Abstract
We examine the main processes that lead to the formation of (WO3) n (n = 2–5) complex tungsten oxides at T = 2000–2500 K and p = 105 Pa. Our results demonstrate that the (WO3) n oxides form not only through WO3 polymerization and WO2 disproportionation but also presumably through tungsten oxidation or reactions of the oxides WO, WO2, and WO3 with each other. We show that WO has a dual nature, participating in both (WO3) n formation and decomposition. We determine the (WO3) n concentrations and interpret the decrease in total (WO3) n concentration with increasing temperature and the increase in W2O6 concentration relative to the other (WO3) n oxides.
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Original Russian Text © D.V. Kostomarov, Kh.S. Bagdasarov, E.V. Antonov, 2012, published in Neorganicheskie Materialy, 2012, Vol. 48, No. 11, pp. 1247–1251.
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Kostomarov, D.V., Bagdasarov, K.S. & Antonov, E.V. Formation of complex oxides in the W-O2 system at temperatures from 2000 to 2500 K and a pressure of 105 Pa. Inorg Mater 48, 1115–1119 (2012). https://doi.org/10.1134/S0020168512110040
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DOI: https://doi.org/10.1134/S0020168512110040