Abstract

Extraction of toluene from alkane (hexane, heptane or octane) was studied with the ionic liquid 1-butyl 3-methylimidazolium nitrate ([Bmim][NO3]) or 1-methyl 3-octylimidazolium nitrate ([Omim][NO3]) at 298.15K and atmospheric pressure. The liquid–liquid equilibrium (LLE) data for ternary systems of toluene+alkane+ionic liquid were measured and the selectivity values were calculated. The consistency of the experimental data was examined, using the Othmer–Tobias and Hand equations. The selectivity values for the ternary systems with [Bmim][NO3] is more than [Omim][NO3]. The experimental data were correlated with the NRTL thermodynamic model.

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