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Pt/SnO2-based CO-oxidation catalysts for long-life closed-cycle CO2 lasersNoble-metal/tin-oxide based catalysts such as Pt/SnO2 have been shown to be good catalysts for the efficient oxidation of CO at or near room temperature. These catalysts require a reductive pretreatment and traces of hydrogen or water to exhibit their full activity. Addition of Palladium enhances the activity of these catalysts with about 15 to 20 percent Pt, 4 percent Pd, and the balance SnO2 being an optimum composition. Unfortunately, these catalysts presently exhibit significant decay due in part to CO2 retention, probably as a bicarbonate. Research on minimizing the decay in activity of these catalysts is currently in progress. A proposed mechanism of CO oxidation on Pt/SnO2-based catalysts has been developed and is discussed.
Document ID
19900015273
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schryer, David R. (NASA Langley Research Center Hampton, VA., United States)
Upchurch, Billy T. (NASA Langley Research Center Hampton, VA., United States)
Hess, Robert V. (NASA Langley Research Center Hampton, VA., United States)
Wood, George M. (NASA Langley Research Center Hampton, VA., United States)
Sidney, Barry D. (Science and Technology Corp. Hampton, VA., United States)
Miller, Irvin M. (Science and Technology Corp. Hampton, VA., United States)
Brown, Kenneth G. (Old Dominion Univ. Norfolk, VA., United States)
Vannorman, John D. (Old Dominion Univ. Norfolk, VA., United States)
Schryer, Jacqueline (Old Dominion Univ. Norfolk, VA., United States)
Brown, David R. (Old Dominion Univ. Norfolk, VA., United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Low-Temperature CO-Oxidation Catalysts for Long-Life CO2 Lasers
Subject Category
Lasers And Masers
Accession Number
90N24589
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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