VAPOR-LIQUID-EQUILIBRIUM FROM INFINITE DILUTION ACTIVITY-COEFFICIENTS- MEASUREMENT AND PREDICTION OF OXYGENATED FUEL ADDITIVES WITH ALKANES

Comparative ebulliometry was used to measure activity coefficients at infinite dilution for binary systems of the oxygenated fuel additives methyl tertiary butyl ether, diisopropyl ether and ethanol with alkane s. The possibility of obtaining parameters for equations of state mixi ng rules from infinite dilution activity coefficients data was studied . The predictive abilities of some recent equation of state mixing rul es which incorporate excess Gibbs free energy models were critically e valuated, and a simple empirical technique for the evaluation of binar y interaction parameters in cubic equations of state using infinite di lution activity coefficient data is proposed.