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Some problems concerning the evaluation of non-isothermal kinetic parameters

Solid-gas decompositions from thermogravimetric data

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Abstract

The validity of isoconversional methods used to evaluate the activation energy is discussed. The authors have shown that the Flynn-Wall-Ozawa and Friedman methods give results that agree with each other only if the activation energy does not change with the degree of conversion. A criterion for the reaction mechanism as expressed by the differential conversion function is suggested too.

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Authors and Affiliations

  1. EUROTEST-S.A., Splaiul Unirii 313, Sector 3, 73204, Bucharest

    P. Budrugeac

  2. ‘I. G. Murgulescu’ Institute of Physical Chemistry of the Romanian Academy, Splaiul Independentei 202, 77208, Bucharest

    Alice Luminita Petre

  3. Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bd. Republicii, Nr. 13, Bucharest, Romania

    E. Segal

Authors
  1. P. Budrugeac
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  2. Alice Luminita Petre
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  3. E. Segal
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Budrugeac, P., Petre, A.L. & Segal, E. Some problems concerning the evaluation of non-isothermal kinetic parameters. Journal of Thermal Analysis 47, 123–134 (1996). https://doi.org/10.1007/BF01982692

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  • DOI: https://doi.org/10.1007/BF01982692

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