VAPOR-LIQUID-EQUILIBRIA OF 2-PROPANOL-1,4-DIOXANE MIXTURES

Eight sets of experimental P-T-x data were determined for 2-propanol-1 ,4-dioxane mixtures using an ebulliometer. Five popular activity coeff icient models and a coexistence equation have been used to correlate e ach set of data through different optimization methods to obtain value s of the vapor phase compositions and excess Gibbs free energy. The re sults of these correlations have been compared. An attempt was made to evaluate the group interaction parameters for alcohol-1,4-dioxane mix tures to improve VLE predictions using the UNIFAC method. (C) 1998 Els evier Science B.V. All rights reserved.