Abstract
Liquid–liquid equilibrium (LLE) data for ternary systems formed by aromatic compounds (benzene, ethylbenzene), cycloalkanes (cyclohexane, methylcyclohexane, cyclooctane), and the ionic liquid 1-butyl-3-methylimidazolium methylsulfate, [BMim][MSO4], have been measured at T = 298.15 K and atmospheric pressure, with the aim of studying the influence of the structure of cycloalkanes and aromatic compounds on liquid–liquid equilibrium. Values of solute distribution ratio and selectivity were evaluated to check the ability of [BMim][MSO4] as a solvent for extraction. The results obtained were compared to those previously reported using other ionic liquids and sulfolane. The nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) thermodynamic models were used to correlate the experimental LLE data for all of the studied ternary systems.
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