THERMODYNAMICS OF DOUBLE OXIDES .2. GALVANIC-CELL STUDY OF BARIUM TUNGSTATES

被引：11

作者：

LEVITSKII, VA

HEKIMOV, Y

GERASSIMOV, JI

机构：

[1] Laboratory of Chemical Thermodynamics, Moscow State University, Chemical Faculty, Moscow

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 1979年 / 11卷 / 11期

关键词：

D O I：

10.1016/0021-9614(79)90138-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Electrochemical cells with CaO-doped thoria and CaF2 as solid electrolytes were used to determine the standard Gibbs energies of formation of barium tungstates in the range 1000 to 1400 K. Concordance of the results from cells with different combinations of electrodes confirms the reliability of the results. Enthalpies of formation and entropies of Ba3WO6, Ba2WO5, and BaWO4 have been calculated at elevated temperatures and at 298.15 K. A comparison of the results with literature data for MeO+WO3 (MeBa, Sr) is presented. The experimental results confirm the predicted order of formation of tungstates from MeO and WO3 in the systems studied. © 1979.

引用

页码：1075 / 1087

页数：13

共 32 条

[1] EXAMINATION OF SUBSTOICHIOMETRIC WO3-X CRYSTALS BY ELECTRON MICROSCOPY [J].