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Controlled Rate Thermal analysis of sepiolite

Frost, Ray L., Kristof, Janos, & Horvath, Erzsebet (2009) Controlled Rate Thermal analysis of sepiolite. Journal of Thermal Analysis and Calorimetry, 98(3), pp. 749-755.

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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.

Impact and interest:

3 citations in Scopus
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10 citations in Web of Science®

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246 since deposited on 18 Dec 2009
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ID Code: 29364
Item Type: Journal Article
Keywords: attapulgite, sepiolite, palygorskites, thermal analysis, CRTA, thermogravimetry
DOI: 10.1007/s10973-009-0201-6
ISSN: 1388-6150
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2009 Akadémiai Kiadó
Deposited On: 18 Dec 2009 11:40
Last Modified: 11 Aug 2011 01:19

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