Thermodynamic Properties of M2EO4, M2Mo x O3x+1 and Double Chromates (M = Li, Na, K, Rb, Cs; E = Cr, Mo, W)

被引：3
|
作者：
Suponitskiy, Yu L. [1 ]
Zolotova, E. S. [1 ]
Dyunin, A. G. [1 ]
Liashenko, S. E. [1 ]
机构：
[1] Mendeleev Univ Chem Technol, Moscow 125047, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2018年 / 92卷 / 03期
关键词：
thermal analysis; dissolution calorimetry and high-temperature microcalorimetry in the melt; chromates; molybdates and tungstates of alkali metals; double chromates and molybdates; phase transition temperatures; linear correlations;
D O I：
10.1134/S0036024418030299
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The phase transition temperatures of chromates and molybdates of certain alkali metals, and the melting temperature and enthalpy of polymorphic transformations for tungstates, are determined by means of thermal analysis. Enthalpies of dissolution of rubidium and cesium chromates in water and enthalpies of dissolution of alkali metal tungstates in a melt at 923 K are measured via calorimetry. Standard enthalpies of formation of sought chromates are calculated. The linear correlations between the enthalpies of formation of sulfates, selenates, chromates, tungstates, and molybdates are established, and a linear correlation within - (Delta G (o) (ox))(-1)-(Delta MV)(ox))(-1) coordinates is found for isopolymolybdates.
引用
收藏
页码：397 / 400
页数：4
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