Ternary Excess Molar Enthalpies of Alcohols with Methyl t-Butyl Ether at T=298.15 K

Ternary excess molar enthalpies HE m at 298.15 K and atmospheric pressure measured in a flowmicrocalorimeter are reported for the methanol+2-propanol+ methyl t-butyl ether (MTBE) and ethanol+1-propanol+MTBE systems. The ternary results have been correlated by means of a polynomial equation and used to construct constant excess enthalpy contours. Furthermore, the results have been compared with those calculated from a UNIQUAC associated-solution model taking into account molecular association of alcohols and solvation between unlike alcohols and alcohols with MTBE using only binary information