Journal of Chemical and Engineering Data, Vol.51, No.2, 518-525, 2006
Vapor pressures and activity coefficients of n-alcohols and benzene in binary mixtures with 1-methyl-3-butylimidazolium octyl sulfate and 1-methyl-3-octylimidazolium tetrafluoroborate
Vapor-liquid equilibria (VLE) of binary mixtures containing methanol, ethanol, propanol-1, and benzene in the ionic liquid [BMIM][OctS] or [OMIM][BF(4)] 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 K to 313.15 K. Activity coefficients gamma(i) of these solvents in the ionic liquids and osmotic coefficients phi(i) of the ionic liquids have been determined from the VLE data and are described formally by using the NRTL equation.