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Determination of kinetic parameters using differential thermal analysis—Application to the decomposition of CaCO3

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Abstract

An analytical method has been developed to determine the kinetic parameters of a chemical reaction involving a substantial enthalpy change using differential thermal analysis (DTA). The theoretical treatment is based on fundamental equations considering the heat balance. The analytical derivation was simplified by carefully choosing the experimental conditions. The method was applied to the decomposition of CaCO3 in argon gas. The activation energy of the decomposition of CaCO3 evaluated using the present approach is in very good agreement with the result obtained from the thermogravimetric analyses (TGA) carried out simultaneously with the DTA measurements. The limitation of the technique includes maintaining the temperature rise of the sample small enough not to significantly affect temperature reading but large enough to ensure accurate measurement of the heat generation.

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Author notes

  1. X. Xiao (Visiting Professor)

    Present address: Division of Theoretical Metallurgy, Royal Institute of Technology, China

Authors and Affiliations

  1. the Department of Ferrous Metallurgy, Northeast University, 110006, Shengyang, China

    X. Xiao (Visiting Professor)

  2. the Division of Theoretical Metallurgy, Royal Institute of Technology, S-100 44, Stockholm, Sweden

    Du Sichen (Associate Professor) & S. Seetharaman (Professor)

  3. the Department of Metallurgical Engineering, University of Utah, 84112, Salt Lake City, UT

    H. Y. Sohn (Professor)

Authors
  1. X. Xiao
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  2. Du Sichen
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  3. S. Seetharaman
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  4. H. Y. Sohn
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Xiao, X., Sichen, D., Seetharaman, S. et al. Determination of kinetic parameters using differential thermal analysis—Application to the decomposition of CaCO3 . Metall Mater Trans B 28, 1157–1164 (1997). https://doi.org/10.1007/s11663-997-0072-9

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  • DOI: https://doi.org/10.1007/s11663-997-0072-9

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