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Structural Transformations in Platinum Supported on y-Alumina Studied by X-Ray Absorption Spectroscopy

Published online by Cambridge University Press:  28 February 2011

H. J. Robota ,
M. J. Cohn ,
A. Z. Ringwelski  and
R. A. Eades
H. J. Robota
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
M. J. Cohn
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
A. Z. Ringwelski
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
R. A. Eades
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
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Abstract

Pt particles in a highly dispersed Pt/γ-A12O3 catalyst have been found to undergo ordering following the removal of chemisorbed oxygen with hydrogen at room temperature. The very small Pt particles are found to be disordered following an initial reduction at 500°C. Treating the ordered phase of Pt at 500°C in hydrogen is found to restore the disordered phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 111: Symposium O – Microstructure and Properties of Catalysts , 1987 , 201
Copyright
Copyright © Materials Research Society 1988

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