Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 58: Issue 3
Improved Iterative Version of the Coats-Redfern Method to Evaluate Non-Isothermal Kinetic Parameters
Authors:
E. Urbanovici LACECA Research Centre, Str Siret Nr. 95 78308 Bucharest Romania Siret Nr. 95 78308 Bucharest Romania

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C. Popescu LACECA Research Centre, Str Siret Nr. 95 78308 Bucharest Romania Siret Nr. 95 78308 Bucharest Romania

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E. Segal University of Bucharest Department of Physical Chemistry, Faculty of Chemistry Bd. Elisabeta 4–12 Bucharest Romania Bd. Elisabeta 4–12 Bucharest Romania

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Pages:
683–700
Online Publication Date:
03 Nov 2004
Publication Date:
25 Dec 1999
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010125132669
Keywords:
evaluation of kinetic parameters; F test; improved Coats-Redfern method; linear regression; non-isothermal kinetics
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Abstract  

An improved version of the Coats-Redfern method of evaluating non-isothermal kinetic parameters is presented. The Coats-Redfern approximation of the temperature integral is replaced by a third-degree rational approximation, which is much more accurate. The kinetic parameters are evaluated iteratively by linear regression and, besides the correlation coefficient, the F test is suggested as a supplementary statistical criterion for selecting the most probable mechanism function. For applications, both non-isothermal data obtained by theoretical simulation and experimental data taken from the literature for the non-isothermal dehydration of Mg(OH)2 have been processed.

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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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