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Products and kinetics of non-isothermal decomposition of vanadium(IV) oxide compounds

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Abstract

The kinetics of dehydration and decomposition of VOSO4·2H2O, VOSO4 and VOSeO3·H2O was studied under non-isothermal heating on a derivatograph. The stages and products of the thermal decomposition were determined. It was proved that VOSO4·2H2O decomposes to V2O5 while VOSeO3·H2O − to V2O4. A number of kinetic models and calculation procedures were used to determine the values of the kinetic parameters characterizing the process. The parameters calculated were compared and analyzed. IR-spectra of the initial substances and the solid residue after decomposition are presented.

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Authors and Affiliations

  1. Department of Physical Chemistry, Assen Zlatarov University, 8010, Bourgas, Bulgaria

    L. T. Vlaev, V. G. Georgieva & S. D. Genieva

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  1. L. T. Vlaev
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  2. V. G. Georgieva
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  3. S. D. Genieva
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Correspondence to L. T. Vlaev.

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Vlaev, L.T., Georgieva, V.G. & Genieva, S.D. Products and kinetics of non-isothermal decomposition of vanadium(IV) oxide compounds. J Therm Anal Calorim 88, 805–812 (2007). https://doi.org/10.1007/s10973-005-7149-y

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