Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride

doi:10.1016/S1004-9541(14)60021-5

Chin.J.Chem.Eng. ›› 2014, Vol. 22 ›› Issue (2): 164-169.DOI: 10.1016/S1004-9541(14)60021-5

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Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride

DENG Dongshun, QIAO Yuzhen, JI Dengxiang, GE Yun, ZHANG Lianzhong

Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China

Received:2012-07-02 Revised:2013-01-28 Online:2014-01-28 Published:2014-02-05
Contact: ZHANG Lianzhong
Supported by:
Supported by the National Natural Science Foundation of China (20776132) and the Natural Science Foundation of Zhejiang Province (Y4100699).

Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride

邓东顺, 乔玉珍, 姬登祥, 葛筠, 章连众

Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China

通讯作者: ZHANG Lianzhong
基金资助:
Supported by the National Natural Science Foundation of China (20776132) and the Natural Science Foundation of Zhejiang Province (Y4100699).

Abstract

Abstract: Vapor-liquid equilibrium (VLE) data for water + 2-propanol + 1-butyl-3-methylimidazolium chloride ([bmim]Cl) were measured. Six sets of complete T, x, y data are reported, in which the 2-propanol mole fraction on IL-free basis is fixed separately at 0.1, 0.2, 0.4, 0.6, 0.8, and approximate 0.98, while the IL mass fraction is varied from 0.1 to 0.8, in an interval of 0.1. The non-random-two-liquid (NRTL) and electrolyte non-random-two-liquid (eNRTL) equations are used to correlate the experimental data with satisfactory results. The ternary VLE behavior is also modeled with the parameters obtained by correlating two data sets, in which the mole fraction of 2-propanol on IL-free basis is approximately 0.1 and 0.98. In this way, the six sets of data are reproduced satisfactorily. With the eNRTL model, the root-mean-square deviation for temperature is 0.82 K and that for vapor-phase mole fraction is 0.0078. The influences of IL on activity coefficients and relative volatility of the volatile components are also graphically illustrated.

Key words: vapor-liquid equilibrium, eNRTL equation, ionic liquid, 2-propanol, activity coefficient, relative volatility

摘要： Vapor-liquid equilibrium (VLE) data for water + 2-propanol + 1-butyl-3-methylimidazolium chloride ([bmim]Cl) were measured. Six sets of complete T, x, y data are reported, in which the 2-propanol mole fraction on IL-free basis is fixed separately at 0.1, 0.2, 0.4, 0.6, 0.8, and approximate 0.98, while the IL mass fraction is varied from 0.1 to 0.8, in an interval of 0.1. The non-random-two-liquid (NRTL) and electrolyte non-random-two-liquid (eNRTL) equations are used to correlate the experimental data with satisfactory results. The ternary VLE behavior is also modeled with the parameters obtained by correlating two data sets, in which the mole fraction of 2-propanol on IL-free basis is approximately 0.1 and 0.98. In this way, the six sets of data are reproduced satisfactorily. With the eNRTL model, the root-mean-square deviation for temperature is 0.82 K and that for vapor-phase mole fraction is 0.0078. The influences of IL on activity coefficients and relative volatility of the volatile components are also graphically illustrated.

关键词: vapor-liquid equilibrium, eNRTL equation, ionic liquid, 2-propanol, activity coefficient, relative volatility

DENG Dongshun, QIAO Yuzhen, JI Dengxiang, GE Yun, ZHANG Lianzhong. Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride[J]. Chin.J.Chem.Eng., 2014, 22(2): 164-169.

邓东顺, 乔玉珍, 姬登祥, 葛筠, 章连众. Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride[J]. Chinese Journal of Chemical Engineering, 2014, 22(2): 164-169.

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Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride

Measurement and Modeling of Vapor-Liquid Equilibrium for Ternary System Water + 2-Propanol + 1-Butyl-3-methylimidazolium Chloride

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