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Comparison of Nanocrystalline and Polycrystalline Oxide Supports for Catalytic Oxidation of Methane

Published online by Cambridge University Press:  10 February 2011

Horst H. Hahn ,
Heiko Hesemann ,
William S. Epling  and
Gar B. Hoflund
Horst H. Hahn
Affiliation:
Darmstadt University of Technology, FB 21-Materials Science Department, FG Thin Films, Petersenstr. 23, 64287 Darmstadt, Germany
Heiko Hesemann
Affiliation:
Darmstadt University of Technology, FB 21-Materials Science Department, FG Thin Films, Petersenstr. 23, 64287 Darmstadt, Germany
William S. Epling
Affiliation:
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA, fax: 001–352–392–9513
Gar B. Hoflund
Affiliation:
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA, fax: 001–352–392–9513
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Abstract

Nanocrystalline and polycrystalline ZrO2, CeO2 and Mn3O4 without and with 5 wt% Pd have been tested for methane oxidation. The nanocrystalline catalysts perform better than the polycrystalline catalysts on a weight basis. Nanocrystalline (n)-CeO2 performs much better than n-ZrO2, and both perform much better than polycrystalline (P)-CeO2 and P-ZrO2. 5 wt% Pd/n-ZrO2 is the best catalyst tested, but 5 wt% Pd/n-CeO2 performs nearly as well. A 20 wt% Ag/p-ZrO2 and a 20 wt% Ag/n-ZrO2 catalyst were also tested. The Ag yields a significant improvement over the bare supports, but not as much so as Pd.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 497: Symposium Z – Recent Advances in Catalytic Materials , 1997 , 35
Copyright
Copyright © Materials Research Society 1998

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References

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