Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K2HPO4

高等学校化学研究 ›› 2004, Vol. 20 ›› Issue (2): 195-199.

Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K₂HPO₄

LIN Jin-qing, TAN Ping-hua, JIN Chun-ying, LI Ming-chun

College of Material Science and Engineering, Huaqiao University, Quanzhou 362011, P.R. China

收稿日期:2003-11-22 出版日期:2004-04-24 发布日期:2011-08-06
基金资助:
Supported by Naturd Science Foundation of Fujian Province(No.E0210022), Japan Science and Technology Corporation(JST).

Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K₂HPO₄

LIN Jin-qing, TAN Ping-hua, JIN Chun-ying, LI Ming-chun

College of Material Science and Engineering, Huaqiao University, Quanzhou 362011, P.R. China

Received:2003-11-22 Online:2004-04-24 Published:2011-08-06
Supported by:
Supported by Naturd Science Foundation of Fujian Province(No.E0210022), Japan Science and Technology Corporation(JST).

摘要/Abstract

摘要： The isothermal solubility data of aqueous two-phase system ethanol+ water+ K₂HPO₄ were determined with the turbidity titration method at 303.2 K. The binodal curves were described by using the Mistry equation very well. An experimental procedure for measuring the liquid-liquid equilibrium data of the aqueous two-phase system was proposed, in which the concentrations of the coexisting phases were determined with the corresponding densities of the solution. The tie lines were satisfactorily described by using the Othmer Tobias and Bancroft equations.

关键词: Aqueous two-phase system, Solubility, Turbidity titration, LLE, Ethanol, K₂HPO₄

Abstract: The isothermal solubility data of aqueous two-phase system ethanol+ water+ K₂HPO₄ were determined with the turbidity titration method at 303.2 K. The binodal curves were described by using the Mistry equation very well. An experimental procedure for measuring the liquid-liquid equilibrium data of the aqueous two-phase system was proposed, in which the concentrations of the coexisting phases were determined with the corresponding densities of the solution. The tie lines were satisfactorily described by using the Othmer Tobias and Bancroft equations.

Key words: Aqueous two-phase system, Solubility, Turbidity titration, LLE, Ethanol, K₂HPO₄

LIN Jin-qing, TAN Ping-hua, JIN Chun-ying, LI Ming-chun. Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K₂HPO₄[J]. 高等学校化学研究, 2004, 20(2): 195-199.

LIN Jin-qing, TAN Ping-hua, JIN Chun-ying, LI Ming-chun. Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K₂HPO₄[J]. Chemical Research in Chinese Universities, 2004, 20(2): 195-199.

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Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K₂HPO₄

Measurement and Correlation of Equilibrium Data for Aqueous Two-phase System Ethanol+ Water+ K₂HPO₄

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