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About the kinetic equation in the DTA study of the silica gel to cristobalite transformation

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Abstract

The method suggested by Marotta and Buri for performing the kinetic analysis of the silica gel to cristobalite transformation from the DTA trace is criticized. It is shown that this method does not allow determination of the value of the exponentn in the Avrami-Erofeev law. This is in contradiction with the theoretical deduction made by the above authors.

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Authors and Affiliations

  1. Departamento de Quimica Inorgánica, Facultad de Ciencias de la Universidad de Sevilla, Spain

    J. M. Criado

  2. Departamento de Investigaciones Fisicas y Quimicas, Centra Coordinado del C.S.I.C., Sevilla, Spain

    J. M. Criado

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  1. J. M. Criado
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Criado, J.M. About the kinetic equation in the DTA study of the silica gel to cristobalite transformation. Journal of Thermal Analysis 20, 221–224 (1981). https://doi.org/10.1007/BF01913013

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  • DOI: https://doi.org/10.1007/BF01913013

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