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Appl. Sci. 2018, 8(9), 1519; https://doi.org/10.3390/app8091519

Effect of Ionic Liquids on the Isobaric Vapor-Liquid Equilibrium Behavior of Acetone-Chloroform

1
School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
2
Chemical Machinery School, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Received: 30 July 2018 / Revised: 21 August 2018 / Accepted: 22 August 2018 / Published: 1 September 2018
(This article belongs to the Special Issue Ionic Liquids for Green Chemical Technology)
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Abstract

Isobaric vapor-liquid equilibrium (VLE) data of the ternary system acetone + chloroform + 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) or 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][DEP]) were obtained at 101.3 kPa. Results indicated that the addition of [MMIM][DMP] or [EMIM][DEP] could eliminate the azeotropic point of the binary system of acetone + chloroform when the mole fraction of ionic liquids (ILs) was above 0.15. Besides, the experimental data could be well correlated by the nonrandom two-liquid (NRTL) model. The structures as well as interactions between molecular solvents (acetone, chloroform) and the ion pairs ([MMIM][DMP], [EMIM][DEP]) were studied by quantum chemical calculations. The result indicated that the interaction energies (ΔE) follow the order of ΔE(acetone + [EMIM][DEP]) > ΔE(acetone + [MMIM][DMP]) > ΔE(chloroform + [EMIM][DEP]) ≈ ΔE(chloroform + [MMIM][DMP]), and chloroform had stronger affinity to ionic liquids than acetone. View Full-Text
Keywords: ionic liquid; vapor-liquid equilibrium; NRTL model; acetone; chloroform; quantum chemical calculation ionic liquid; vapor-liquid equilibrium; NRTL model; acetone; chloroform; quantum chemical calculation
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Gao, Q.; Zhao, Z.; Jia, P.; Zhang, X. Effect of Ionic Liquids on the Isobaric Vapor-Liquid Equilibrium Behavior of Acetone-Chloroform. Appl. Sci. 2018, 8, 1519.

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