MEASUREMENT AND CORRELATION OF ISOTHERMAL VAPOR-LIQUID-EQUILIBRIUM DATA FOR THE SYSTEM ACETONE PLUS METHANOL PLUS LITHIUM BROMIDE

Isothermal vapor-liquid equilibrium data at three temperatures (39.5, 55.0, and 70.6)degrees C have been measured for the system acetone (1) + methanol (2) + lithium bromide (3) at constant salt molalities (0.5 00, 1.00, 2.00, 3.00 and 4.00 mol.kg(-1)) with the help of headspace g as chromatography. The experimental data were fitted using the electro lyte NRTL model (Mock et al., 1986), the extended UNIQUAC model (Sande r et al., 1986), the electrolyte UNIFAC group-contribution model (Kiki c et al., 1991) and the LIQUAC model (Li et al., 1994). The results of correlation were compared with the experimental data. Superior result s were obtained for the LIQUAC model.