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Errors in the determination of activation energies of solid-state reactions by the Piloyan method, as a function of the reaction mechanism

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Abstract

The errors in the activation energies of solid-state reactions determined with the Piloyan method are more larger than those previously assumed in the literature. On the other hand, the errors in the kinetic parameters are strongly dependent on the kinetic law obeyed by the reaction. A theoretical explanation of this behaviour is given.

Zusammenfassung

Die Fehler der nach der Piloyan-Methode bestimmten Aktivierungsenergien von Festkörperreaktionen sind grö\er als bisher in der Literatur angenommen und stark abhÄngig von der Reaktionsordnung. Eine theoretische ErklÄrung dieses Verhaltens wird gegeben.

РЕжУМЕ

ОтМЕЧАЕтсь, ЧтО ОшИБк И ОпРЕДЕлЕНИь ЁНЕРгИ И АктИВАцИИ тВЕРДОтЕл ьНых РЕАкцИИ пО МЕтОДУ пИлОьНА жНА ЧИтЕльНО БОльшИЕ пО с РАВНЕНИУ с тЕМ, ЧтО РАНЕЕ пРЕДпОл АгАлОсь В лИтЕРАтУРЕ. с ДРУгОИ стОРОНы, пОкАжАНО, ЧтО ОшИькИ ОпРЕДЕлЕНИь кИНЕтИЧ ЕскИх пАРАМЕтРОВ В жНАЧИтЕльНОИ стЕпЕ НИ жАВИсИМы От жАкОНА кИНЕтИкИ, ОпИсыВАУЩЕгО РЕАкцИ У. пРИВЕДЕНО тЕОРЕтИЧЕ скОЕ ОБЩьсНЕНИЕ тАкО гО пОВЕДЕНИь.

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Criado, J.M., Ortega, A. Errors in the determination of activation energies of solid-state reactions by the Piloyan method, as a function of the reaction mechanism. Journal of Thermal Analysis 29, 1075–1082 (1984). https://doi.org/10.1007/BF02188860

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  • DOI: https://doi.org/10.1007/BF02188860

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