Phase Diagram of Quaternary System NaBr-KBr-CaBr2-H2O at 323 K

被引：5
作者：
Cui, Rui-Zhi
Wang, Wei
Yang, Lei
Sang, Shi-Hua [1 ]
机构：
[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Sichuan, Peoples R China
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2018年 / 92卷 / 03期
基金：
中国国家自然科学基金;
关键词：
underground brine; phase equilibrium; solubility; Pitzer's equation; bromide; CHEMICAL-EQUILIBRIUM MODEL; SOLID-LIQUID EQUILIBRIA; MINERAL SOLUBILITIES; NATURAL-WATERS; SOLUTION BEHAVIOR; DENOTES MOLALITY; TEMPERATURE; PREDICTION; THERMODYNAMICS; CRYSTALS;
D O I：
10.1134/S003602441803024X
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 equilibria in the system NaBr-KBr-CaBr2-H2O at 323 K were studied using the isothermal dissolution equilibrium method. Using the experimental solubilities of salts data, phase diagram was constructed. The phase diagram have two invariant points, five univariant curves, and four crystallization fields. The equilibrium solid phases in the system are NaBr, NaBr center dot 2H(2)O, KBr, and CaBr2 center dot 4H(2)O. The solubilities of salts in the system at 323 K were calculated by Pitzer's equation. There is shown that the calculated solubilities agree well with experimental data.
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页码：475 / 481
页数：7
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