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Performance Characteristics of Low-Temperature Co Oxidation Catalysts

Published online by Cambridge University Press:  15 February 2011

Gar B. Hoflund ,
Steven D. Gardner ,
David R. Schryer ,
Billy T. Upchurch ,
Jacqueline Schryer  and
Erik J. Kielin
Gar B. Hoflund
Affiliation:
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611
Steven D. Gardner
Affiliation:
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611
David R. Schryer
Affiliation:
NASA Langley Research Center, Hampton, VA 23665
Billy T. Upchurch
Affiliation:
NASA Langley Research Center, Hampton, VA 23665
Jacqueline Schryer
Affiliation:
NASA Langley Research Center, Hampton, VA 23665
Erik J. Kielin
Affiliation:
NASA Langley Research Center, Hampton, VA 23665
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Abstract

A series of Au/MnOx catalysts with the Au content ranging from 0 to 10 at%, a 19.5 wt% Pt/SnOx catalyst and a commercially available 2 wt% Pt/SnOx catalyst have been examined for activity toward low-temperature CO oxidation. A 1 atm, 10 sccm stoichiometric mixture of CO (1 vol.%) and O2 in He were reacted at 55°C over 100 mg of each catalyst for time periods as long as 20,000 min. Under these conditions a 10 at% Au/MnOx catalyst exhibits the highest activity and the lowest decay. Outgassing experiments indicate that CO2 retention is primarily responsible for the activity decay of the Pt/SnOx catalysts and that the 10 at% Au/MnOx catalyst is not significantly affected by this process.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 368: Symposium T – Synthesis and Properties of Advanced Catalytic Materials , 1994 , 139
Copyright
Copyright © Materials Research Society 1995

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References

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