Thermally induced transformations in nanostructured molybdenum-vanadium oxides synthesized by a solvothermal method

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• 作者：T. V. Sviridova ; A. I. Kokorin ; A. A. Antonova…
• 关键词：mixed oxides ; vanadium ; molybdenum ; solvothermal synthesis ; EPR ; X ; ray diffraction ; IR spectroscopy ; electron microscopy
• 刊名：Russian Journal of Physical Chemistry B, Focus on Physics
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：9
• 期：1
• 页码：36-42
• 全文大小：888 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1990-7923

文摘

The phase composition and morphology of xMoO3: (1 ?x)V2O5 (x = 0.25-.75) mixed oxides synthesized by a solvothermal method and heat-treated at 400°C have been investigated. It has been demonstrated by EPR spectroscopy that this heat treatment changes the local concentration of paramagnetic V(IV) centers in the samples. The thermally induced changes in the morphology and phase composition of the oxides have been investigated by IR spectroscopy, X-ray diffraction, and electron microscopy. A probable effect of these factors on the catalytic properties of the nanostructured molybdenum-vanadium oxides obtained by solvothermal synthesis is discussed.