Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 90: Issue 2
Errors involved in the activation energy calculated by integral methods when the frequency factor depends on the temperature ( A = A0Tm)
Authors:
J. Cai Shanghai Jiao Tong University Biomass Energy Engineering Research Center, School of Agriculture and Biology 2678 Qixin Road Shanghai 201101 P.R. China

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R. Liu Shanghai Jiao Tong University Biomass Energy Engineering Research Center, School of Agriculture and Biology 2678 Qixin Road Shanghai 201101 P.R. China

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Pages:
459–462
Online Publication Date:
26 Feb 2007
Publication Date:
01 Nov 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7926-2
Keywords:
activation energy; frequency factor; integral method; non-isothermal kinetic analysis
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Abstract  

The dependence of the frequency factor on the temperature (A=A0Tm) has been examined and the errors involved in the activation energy calculated from some integral methods without considering such dependence have been estimated. Investigated integral methods are the Coats-Redfern method, the Gorbachev-Lee-Beck method, the Wanjun-Yuwen method and the Junmeng-Fusheng method. The results have shown that the error in the determination of the activation energy calculated ignoring the dependence of the frequency factor on the temperature can be rather large and it is dependent on x=E/RT and the exponent m.

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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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