Controlled rate thermal analysis of nontronite

Ding, Zhe & Frost, Ray L. (2002) Controlled rate thermal analysis of nontronite. Thermochimica Acta, 389(1-2), pp. 185-193.

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The thermal decomposition of a series of nontronites and a ferruginous smectite has been studied using a combination of high-resolution thermogravimetric analysis with a controlled heating rate and the mass spectrometry of evolved water vapour. The temperature-mass spectrum curve follows the differential thermogravimetric curve with precision, thus providing a second means of calculating the percentage weight loss. Three dehydration steps were observed in the CRTA experiment at around 86, 117 and 245 degrees Celsius depending on the nontronite sample. Two overlapping dehydroxylation steps were observed at approximately 350 and 400 degrees Celsius with a weight loss ratio of 1:2. A comparison is made between the between the results obtained from the dynamic differential thermogravimetric experiment and the controlled rate thermal analysis experiment.

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18 citations in Scopus
17 citations in Web of Science®
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544 since deposited on 13 Apr 2005
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ID Code: 1006
Item Type: Journal Article
Refereed: Yes
Keywords: nontronite, ferruginous smectite, controlled rate thermal analysis, differential thermogravimetric analysis
DOI: 10.1016/S0040-6031(02)00059-X
ISSN: 0040-6031
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2002 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 13 Apr 2005 00:00
Last Modified: 09 Jun 2010 12:24

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