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Microstructural Studies of the WO3/TiO2 Monolayer Catalyst System Using High Resolution Electron Microscopy

Published online by Cambridge University Press:  15 February 2011

A. Burrows ,
C. J. Kiely ,
R. W. Joyner ,
H. Knözinger  and
F. Lange
A. Burrows
Affiliation:
Department of Materials Science and Engineering, The University of Liverpool P.O. Box 147, Liverpool L69
C. J. Kiely
Affiliation:
Department of Materials Science and Engineering, The University of Liverpool P.O. Box 147, Liverpool L69
R. W. Joyner
Affiliation:
Leverhulme Centre for Innovative Catalysis, The University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UK
H. Knözinger
Affiliation:
Institut für Physikalische Chemie, Universität München, 80333 München, Germany
F. Lange
Affiliation:
Institut für Physikalische Chemie, Universität München, 80333 München, Germany
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Abstract

We have characterised the WO3T'iO2 (anatase) catalyst system using High Resolution Electron Microscopy. We will show that the overlayer preserves the surface roughness of titania and consists of 2D-hexagonal clusters that have a definite orientation relationship with the support. The contrast observed from these clusters is discussed in terms of existing structural models. A comparison between traditional chemical methods of preparation and simple mechanical mixing is made to assess the effectiveness of the latter to disperse WO3.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 344: Symposium I – Materials and Processes for Environmental Protection , 1994 , 33
Copyright
Copyright © Materials Research Society 1994

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