SALT EFFECT OF LICL ON VAPOR-LIQUID-EQUILIBRIUM OF THE ACETONE-METHANOL SYSTEM

The effect of lithium chloride (LiCl) at salt mole fractions from 0.00 5 to 0.15 and at saturation on vapor-liquid equilibrium (VLE) of the b inary acetone-methanol system has been experimentally investigated at 101.32 kPa using a modified Othmer equilibrium still, in order to eluc idate the behavior of this mixture whose existing data are rather cont radictory. The salting-out effect of the salt on the VLE of the mixed solvent was explained by the preferential solvation theory. The experi mental data were correlated by the electrolytic NRTL model of Mock et al. (1986). The mean absolute deviations of the correlation for gamma and T are 0.018 and 0.74 K, respectively. (C) 1998 Elsevier Science B. V. All rights reserved.