Specific heat capacity and thermodynamic properties of CuTeO3 and HgTeO3

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• 作者：Lubka Atanasova (1)
  Ginka Baikusheva-Dimitrova (2)
  Georgy Gospodinov (2)
  
• 关键词：Heat capacity ; Thermodynamic properties ; Tellurites ; CuTeO3 and HgTeO3
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2014
• 出版时间：October 2014
• 年：2014
• 卷：118
• 期：1
• 页码：493-497
• 全文大小：271 KB
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• 作者单位：Lubka Atanasova (1)
  Ginka Baikusheva-Dimitrova (2)
  Georgy Gospodinov (2)
  
  1. Inorganic Chemical Technology Department, University 鈥淧rof. Dr. Asen Zlatarov鈥?Burgas, Prof. Yakimov str. 1, 8010, Burgas, Bulgaria
  2. Inorganic and Analytic Chemistry Department, University 鈥淧rof. Dr. Asen Zlatarov鈥?Burgas, Prof. Yakimov str. 1, 8010, Burgas, Bulgaria
  
• ISSN：1572-8943

文摘

Tellurites of CuTeO3 and HgTeO3 are synthesized and their specific molar heat capacities are experimentally determined for the first time. The tellurites discussed in the present paper are used for preparation of optical glasses with special properties for optoelectronics, nuclear and power industries. The tellurites synthesized are prepared for chemical analysis, differential thermal analysis and X-ray analysis. The use of the tellurites studied is related to knowing their thermodynamic properties like specific molar heat capacity (C p,m), enthalpy \( \left( {\Delta_{{{\text {T}}^{\prime}}}^{\text{T}} H_{\text{m}}^{0} } \right), \) entropy \( \left( {\Delta_{{{\text {T}}^{\prime}}}^{\text{T}} S_{\text{m}}^{0} } \right) \) and Gibbs energy \( \left( { - \Delta_{{{\text {T}}^{\prime}}}^{\text{T}} G_{\text{m}}^{0} } \right) \) . The temperature dependences of their molar heat capacities are determined using the least squares method. The thermodynamic properties are calculated: entropy, enthalpy and Gibbs function.