Kinetic evaluation of non-isothermal thermoanalytical curves in the case of independent thermal reactions

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Abstract

A least squares curve-fitting method was developed for the following thermo-analytical problem: "Find the kinetic parameters and the unknown initial amounts of the reactants from non-isothermal thermoanalytical curves in the case of two or more independent or quasi-independent thermal reactions". From a numerical point of view this problem differs from the non-linear least squares techniques used in other areas of reaction kinetics. The special difficulties which have arisen in such calculations were eliminated by parameter transformations and by separating the linear and non-linear parts of the problem. The method can be applied at any T(t) functions. Thermo-analytical curves differing in temperature program can be evaluated simultaneously.

Original languageEnglish
Pages (from-to)367-376
Number of pages10
JournalThermochimica Acta
Volume28
Issue number2
DOIs
Publication statusPublished - 1979

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Curve fitting
Kinetic parameters
Reaction kinetics
Kinetics
evaluation
curve fitting
kinetics
curves
reaction kinetics
Temperature
temperature
Hot Temperature

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Physical and Theoretical Chemistry

Cite this

Kinetic evaluation of non-isothermal thermoanalytical curves in the case of independent thermal reactions. / Várhegyi, G.

In: Thermochimica Acta, Vol. 28, No. 2, 1979, p. 367-376.

Research output: Contribution to journalArticle

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