Separation of toluene from cyclic hydrocarbons using 1-butyl-3-methylimidazolium methylsulfate ionic liquid at T=298.15 K and atmospheric pressure

被引：28

作者：

Dominguez, Irene ^{[2
]}

Calvar, Noelia ^{[1
]}

Gomez, Elena ^{[2
]}

Dominguez, Angeles ^{[2
]}

机构：

[1] Univ Porto, Lab Separat & React Engn, LSRE Dept Engn Quim, Fac Engn, P-4200465 Oporto, Portugal

[2] Univ Vigo, Dept Ingn Quim, Vigo 36310, Spain

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2011年 / 43卷 / 05期

关键词：

Cycloalkane; Toluene; (Liquid plus liquid) equilibrium; BMim][MSO4] ionic liquid; TERNARY-SYSTEMS; AROMATIC-HYDROCARBONS; PHYSICAL-PROPERTIES; SOLVENT-EXTRACTION; BENZENE PLUS; EQUILIBRIA; SULFOLANE; ETHYLSULFATE; MIXTURES; ALKANES;

D O I：

10.1016/j.jct.2010.12.012

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper the extraction of toluene from cyclic hydrocarbons (cyclohexane, or methylcyclohexane, or cyclooctane, or cyclohexene) was analyzed by liquid extraction with 1-butyl-3-methylimidazolium methylsulfate ionic liquid, [BMim][MSO4], as solvent. The experimental (liquid + liquid) equilibrium (LLE) data were determined at T = 298.15 K and atmospheric pressure. Solubility curves were obtained by the cloud point method and tie-line compositions were determined by density measurement. An analysis of the influence of different cyclic hydrocarbons on the extraction was performed. The effectiveness of the extraction of toluene from cyclic hydrocarbons was evaluated by means of the solute distribution ratio and selectivity values. The degree of consistency of the experimental LLE data was ascertained using the Othmer-Tobias and Hand equations. The experimental data for the (liquid + liquid) equilibria of the ternary systems were correlated with the Non-Random Two-Liquid (NRTL) and UNIversal QUAsi-Chemical (UNIQUAC) thermodynamic models. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：705 / 710

页数：6

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