EXCESS PROPERTIES OF THE TERNARY MIXTURE TERT-AMYL METHYL ETHER (TAME) + METHANOL + HEXANE AT 313.15 K

Experimental VLE data at 313.15 K for the ternary system TAME + methanol + hexane are reported. A static method using an isothermal total pressure cell (Van Ness’ technique) has been employed. Reduction of the experimental data has been done by Barker’s method using Wohl expansion, NRTL, Wilson and UNIQUAC equations. Moreover, experimental results have been compared to predictions for the ternary system obtained from its corresponding binaries from Wilson, NRTL and UNIQUAC models. To complete the thermodynamic description of ternary system TAME + methanol + hexane at 313.15 K, excess enthalpies have been measured using a quasi-isothermal flow calorimeter. The experimental data have been fitted using a polynomial equation. Excess Gibbs energy data calculated from VLE data and excess enthalpies have been used to calculate the excess entropy of the ternary system at 313.15 K.