Isobaric vapor–liquid equilibrium for methyl acetate+methanol system containing different ionic liquids at 101.3kPa

Zhang, Zhigang; Hu, Angran; Zhang, Tao; Zhang, Qinqin; Yang, Zeqiang; Li, Wenxiu

doi:10.1016/j.fluid.2015.07.045

Cited by 22 publications

(16 citation statements)

References 34 publications

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“…In recent years, ionic liquids (ILs) have been widely used as entrainers of extractive distillation since they showed the excellent abilities to separate azeotropic mixtures by Seiler et al [6][7][8][9][10][11][12][13][14][15][16][17]. ILs are composed of organic cations and inorganic or organic anions.…”

Section: Introductionmentioning

confidence: 99%

Isobaric vapor–liquid equilibrium for ternary mixtures of acetone + methanol + ionic liquids at 101.3 kPa

et al. 2017

Fluid Phase Equilibria

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In order to avoid the pollution and the corrosion of inorganic anions, such as BF 4-, SO 4 2and Cl-, three ionic liquids (ILs) with different organic anions (1-methylimidazolium acetate [MIM]Ac, 1-methylimidazolium 2-hydroxypropionate [MIM]HPr and 1-methyl imidazolium propionate[MIM]Pr) were studied as entrainers for separating acetone + methanol azeotropic mixture. Isobaric vapor-liquid equilibrium (VLE) data for the ternary system containing ILs were measured at 101.3kPa by using an all-glass dynamic recirculating still. The experimental data are well correlated by using the nonrandom two-liquid (NRTL) model. The separation ability of the three ILs follows the order: [MIM]Ac > [MIM]HPr > [MIM]Pr.

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Section: Introductionmentioning

confidence: 99%

Isobaric vapor–liquid equilibrium for ternary mixtures of acetone + methanol + ionic liquids at 101.3 kPa

et al. 2017

Fluid Phase Equilibria

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“…Vapor–liquid phase diagrams of (a) {methanol-methyl acetate-[C6MIm][Cl]/[BzMIm][Cl]} and (b) {ethanol-ethyl acetate-[C2MIm][DEP]/[C4MIm][DEP]} …”

Section: Resultsmentioning

confidence: 99%

Comprehensive Evaluation of COSMO-RS for Predicting Ternary and Binary Ionic Liquid-Containing Vapor–Liquid Equilibria

Qin

Wang

Zhou

et al. 2021

Ind. Eng. Chem. Res.

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To develop efficient ionic liquid (IL)-based separation processes like extractive distillation, the knowledge of IL-involved vapor–liquid equilibria (VLE) is necessary. Since experimental measurements are usually time-consuming and expensive, reliable models for VLE prediction are highly desirable. In this work, the predictive performance of COSMO-RS is systematically evaluated for ternary and binary IL-containing VLE systems. A large experimental VLE database is established from the literature, including 6531 and 2265 data points for ternary and binary systems, respectively. The ternary and binary VLE systems are divided into five and three subsets based on the varieties of molecular solutes. The COSMO-RS performance in capturing the effects of IL and solute structures, IL dosage, and temperature on VLE is analyzed. COSMO-RS provides generally qualitative and in some cases quantitative description of the VLE behaviors and thus could be used as a valuable tool for prior IL screening and process analysis for related separations.

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“…The NRTL model was adopted to correlate the ternary VLE data because it has been reported to reproduce the experimental data of the IL-containing systems quite well. [30][31][32][33][34] The parameters for ethyl acetate (1) + 2-propanol (2) were first obtained from the IL-free binary VLE data, and other parameters corresponding to the solvents-IL were obtained from the ternary VLE data. The parameters were regressed with the aid of Levenberg-Marquardt method by minimizing objective function as below:…”

Section: Phase Equilibrium Model For the Vle Datamentioning

confidence: 99%

Separation of ethyl acetate and 2-propanol azeotropic mixture using ionic liquids as entrainers

Zhang

et al. 2016

Fluid Phase Equilibria

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Ionic liquids (ILs) as entrainers for the separation of ethyl acetate and 2-propanol azeotropic mixture were proposed in this work. Through the isobaric vapor-liquid equilibrium (VLE) experiments, we found that the three investigated ILs, namely 1-butyl-3-methylimidazolium acetate ([BMIM][Ac]), 1-butyl-3-methylimidazolium bromide ([BMIM][Br]), and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]), could significantly enhance the separation factor of ethyl acetate and 2-propanol, and eliminate the azeotropic point. [BMIM][Ac] produced the most notable salting-out effect on ethyl acetate and 2-propanol among the three investigated ILs. Moreover, the experimental data were well correlated with the non-random two liquid (NRTL) model. Finally, σ-Profiles of solvents and ILs were used to explain the different separate abilities of the three investigated ILs.

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Isobaric vapor–liquid equilibrium for methyl acetate+methanol system containing different ionic liquids at 101.3kPa

Cited by 22 publications

References 34 publications

Isobaric vapor–liquid equilibrium for ternary mixtures of acetone + methanol + ionic liquids at 101.3 kPa

Isobaric vapor–liquid equilibrium for ternary mixtures of acetone + methanol + ionic liquids at 101.3 kPa

Comprehensive Evaluation of COSMO-RS for Predicting Ternary and Binary Ionic Liquid-Containing Vapor–Liquid Equilibria

Separation of ethyl acetate and 2-propanol azeotropic mixture using ionic liquids as entrainers

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