadate component having an alkaline earth metal, a transition metal, a rare earth metal, or combinations thereof. The vanadate component may be iron vanadate. The filter includes a supported vanadate component disposed on a wall-flow filter. The method of making the filter includes applying an aqueous mixture of the supported vanadate component as a washcoat on the wall-flow filter or extruding a composition containing the supported vanadate component. The method of treating exhaust gases from an engine includes contacting the exhaust gas with the catalyst including the vanadate component.

Selective catalytic reduction wall flow filter incorporating a vanadate

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Lichtenfels, Germany

Jorg Werner Muench