Water Activity and Phase Equilibria Measurements and Model Simulation for the KCl-BaCl2-H2O System at 323.15 K and 0.1 MPa

被引：0

作者：

Han, Haijun ^{[1
,2
]}

Ma, Junjie ^{[1
]}

Xie, Dongyue ^{[3
]}

Shi, Yaqin ^{[1
]}

Xing, Kongqiang ^{[1
]}

Shao, Dongxu ^{[1
]}

Zhong, Shengkui ^{[1
]}

机构：

[1] Hainan Trop Ocean Univ, Hainan 572000, Peoples R China

[2] Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China

[3] Univ Sci & Technol China, Sch Rare Earths, Hefei, Peoples R China

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2023年 / 97卷 / 07期

基金：

中国国家自然科学基金;

关键词：

water activity; solubility; Pitzer-Simonson-Clegg model; barium chloride; potassium chloride; CHLORIDE-BARIUM CHLORIDE; ACTIVITY-COEFFICIENTS; THERMODYNAMIC PROPERTIES; TERNARY-SYSTEM;

D O I：

10.1134/S0036024423070129

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：

Water activities for the ternary system of KCl-BaCl2-H2O and its sub-binary system BaCl2-H2O are elaborately measured using an isopiestic method at 323.15 K. The solubility isotherms for the KCl-BaCl2-H2O system are determined by isothermal equilibrium method. It is found that the measured isopiestic composition lines for the KCl-BaCl2-H2O system slightly deviated from Zdanovskii rule, especially at lower water activity. Pitzer-Simonson-Clegg model is used to correlate the measured water activity and solubility data, and simulate the thermodynamic properties and predict the solubility of the ternary system. The reliability of the solubility data measured in this work is evaluated by comparing with the solubility isotherms calculated with Pitzer-Simonson-Clegg model. The measured water activity and solubility results are of great importance for predicting the phase diagram of other multi-component systems that related to this ternary system.

引用

页码：1459 / 1465

页数：7

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