Prediction of ternary excess enthalpy data by using the UNIFAC group contribution method

Abstract

The UNIFAC Group Contribution method is applied to predict ternary excess enthalpies H E . In order to improve previous predictions, values for the group interaction parameters are determined from binary excess enthalpy data. These parameters are used to estimate sixty-four sets of ternary H E data which are compared with data from the literature. Results are also compared with those obtained using methods to predict ternary excess enthalpies from the binary H E data for the three binary system involved