High-temperature heat capacity and thermodynamic properties of Pb4V2O9 and Pb8V2O13

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• 作者：L. T. Denisova ; A. D. Izotov ; L. A. Irtyugo ; Yu. F. Kargin…
• 刊名：Doklady Physical Chemistry
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：467
• 期：2
• 页码：49-52
• 全文大小：218 KB
• 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：1608-3121
• 卷排序：467

文摘

The molar heat capacity of Pb₄V₂O₉ and Pb₈V₂O₁₃ in the temperature range 350–1000 K was measured by differential scanning calorimetry. It was determined that the plot C_p = f(T) for Pb₈V₂O₁₃ has an extremum within the range 416–516 K, which is due to a phase transition. A correlation was found between the heat capacity and composition of oxides in the PbO–V₂O₅ system. The data obtained allowed one to predict the specific heat capacity value for Pb(VO₃)₂.Original Russian Text © L.T. Denisova, A.D. Izotov, L.A. Irtyugo, Yu.F. Kargin, V.M. Denisov, V.V. Beletskii, 2016, published in Doklady Akademii Nauk, 2016, Vol. 467, No. 5, pp. 551–555.