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Multi-stage catalyst systems and uses thereof

United States Patent

February 10, 2009
View the Complete Patent at the US Patent & Trademark Office
Catalyst systems and methods provide benefits in reducing the content of nitrogen oxides in a gaseous stream containing nitric oxide (NO), hydrocarbons, carbon monoxide (CO), and oxygen (O.sub.2). The catalyst system comprises an oxidation catalyst comprising a first metal supported on a first inorganic oxide for catalyzing the oxidation of NO to nitrogen dioxide (NO.sub.2), and a reduction catalyst comprising a second metal supported on a second inorganic oxide for catalyzing the reduction of NO.sub.2 to nitrogen (N.sub.2).
Ozkan; Umit S. (Worthington, OH), Holmgreen; Erik M. (Columbus, OH), Yung; Matthew M. (Columbus, OH)
The Ohio State University (Columbus, OH)
11/ 411,993
April 26, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Contract No. DE FC26-02NT4 1610 awarded by the United States Department of Energy. The government has certain fights in the invention.