Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Study of Liquid–Liquid Equilibria of Toluene + (Hexane, Heptane, or Cyclohexane) with 1-Ethyl-3-methylimidazolium Ethylsulfate at 308.15 K
Marlon Martínez-ReinaEliseo Amado-GonzálezYonny Mauricio Muñoz-Muñoz
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2012 Volume 85 Issue 10 Pages 1138-1144


The extraction of toluene from hydrocarbons (hexane, heptane, and cyclohexane) was analyzed by liquid extraction with 1-ethyl-3-methylimidazolium ethylsulfate [EMim][EtSO4] ionic liquid, as a solvent. The experimental liquid + liquid equilibrium (LLE) data were determined at T = 308.15 K and atmospheric pressure. Selectivity and distribution coefficient, derived from the tie-lines, were used to determine the ability of [EMim][EtSO4] as solvent for the separation of toluene from its mixtures with alkanes and cycloalkane. The degree of consistency of the experimental LLE data was ascertained using the Othmer–Tobias equation. The experimental data for LLE of the ternary systems were correlated with the nonrandom two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) thermodynamic models.

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© 2012 The Chemical Society of Japan
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