铜酸钇的热力学性质
Thermodynamic properties of yttrium cuprate
摘要：
本文用溶液量热法结合文献数据和Y_2Cu_2O_5和Y_2O_3 + 2CuO混合物在6 M HCl中323.15K的溶液热力学曲线，测定了Y_2Cu_2O_5和Y_2O_3 + 2CuO二元氧化物的标准生成焓和生成焓。用绝热量热法测量了Y_2Cu_2O_5在8 ~ 303 K范围内的热容。根据实验数据计算了热容、熵和焓的平滑值。计算了298.15K时的热力学函数（热容、熵和焓）。基于所获得的数据，已经获得，上述复合氧化物在室温下就其分解成二元氧化物而言是热稳定的。
英文摘要：
The standard formation enthalpy and enthalpy from binary oxide of yttrium cuprate have been determined by solution calorimetry combining the solution enthalpies of Y2Cu2O5 and Y2O3 + 2CuO mixture in 6 M HCl at 323.15 K and literature data. The heat capacity of Y2Cu2O5 has been measured by adiabatic calorimetry from 8 up to 303 K. Smoothed values of heat capacities, entropies and enthalpies were calculated on the basis of experimental data. The thermodynamic functions (heat capacity, entropy and enthalpy) at 298.15 K have been calculated. On the basis of obtained data it has been obtained that above-mentioned complex oxide is thermodynamically unstable with respect to their decomposition into binary oxides at room temperatures.
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