Synthesis and Thermodynamic Properties of Germanate Tb2Ge2O7

被引：4
|
作者：
Denisova, L. T. [1 ]
Kargin, Yu F. [2 ]
Irtyugo, L. A. [1 ]
Belousova, N., V [1 ]
Beletskii, V. V. [1 ]
Denisov, V. M. [1 ]
机构：
[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia
[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119991, Russia
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2019年 / 64卷 / 07期
关键词：
terbium germanate; differential scanning calorimetry; heat capacity; enthalpy and entropy changes; reduced Gibbs energy; TEMPERATURE HEAT-CAPACITY; RANGE; NDVO4; PRVO4;
D O I：
10.1134/S0036023619070052
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Germanate Tb2Ge2O7 has been prepared by solid-phase synthesis from a stoichiometric mixture of Tb2O3 and GeO2 by sequential firing in air at temperatures of 1273-1473 K. The effect of temperature on its molar heat capacity has been studied by differential scanning calorimetry. According to the obtained dependence C-p = f(T), the thermodynamic properties (enthalpy and entropy changes and the reduced Gibbs energy) have been calculated, and the specific heat value at 298 K has been estimated.
引用
收藏
页码：886 / 889
页数：4
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