Liquid-Liquid Equilibrium Data for {Heptane plus Aromatic+1-(2-Hydroxyethyl)-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide ([hemim][NTf2])} Ternary Systems

被引:20
作者
Ebrahimi, M. [1 ]
Ahmadi, A. N. [2 ]
Safekordi, A. A. [1 ]
Fateminasab, F. [2 ]
Mehdizadeh, A. [2 ]
机构
[1] Sharif Univ Technol, Dept Chem & Petr Engn, Tehran, Iran
[2] Res Inst Petr Ind RIPI, Chem Sci & Technol Res Div, Tehran 1485733111, Iran
关键词
IONIC LIQUIDS; ALIPHATIC-HYDROCARBONS; ETHANOL PLUS; N-HEXANE; EXTRACTION; TOLUENE; CYCLOHEXANE; SEPARATION; AROMATICS; SULFOLANE;
D O I
10.1021/je400061z
中图分类号
O414.1 [热力学];
学科分类号
摘要
1-(2-Hydroxyethyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid ([hemim][NTf2]) was synthesized as a new functionalized ionic liquid to study the effect of addition of the hydroxyl group to the imidazolium cation on aliphatic/aromatic separations. For this purpose, liquid liquid equilibrium (LLE) data for {heptane + toluene or benzene + 1-(2-hydroxyethyl)-3-methylimidazolium bis (trifluoromethylsulfonyl)imide ([hemim][NTf2])} systems were measured at 313.2 K and atmospheric pressure. The measured LLE data were correlated,using three basically distinct thermodynamic models; that is, nonrandom two-liquid (NRTL), Othmer-Tobias, and Hand correlations. Results show that there is good agreement between correlated and experimental data. Our experimental results indicate that the addition of the hydroxyl group to imidazolium cation significantly enhances the performance of the ionic liquid in terms of selectivity.
引用
收藏
页码:197 / 204
页数:8
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