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Formation of Complex Oxides in the W-O_2 System at Temperatures from 2000 to 2500 K and a Pressure of 10~5 Pa

机译:2000-2500 K温度和10〜5 Pa压力下W-O_2系统中复合氧化物的形成

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摘要

We examine the main processes that lead to the formation of (WO_3)_n (n = 2-5) complex tungsten oxides at T= 2000-2500 K and p = 10~5 Pa. Our results demonstrate that the (WO_3)_n oxides form not only through WO_3) polymerization and WO_3) disproportionation but also presumably through tungsten oxidation or reactions of the oxides WO, WO_2, and WO_3 with each other. We show that WO has a dual nature, participating in both (WO_3)_n formation and decomposition. We determine the (WO_3)_n concentrations and interpret the decrease in total (WO_3)_n concentration with increasing temperature and the increase in W_2O_6 concentration relative to the other (WO_3)_n oxides.
机译:我们研究了导致形成(WO_3)_n(n = 2-5)复杂氧化钨的主要过程,温度为T = 2000-2500 K和p = 10〜5 Pa。我们的结果表明,(WO_3)_n氧化物不仅通过WO_3)聚合和WO_3)歧化而形成,而且大概通过钨氧化或氧化物WO,WO_2和WO_3彼此反应形成。我们证明了WO具有双重性质,同时参与(WO_3)_n的形成和分解。我们确定(WO_3)_n浓度,并解释总(WO_3)_n浓度随温度升高而降低,以及W_2O_6浓度相对于其他(WO_3)_n氧化物的增加。

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  • 来源
    《Inorganic materials》 |2012年第11期|1115-1119|共5页
  • 作者单位

    Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333 Russia;

    Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333 Russia;

    Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333 Russia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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