Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 63: Issue 2
Critical Analysis of the Isoconversional Methods for Evaluating the Activation Energy. II. The activation energy obtained from isothermal data corresponding to two successive reactions
Authors:
P Budrugeac ICPE – Research and Development Institute for Electrical Engineering Splaiul Unirii 313, Sector 3 74204 Bucharest Romania Splaiul Unirii 313, Sector 3 74204 Bucharest Romania

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D. Homentcovschi Institute of Applied Mathematics of the Romanian Academy P.O. Box 1-24 70700 Bucharest Romania P.O. Box 1-24 70700 Bucharest Romania

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

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Pages:
465–469
Online Publication Date:
16 Aug 2006
Publication Date:
01 Feb 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010100712853
Keywords:
isoconversional methods; kinetics
Restricted access

Abstract  

An analysis is presented of the consequences of the use of a one term equation containing apparent activation parameters, instead of the true rate equation to describe two successive decomposition reactions undergone by a solid compound. It is demonstrated that the apparent activation energy, obtained by means of isoconversional differential and integral methods, varies with the conversion degree for a relatively narrow temperature range and with temperature at a given value of the conversion degree. The activation energy values obtained with the isoconversional differential method are higher than the corresponding values obtained with the isoconversional integral method.

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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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