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

ABSTRACT

Isobaric vapor-liquid equilibria for the binary systems chloroform + ethanol and chloroform + 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([emim][triflate]) as well as the vapor-liquid equilibria for the chloroform + ethanol + [emim][triflate] ternary system have been obtained at 100 kPa using a recirculating still. Both binary and ternary systems containing ionic liquid present an immiscibility zone at high chloroform composition, which increases with temperature. Also, liquid-liquid equilibria for both systems have been determined. The measured ternary VLE data were correlated using Mock s electrolyte NRTL model which reproduces reasonably well the experimental values. The detected immiscibility does not affect the use of [emim][triflate] as an entrainer for the complete chloroform + ethanol separation, and the azeotrope has totally disappeared when the mole fraction of ionic liquid in the liquid phase is 0.21.