Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15—333.15 K

doi:10.1007/s40242-019-9193-3

高等学校化学研究 ›› 2020, Vol. 36 ›› Issue (5): 921-926.doi: 10.1007/s40242-019-9193-3

Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15—333.15 K

WU Xi, YANG Shuaishuai, XU Shiming, ZHANG Xinjie

Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, P. R. China

收稿日期:2019-07-19 修回日期:2019-11-28 出版日期:2020-10-01 发布日期:2020-10-01
通讯作者: WU Xi E-mail:xiwu@dlut.edu.cn
基金资助:
Supported by the National Natural Science Foundations of China(Nos.51606024, 51776029), the Project of the Key Laboratory of Ocean Energy Utilization and Energy Conservation of the Ministry of Education of China(No.LOEC-201904) and the Fundamental Research Funds for the Central Universities, China[No.DUT19RC(4)011].

Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15—333.15 K

WU Xi, YANG Shuaishuai, XU Shiming, ZHANG Xinjie

Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, P. R. China

Received:2019-07-19 Revised:2019-11-28 Online:2020-10-01 Published:2020-10-01
Contact: WU Xi E-mail:xiwu@dlut.edu.cn
Supported by:
Supported by the National Natural Science Foundations of China(Nos.51606024, 51776029), the Project of the Key Laboratory of Ocean Energy Utilization and Energy Conservation of the Ministry of Education of China(No.LOEC-201904) and the Fundamental Research Funds for the Central Universities, China[No.DUT19RC(4)011].

摘要/Abstract

摘要： The potassium acetate solutions are new potential working fluids for the closed-type reverse electrodialysis(RED) power generation system driven by thermal energy. In this paper, the solubilities of potassium acetate in water, 2,2,2-trifluoroethanol, ethanol and their binary mixtures were measured by using the laser dynamic method over the temperature range of 288.15 to 333.15 K under atmospheric pressure. The results indicate that the solubility of potassium acetate solution is influenced by both the solvent components and solution temperature evidently. Besides, it is found that the measured solubility data of the potassium acetate-water-2,2,2-trifluoroethanol solutions as per the laser dynamic method are slightly larger than that of the data obtained as per the static method. Finally, five correlation models, including the Van't Hoff model, Modified Apelblat model, Yaws model, λh model and Modified Apelblat-Jouyban-Acree model, were used to correlate the measured solubility data of those potassium acetate solutions, with the relative standard deviations within 0.23% to 1.58%.

关键词: Solubility, Electrolyte, Solvent, Potassium acetate

Abstract: The potassium acetate solutions are new potential working fluids for the closed-type reverse electrodialysis(RED) power generation system driven by thermal energy. In this paper, the solubilities of potassium acetate in water, 2,2,2-trifluoroethanol, ethanol and their binary mixtures were measured by using the laser dynamic method over the temperature range of 288.15 to 333.15 K under atmospheric pressure. The results indicate that the solubility of potassium acetate solution is influenced by both the solvent components and solution temperature evidently. Besides, it is found that the measured solubility data of the potassium acetate-water-2,2,2-trifluoroethanol solutions as per the laser dynamic method are slightly larger than that of the data obtained as per the static method. Finally, five correlation models, including the Van't Hoff model, Modified Apelblat model, Yaws model, λh model and Modified Apelblat-Jouyban-Acree model, were used to correlate the measured solubility data of those potassium acetate solutions, with the relative standard deviations within 0.23% to 1.58%.

Key words: Solubility, Electrolyte, Solvent, Potassium acetate

WU Xi, YANG Shuaishuai, XU Shiming, ZHANG Xinjie. Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15—333.15 K[J]. 高等学校化学研究, 2020, 36(5): 921-926.

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Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15—333.15 K

Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15—333.15 K

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