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Some considerations regarding the determination of the activation energy of solid-state reactions from a series of isothermal data

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Abstract

It has been demonstrated that the kinetic data on solid-state reactions show a good fitting to the expressiong(α)=kt, regardless of the nature of theg(α) function previously assumed for performance of the calculations. Moreover, the activation energy value obtained from the Arrhenius law is quite independent of the kinetic function assumed.

Zusammenfassung

Es wird gezeigt, daß die kinetischen, Daten von Festkörperreaktionen gut dem Ausdruckg(α)=kt entsprechen, ungeachtet der Natur der zur Ausführung der Berechnungen angenommen Funktiong(α). Darüber hinaus ist der nach dem Arrhenius'schen Gesetz erhaltene Wert für die Aktivierungsenergie ganz unabhängig von der angenommenen kinetischen Funktion.

Резюме

Показано, что данные кинетики твердотельлых реакций хорощо описываются быражениемg(α)=kt, независимо от характера характера функцииg(α), ранее учитываемой при проведении вычислений. Кроме того, значение знергии активации, полученной из уравненил Аррениуса, польностью независимо от принимаемой кинетической функции.

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Criado, J.M., Gonzalez, M., Ortega, A. et al. Some considerations regarding the determination of the activation energy of solid-state reactions from a series of isothermal data. J. Thermal Anal. 29, 243–250 (1984). https://doi.org/10.1007/BF02720058

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  • DOI: https://doi.org/10.1007/BF02720058

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