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Kinetics of the thermal oxidation of Fe(2+) in talc

  • Mineralogy, Geology and Archaeology
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Abstract

The thermally induced oxidation of Fe2+ in talc has been investigated by Mössbauer spectroscopy. The heating temperature range of the samples was from 600°C to 750°C with variable times of treatment going from 6 hours up to 192 hours. The obtained isothermals could be well fitted by a first order kinetic model. The activation energy deduced from an Arrhenius plot is 178 kJ/mol.

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References

  1. P. P. Budmikov and A. M. Ginstling: Principles of Solid State Chemistry (Maclaren and Sons Ltd., London, 1968).

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Authors and Affiliations

  1. Departamento de Química, Universidade Federal de Minas Gerais, 31270, Belo Horizonte, Brazil

    M. F. de Jesus Filho, M. A. Conçalves & J. C. Bosch Neto

  2. Departamento de Física e Química, Universidade Federal do Espírito Santo, 29069, Vitória, Brazil

    V. K. Garg

Authors
  1. M. F. de Jesus Filho
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  2. M. A. Conçalves
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  3. J. C. Bosch Neto
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  4. V. K. Garg
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de Jesus Filho, M.F., Conçalves, M.A., Bosch Neto, J.C. et al. Kinetics of the thermal oxidation of Fe(2+) in talc. Hyperfine Interact 70, 961–964 (1992). https://doi.org/10.1007/BF02397487

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  • DOI: https://doi.org/10.1007/BF02397487

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