Thermal decomposition of Fe2(SO4)3: Demonstration of Fe2O3 polymorphism |
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| Authors: | R Zboril M Mashlan V Papaefthymiou G Hadjipanayis |
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| Institution: | (1) Department of Inorganic and Physical Chemistry, Palacky University, Svobody 26, Olomouc, 771 46, Czech Republic;(2) Department of Experimental Physics, Palacky University, Svobody 26, Olomouc, 771 46, Czech Republic;(3) Department of Physics, University of Ioannina, 45110 Ioannina, Greece;(4) Department of Physics and Astronomy, University of Delaware Newark, 19716 Delaware, USA |
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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 ( ), bixbyite ( ), spinel ( ) and orthorhombic ( ) 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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