Thermodynamic properties of mixtures containing ionic liquids: Vapor pressures and activity coefficients of n-alcohols and benzene in binary mixtures with 1-methyl-3-butyl-imidazolium bis(trifluoromethyl-sulfonyl) imide

Vapor–liquid equilibria (VLE) of binary mixtures containing methanol, ethanol, propanol-1 and benzene in the ionic liquid [BMIM] [NTf2] were studied by using a static method. VLE measurements were carried out over the whole concentration range at four different temperatures in the range from 298.15 to 313.15 K. Activity coefficients γi of these solvents in the ionic liquid have been determined from the VLE data and are described formally by using the NRTL equation.