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Catalysts for lean burn engine exhaust abatement

United States Patent

February 4, 2003
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
The present invention provides a process for catalytically reducing nitrogen oxides in an exhaust gas stream containing nitrogen oxides and a reductant material by contacting the gas stream under conditions effective to catalytically reduce the nitrogen oxides with a catalyst comprising a aluminum-silicate type material and a minor amount of a metal, the catalyst characterized as having sufficient catalytic activity so as to reduce the nitrogen oxides by at least 60 percent under temperatures within the range of from about C. to about C.
Ott; Kevin C. (Los Alamos, NM), Clark; Noline C. (Jemez Springs, NM), Paffett; Mark T. (Los Alamos, NM)
The Regents of the University of California (Los Alamos, NM)
09/ 699,162
October 27, 2000
FIELD OF THE INVENTION The present invention relates to catalysts for lean burn engine exhaust abatement and to processes for preparation of such catalysts. This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.