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A Dynamic High Temperature XRPD Study of the Calcination of Zirconium Hydroxide

Published online by Cambridge University Press:  10 January 2013

G. T. Mamott ,
P. Barnes ,
S. E. Tarling ,
S. L. Jones  and
C. J. Norman
G. T. Mamott
Affiliation:
Industrial Materials Group, Department of Crystallography, Birkbeck College, Malet Street, London WC1E 7HX, U.K.
P. Barnes
Affiliation:
Industrial Materials Group, Department of Crystallography, Birkbeck College, Malet Street, London WC1E 7HX, U.K.
S. E. Tarling
Affiliation:
Industrial Materials Group, Department of Crystallography, Birkbeck College, Malet Street, London WC1E 7HX, U.K.
S. L. Jones
Affiliation:
Alcan Chemicals Ltd., Chalfont Park, Gerrards Cross, Bucks SL9 0QB, U.K.
C. J. Norman
Affiliation:
Alcan Chemicals Ltd., Chalfont Park, Gerrards Cross, Bucks SL9 0QB, U.K.
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Abstract

Structural and chemical changes in materials can be dynamically observed by using time resolved X-ray Powder Diffraction (XRPD) to collect patterns as these events happen. During calcination of amorphous zirconium hydroxide, Zr(OH)4, and its crystallisation to a metastable tetragonal form of zirconia, ZrO2, patterns have been collected at 10°C temperature intervals during a heating sequence to 500°C. These patterns show both the onset of ordering within the amorphous starting material and the progress of its conversion into crystalline zirconia. Events are recorded within the pattern in the form of peak growth and reduction in amorphous component of the pattern with increasing temperature.

Type
Research Article
Information
Powder Diffraction , Volume 3 , Issue 4 , December 1988 , pp. 234 - 239
Copyright
Copyright © Cambridge University Press 1988

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