Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 59: Issue 3
The Effects of γ-Irradiation on the Electrokinetic and Thermal Behaviour of Zirconium Hydroxide
Authors:
S. Musić Rudjer Bošković Institute P. O. Box 1016 10001 Zagreb Croatia P. O. Box 1016 10001 Zagreb Croatia

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G. Štefanić Rudjer Bošković Institute P. O. Box 1016 10001 Zagreb Croatia P. O. Box 1016 10001 Zagreb Croatia

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N. Vdović Rudjer Bošković Institute P. O. Box 1016 10001 Zagreb Croatia P. O. Box 1016 10001 Zagreb Croatia

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A. Sekulić Rudjer Bošković Institute P. O. Box 1016 10001 Zagreb Croatia P. O. Box 1016 10001 Zagreb Croatia

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Pages:
837–846
Online Publication Date:
02 Nov 2004
Publication Date:
01 Mar 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010166123511
Restricted access

Abstract  

Zirconium hydroxide particles produced by rapid precipitation at pH 10.4, 7 or 2 were subjected toγ-irradiation up to a final dose of 20 MGy. The effects of the γ-irradiation were examined by X-ray powder diffraction, laser Raman spectroscopy, differential scanning calorimetry and microelectrophoretic measurements. It was found that γ-irradiation had no influence on the behaviour of zirconium hydroxide during calcination and subsequent cooling. The results of microelectrophoretic measurements showed that γ-irradiation influences the surface properties of zirconium hydroxide as a function of the precipitation pH. Zirconium hydroxide precipitated at pH 2 proved to be the most susceptible to γ-irradiation, while the sameγ-irradiation had very little (if any) effect on the surface properties of zirconium hydroxide precipitated at pH 10.5. After γ-irradiation, the electrophoretic mobility of zirconium hydroxide precipitated at pH 2 was increased at both low and high pH, thereby indicating an increase in its adsorption capacity. The analogy observed between the pH-dependence of the effects of γ-irradiation on the electrokinetic behaviour of zirconium hydroxide and the influence of ball-milling on the thermal behaviour of zirconium hydroxide [8] suggested that the susceptibility of amorphous zirconium hydroxide increases with decrease of the precipitation pH.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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