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Exhaust system having a gold-platinum group metal catalyst

United States Patent

December 6, 2011
View the Complete Patent at the US Patent & Trademark Office
A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.
Ragle; Christie Susan (Havana, IL), Silver; Ronald G. (Peoria, IL), Zemskova; Svetlana Mikhailovna (Edelstein, IL), Eckstein; Colleen J. (Metamora, IL)
Caterpillar Inc. (Peoria, IL)
12/ 318,002
December 19, 2008
GOVERNMENT RIGHTS This invention was made with Government support under the terms of the Oxidation CRADA, Contract No. PNNL230 awarded by the Department of Energy. The Government may have certain rights in this invention.