Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Isobaric vapor-liquid equilibria (VLE) for the binary systems methyl acetate + methanol and methyl acetate + 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([emim][triflate]) as well as the VLE for the methyl acetate + methanol + [emim][triflate] ternary system have been obtained at 100 kPa using a recirculating still. The experimental binary data sets were independently fitted with the electrolyte NRTL model, and the parameters of Mock s model were estimated for each binary system. These parameters, together with those early obtained for methanol + [emim][triflate], were used to predict the ternary VLE, which agreed reasonably with the experimental values. The results suggest that the addition of [emim][triflate] to the methyl acetate + methanol mixture produced an important salting-out effect, and the azeotrope disappears when the mole fraction of ionic liquid in the liquid phase is greater than 0.129.