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Stabilized tin-oxide-based oxidation/reduction catalystsThe invention described herein involves a novel approach to the production of oxidation/reduction catalytic systems. The present invention serves to stabilize the tin oxide reducible metal-oxide coating by co-incorporating at least another metal-oxide species, such as zirconium. In one embodiment, a third metal-oxide species is incorporated, selected from the group consisting of cerium, lanthanum, hafnium, and ruthenium. The incorporation of the additional metal oxide components serves to stabilize the active tin-oxide layer in the catalytic process during high-temperature operation in a reducing environment (e.g., automobile exhaust). Moreover, the additional metal oxides are active components due to their oxygen-retention capabilities. Together, these features provide a mechanism to extend the range of operation of the tin-oxide-based catalyst system for automotive applications, while maintaining the existing advantages.
Document ID
20080025188
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Jordan, Jeffrey D.
Schryer, David R.
Davis, Patricia P.
Leighty, Bradley D.
Watkins, Anthony Neal
Schryer, Jacqueline L.
Oglesby, Donald M.
Gulati, Suresh T.
Summers, Jerry C.
Date Acquired
August 24, 2013
Publication Date
June 24, 2008
Subject Category
Inorganic, Organic And Physical Chemistry
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-7,390,768
Patent Application
US-Patent-Appl-SN-10/056,845

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