由二元亚系的数据预测混合电解质水溶液的活度系数

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由二元亚系的数据预测混合电解质水溶液的活度系数

刘植昌^a; 刘艳升^a; 胡玉峰^a; 曾鹏^a; 樊栓狮^b; 梁德青^b

^a State Key Laboratory of Heavy Oil Processing and High Pressure Fluid Phase Behavior & Property Research Laboratory, China University of Petroleum, Beijing 102200, China
^b Laboratory of Gas Hydrates & High-Pressure Fluids, Guangzhou Institute of Energy Conversion, Chinese Acad-emy of Sciences, Guangzhou 510070, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-08-28 发布日期:2006-08-28
通讯作者: 刘植昌

Prediction of Activity Coefficients for Mixed Aqueous Electrolyte Solutions from the Data of Their Binary Solutions

LIUZhichang^a;LIUYansheng^a;HUYufeng^a; ZENGPeng^a;FANShuanshi^b; LIANGDeqing^b

^a State Key Laboratory of Heavy Oil Processing and High Pressure Fluid Phase Behavior & Property Research Laboratory, China University of Petroleum, Beijing 102200, China
^b Laboratory of Gas Hydrates & High-Pressure Fluids, Guangzhou Institute of Energy Conversion, Chinese Acad-emy of Sciences, Guangzhou 510070, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-08-28 Published:2006-08-28
Contact: LIU Zhichang

摘要/Abstract

摘要： The simple equation relating the activity coefficient of each solute in mixed electrolyte solution to its value in binary solutions under isopiestic equilibrium was tested by comparison with the experimental data for the 18 electrolyte solutions consisting of 1׃1, 1׃2, and 1׃3 electrolytes. The isopiestic measurements were made on the quaternary system BaCl2-NH4Br-NaI-H2O and its ternary subsystems NaI-NH4Br-H2O, NaI-BaCl2-H2O, and NH4Br-BaCl2-H2O at 298.15K. The results were used to test the applicability of the Zdanovskii’s rule to the mixed electrolyte solutions which contain no common ions, and the agreement is excellent. The activity coefficients of the solutes in the above quaternary and ternary systems calculated from the above-mentioned simple equation are in good agreement with the Pitzer’s equation.

关键词: electrolyte solution;activity coefficient;isopiestic measurement;the Zdanovskii's rule;the Pitzer's equation

Abstract: The simple equation relating the activity coefficient of each solute in mixed electrolyte solution to its value in binary solutions under isopiestic equilibrium was tested by comparison with the experimental data for the 18 electrolyte solutions consisting of 1׃1, 1׃2, and 1׃3 electrolytes. The isopiestic measurements were made on the quaternary system BaCl2-NH4Br-NaI-H2O and its ternary subsystems NaI-NH4Br-H2O, NaI-BaCl2-H2O, and NH4Br-BaCl2-H2O at 298.15K. The results were used to test the applicability of the Zdanovskii’s rule to the mixed electrolyte solutions which contain no common ions, and the agreement is excellent. The activity coefficients of the solutes in the above quaternary and ternary systems calculated from the above-mentioned simple equation are in good agreement with the Pitzer’s equation.

Key words: electrolyte solution, activity coefficient, isopiestic measurement, the Zdanovskii's rule, the Pitzer's equation

刘植昌, 刘艳升, 胡玉峰, 曾鹏, 樊栓狮, 梁德青. 由二元亚系的数据预测混合电解质水溶液的活度系数[J]. CIESC Journal.

LIUZhichang,LIUYansheng,HUYufeng, ZENGPeng,FANShuanshi, LIANGDeqing. Prediction of Activity Coefficients for Mixed Aqueous Electrolyte Solutions from the Data of Their Binary Solutions[J]. .

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由二元亚系的数据预测混合电解质水溶液的活度系数

Prediction of Activity Coefficients for Mixed Aqueous Electrolyte Solutions from the Data of Their Binary Solutions

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