利用二元水溶液的水活度数据预测混合水溶液的水活度

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• TRANSPORT PHENOMENA & FLUID MECHANICS • 上一篇下一篇

利用二元水溶液的水活度数据预测混合水溶液的水活度

刘艳升^a; 徐春明^a; 胡玉峰^b; 严骏^b

^a State Key Laboratory of Heavy Oil Processing, University of Petroleum, Beijing 102200, China ^b High Pressure Fluid Phase Behavior ＆ Property Research Laboratory, University of Petroleum, Beijing 102200, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-08-28 发布日期:2004-08-28
通讯作者: 刘艳升

Prediction of Water Activity for Mixed Aqueous Solutions from the Data of Their Binary Constituent Solutions

LIU Yansheng^a; XU Chunming^a; HU Yufeng^b; YAN Jun^b

^a State Key Laboratory of Heavy Oil Processing, University of Petroleum, Beijing 102200, China ^b High Pressure Fluid Phase Behavior ＆ Property Research Laboratory, University of Petroleum, Beijing 102200, China

Received:1900-01-01 Revised:1900-01-01 Online:2004-08-28 Published:2004-08-28
Contact: LIU Yansheng

摘要/Abstract

摘要： The equation of Patwardhan and Kumar for water activities of mixed electrolyte solutions is extended to aqueous solutions containing non-electrolytes. This equation and the linear isopiestic relation are used to predict water activities of 56 ternary aqueous solutions in terms of the data of their binary subsystems. Both equation of Patwardhan and Kumar and the linear isopiestic relation can provide good predictions for water activities of the present 40 electrolyte solutions, and the linear isopiestic relation generally yields better predictions. The predictions of the extended equation of Patwardhan and Kumar and the linear isopiestic relation are in general quite reasonable for the present 8 ternary solutions of electrolytes and non-electrolytes, and the results of the linear isopiestic relation are usually better. The predictions of these two methods generally agree well with the experimental data for the 8 non-electrolyte mixtures being studied, and the linear isoniestic relation is better.

关键词: 水;活性;溶液;混合工艺;线性理论

Abstract: The equation of Patwardhan and Kumar for water activities of mixed electrolyte solutions is extended to aqueous solutions containing non-electrolytes. This equation and the linear isopiestic relation are used to predict water activities of 56 ternary aqueous solutions in terms of the data of their binary subsystems. Both equation of Patwardhan and Kumar and the linear isopiestic relation can provide good predictions for water activities of the present 40 electrolyte solutions, and the linear isopiestic relation generally yields better predictions. The predictions of the extended equation of Patwardhan and Kumar and the linear isopiestic relation are in general quite reasonable for the present 8 ternary solutions of electrolytes and non-electrolytes, and the results of the linear isopiestic relation are usually better. The predictions of these two methods generally agree well with the experimental data for the 8 non-electrolyte mixtures being studied, and the linear isoniestic relation is better.

Key words: prediction, water activity, aqueous mixed solution, linear isopiestic relation, the equation of Patwardhan and Kumar

刘艳升,徐春明,胡玉峰,严骏. 利用二元水溶液的水活度数据预测混合水溶液的水活度[J]. CIESC Journal.

LIU Yansheng,XU Chunming,HU Yufeng,YAN Jun. Prediction of Water Activity for Mixed Aqueous Solutions from the Data of Their Binary Constituent Solutions[J]. .

利用二元水溶液的水活度数据预测混合水溶液的水活度

Prediction of Water Activity for Mixed Aqueous Solutions from the Data of Their Binary Constituent Solutions

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