Influence of ionic liquids on the separation factor of three standard separation problems

Vapor–liquid equilibria (VLE) for the binary systems benzene–cyclohexane, 1-hexene–n-hexane and 2-propanol–water and the ternary systems with the ionic liquids 1-hexyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide HMIM]⁺BTI]⁻ and 1-butyl-1-methyl-pyrrolidinium bis(trifluoromethylsulfonyl)imide BMPYR]⁺BTI]⁻ as entrainers were measured, to investigate the influence of ionic liquids on the separation factors. The experimental data were compared with the predicted results using mod. UNIFAC (Do). The predicted results are in good agreement with the experimental data.