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Influence of the particle size distribution on the CRTA curves for the solid-state reactions of interface shrinkage type

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Abstract

The kinetic curves at infinite temperature for the solid-state reactions of the interface shrinkage type were drawn theoretically by taking account the particle size distribution in the sample mixture. The CRTA curves for the reactions with the particle size distribution can be drawn by utilizing the universal kinetic curves at infinite temperature. The proper kinetic treatment for the CRTA curves with the particle size distribution is discussed in connection with the property of the kinetic equation with respect to the particle size distribution. The present kinetic consideration is taken as a simulation for the reactions with a certain distribution in α among the reactant particles, produced preferably by the mass and heat transfer phenomena during the thermoanalytical measurements. The merit of the rate jump method by a single cyclic CRTA curve is also discussed on the basis of the present results.

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Authors and Affiliations

  1. Chemistry Laboratory, Faculty of School Education, Hiroshima University, 1-1-1 Kagamiyama, 739, Higashi-Hiroshima, Japan

    N. Koga

  2. Institute de Ciencia de Materiales, C.S.I.C.-Universidad de Sevilla, Aptdo. 1115, 41071, Sevilla, Spain

    J. M. Criado

Authors
  1. N. Koga
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  2. J. M. Criado
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Koga, N., Criado, J.M. Influence of the particle size distribution on the CRTA curves for the solid-state reactions of interface shrinkage type. Journal of Thermal Analysis 49, 1477–1484 (1997). https://doi.org/10.1007/BF01983706

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