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Thermal Stability of Supported Titania Membranes

Published online by Cambridge University Press:  25 February 2011

Krishnankutty-Nair P. Kumar ,
V. T. Zaspalis ,
F. F. M. De Mul ,
Klaas Keizer  and
Anthonie J. Burggraaf
Krishnankutty-Nair P. Kumar
Affiliation:
Laboratory of Inorganic Chemistry, Materials Science and Catalysis, Faculty of Chemical Technology
V. T. Zaspalis
Affiliation:
Laboratory of Inorganic Chemistry, Materials Science and Catalysis, Faculty of Chemical Technology
F. F. M. De Mul
Affiliation:
Faculty of Applied Physics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
Klaas Keizer
Affiliation:
Laboratory of Inorganic Chemistry, Materials Science and Catalysis, Faculty of Chemical Technology
Anthonie J. Burggraaf
Affiliation:
Laboratory of Inorganic Chemistry, Materials Science and Catalysis, Faculty of Chemical Technology
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Abstract

The beneficial effects of the support constraint on the improved thermal stability of supported titania membranes were studied by following the anatase to rutile phase transformation in supported and unsupported titania membranes. This was studied using Raman spectroscopy and XRD. Supported membranes showed a higher transformation temperature, about 150°C higher, (slower rate of transformation) compared to the unsupported ones. Unsupported membranes showed a slight thickness dependence on the phase transformation temperature, but less significant compared to the difference in phase transformation behaviour between supported and unsupported membranes of similar thicknesses.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 499
Copyright
Copyright © Materials Research Society 1992

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References

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