Authors:
S. Diyani Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3 Rue Alfred Werner, F-68093 Mulhouse Cedex, France

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S. Walter Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3 Rue Alfred Werner, F-68093 Mulhouse Cedex, France

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A. Hadj Mebarek Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3 Rue Alfred Werner, F-68093 Mulhouse Cedex, France

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Abstract

Solid state purification generally requires efficient diffusion mechanisms in order to allow impurity migration towards the sample surface, from which it can be removed by a suitable mean. Since solid state diffusion just becomes efficient near the melting point, generally high working temperatures are required, resulting in expensive, energy consuming processes. The addition of small amounts of a common liquid solvent of both matrix and impurity results, even at low temperatures, in effective diffusion mechanisms the thermodynamical aspects of which are discussed in this work. Thermal cycling enhances the efficiency of the described process. Its concerns industrial and analytical applications.

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  • 2 Matsen, F. A. Beach, J. Y. 1941 J. Am. Chem. Soc. 63 34703470. .

  • 3 Barrett, W. T. Wallace, W. E. 1954 J. Am. Chem. Soc. 76 366366. .

  • 4 Nguyen, B. C., Bull. Soc. Franç. Minér. Crist., (1966) 229.

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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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