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Investigation on The Thermal Properties of Fe2O(SO4)2. Part I

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Abstract

The data on the thermal decomposition of FeSO4⋅H2O upon various regimes of heating and gaseous environment prove the formation of intermediate products of the types Fe2O(SO4)2 and FeOHSO4, their stability and amount being determined mainly by temperature and oxygen-reduction potential.

This communication aims at presenting results on the synthesis and characterization of Fe2O(SO4)2. The synthesis was carried out using a laboratory thermal equipment operating under isothermal conditions in the temperature range 713–813 K in a gaseous environment either poor in oxygen or containing 100% oxygen. The experimental conditions under which Fe2O(SO4)2 is stable are established. The effect of three basic parameters on the synthesis of Fe2O(SO4)2 is clarified: the oxygen partial pressure, the ratio PH2O/PO2 and the temperature and the mode of heating. Mössbauer spectroscopy and X-ray diffraction data for Fe2O(SO4)2 are presented.

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Authors and Affiliations

  1. Central Laboratory of Mineralogy and Cristallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113, Sofia, Bulgaria

    V. Petkova

  2. University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Str., 1756, Sofia, Bulgaria

    Y. Pelovski

Authors
  1. V. Petkova
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  2. Y. Pelovski
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Petkova, V., Pelovski, Y. Investigation on The Thermal Properties of Fe2O(SO4)2. Part I. Journal of Thermal Analysis and Calorimetry 64, 1025–1035 (2001). https://doi.org/10.1023/A:1011547702392

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  • DOI: https://doi.org/10.1023/A:1011547702392

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