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Controlled rate thermal analysis of sepiolite

Controlled rate thermal analysis of sepiolite Controlled rate thermal analysis (CRTA) technology offers better resolution and a more detailed interpretation of the decomposition processes of a clay mineral such as sepiolite via approaching equilibrium conditions of decomposition through the elimination of the slow transfer of heat to the sample as a controlling parameter on the process of decomposition. Constant-rate decomposition processes of non-isothermal nature reveal changes in the sepiolite as the sepiolite is converted to an anhydride. In the dynamic experiment two dehydration steps are observed over the ~20–170 and 170–350 °C temperature range. In the dynamic experiment three dehydroxylation steps are observed over the temperature ranges 201–337, 337–638 and 638–982 °C. The CRTA technology enables the separation of the thermal decomposition steps. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Thermal Analysis and Calorimetry Springer Journals

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References (54)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Akadémiai Kiadó, Budapest, Hungary
Subject
Chemistry; Measurement Science and Instrumentation; Inorganic Chemistry ; Polymer Sciences ; Analytical Chemistry ; Physical Chemistry
ISSN
1388-6150
eISSN
1572-8943
DOI
10.1007/s10973-009-0201-6
Publisher site
See Article on Publisher Site

Abstract

Controlled rate thermal analysis (CRTA) technology offers better resolution and a more detailed interpretation of the decomposition processes of a clay mineral such as sepiolite via approaching equilibrium conditions of decomposition through the elimination of the slow transfer of heat to the sample as a controlling parameter on the process of decomposition. Constant-rate decomposition processes of non-isothermal nature reveal changes in the sepiolite as the sepiolite is converted to an anhydride. In the dynamic experiment two dehydration steps are observed over the ~20–170 and 170–350 °C temperature range. In the dynamic experiment three dehydroxylation steps are observed over the temperature ranges 201–337, 337–638 and 638–982 °C. The CRTA technology enables the separation of the thermal decomposition steps.

Journal

Journal of Thermal Analysis and CalorimetrySpringer Journals

Published: Dec 1, 2009

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