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Thermal decomposition of Fe2(SO4)3: Demonstration of Fe2O3 polymorphism

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Abstract

The mechanism of the thermal decomposition of Fe2(SO4)3 in air has been studied at different temperatures (520-700 °C) using mainly 57Fe Mössbauer spectroscopy. Iron(III) oxides with corundum (α), bixbyite (β), spinel (γ) and orthorhombic (ε) structures were identified as solid products of this conversion. A significant influence of the heating temperature on the decomposition mechanism and on the phase composition of reaction products was found.

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Authors and Affiliations

  1. Department of Inorganic and Physical Chemistry, Palacky University, Svobody 26, Olomouc, 771 46, Czech Republic

    R. Zboril

  2. Department of Experimental Physics, Palacky University, Svobody 26, Olomouc, 771 46, Czech Republic

    M. Mashlan

  3. Department of Physics, University of Ioannina, 45110, Ioannina, Greece

    V. Papaefthymiou

  4. Department of Physics and Astronomy, University of Delaware Newark, 19716, Delaware, USA

    G. Hadjipanayis

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  1. R. Zboril
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  2. M. Mashlan
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  3. V. Papaefthymiou
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  4. G. Hadjipanayis
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Zboril, R., Mashlan, M., Papaefthymiou, V. et al. Thermal decomposition of Fe2(SO4)3: Demonstration of Fe2O3 polymorphism. Journal of Radioanalytical and Nuclear Chemistry 255, 413–417 (2003). https://doi.org/10.1023/A:1022543323651

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