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Mechanically Alloyed Nickel-Zirconium as a Heterogeneous Catalyst and a Catalyst Precursor

Published online by Cambridge University Press:  10 February 2011

W. E. Brower Jr ,
A. J. Montes ,
K. A. Pradlow ,
H. Bakker ,
A. C. Moleman  and
H. Yang
W. E. Brower Jr
Affiliation:
Department of Mechanical and Industrial Engineering, Marquette University, Milwaukee, Wisconsin 53233, USA
A. J. Montes
Affiliation:
Department of Mechanical and Industrial Engineering, Marquette University, Milwaukee, Wisconsin 53233, USA
K. A. Pradlow
Affiliation:
Department of Mechanical and Industrial Engineering, Marquette University, Milwaukee, Wisconsin 53233, USA
H. Bakker
Affiliation:
Van der Waals-Zeeman Laboratorium, University of Amsterdam, Valckenierstraat 65, NL-1018 XE, Amsterdam, The Netherlands
A. C. Moleman
Affiliation:
Van der Waals-Zeeman Laboratorium, University of Amsterdam, Valckenierstraat 65, NL-1018 XE, Amsterdam, The Netherlands
H. Yang
Affiliation:
Van der Waals-Zeeman Laboratorium, University of Amsterdam, Valckenierstraat 65, NL-1018 XE, Amsterdam, The Netherlands
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Abstract

NiZr powders produced by mechanical alloying become active NO decomposition catalysts after an activation period in reaction conditions. Although the initially glassy structure exhibits a high activity, the NiZr powder becomes temporarily inactive. After about 10 hours in reaction conditions at 673 K, the powder again becomes active with a lower, but still substantial turnover frequency for NO decomposition. Oxygen produced by the reaction appears to be consumed by the catalyst during this second period of activity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 497: Symposium Z – Recent Advances in Catalytic Materials , 1997 , 93
Copyright
Copyright © Materials Research Society 1998

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References

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