文摘
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. Theexperimental binary data sets were independently fitted with the electrolyte NRTL model, and the parameters ofMock's model were estimated for each binary system. These parameters, together with those early obtained formethanol + [emim][triflate], were used to predict the ternary VLE, which agreed reasonably with the experimentalvalues. The results suggest that the addition of [emim][triflate] to the methyl acetate + methanol mixture producedan important salting-out effect, and the azeotrope disappears when the mole fraction of ionic liquid in the liquidphase is greater than 0.129.