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Simultaneous determination of the activation energy and the reaction kinetic model from the analysis of a single curve obtained by a novel method

CRTA with constant acceleration of the transformation

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Abstract

It has been demonstrated that a single plot of the values of Δlnα1/2/Δln(1-α) (taken from a single α−T curve obtained under a controlled linear increase of the reaction rate) as a function of the corresponding values of Δ(1/T)/Δln(1−α) permits the simultaneous determination of both the activation energy and the kinetic model in accordance with a solid state reaction.

Zusammenfassung

Es konnte gezeigt werden, daß die Darstellung der Werte für Δlnα1/2/Δln(1-α) (ermittelt aus einer einfachen α−T Kurve, die unter einem kontrollierten linearen Anwachsen der Reaktionsgeschwindigkeit aufgenommen wurde) als eine Funktion der entsprechenden Werte für Δ(1/T)/Δln(1−α) eine gleichzeitige Ermittlung von sowohl Aktivierungsenergie als auch des kinetischen Modelles von Feststoffreaktionen ermöglicht.

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Ortega, A., Pérez-Maqueda, L.A. & Criado, J.M. Simultaneous determination of the activation energy and the reaction kinetic model from the analysis of a single curve obtained by a novel method. Journal of Thermal Analysis 42, 551–557 (1994). https://doi.org/10.1007/BF02548535

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  • DOI: https://doi.org/10.1007/BF02548535

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