用FRKS状态方程结合互作用函数预测三元系超额焓

利用Ｆ函数修改的立方状态方程———ＦＲＫＳ方程，并结合二元交互作用函数Ｌｉｊ（Ｔ，ｘｉ），关联各种类型的液态二元系的超额焓．对３５个液态二元系超额焓的计算结果表明，ＦＲＫＳ状态方程结合Ｌｉｊ函数能相当准确地关联二元系超额焓．在只用二元系的参数，不引入任何多元参数的条件下，将该方法推广用于预测三元系的超额焓，对１４个高度非理想三元系的超额焓的预测结果和实验值吻合很好

Prediction of Ternary Excess Enthalpies Using FRKS EOS Coupled with Interaction Function

The F function modification of RKS equation of state,coupled with the binary interaction function L ij (T,x i) ,was applied to correlate excess enthalpies of a variety of binary systems in liquid states.The results calculated of excess enthalpies for 35 liquid binary systems show that the FRKS EOS with L ij function can correlate binary excess enthalpies with satisfactory accuracy.The approach was extended to predict ternary excess enthalpies using only parameters of constituent binaries.The predicted excess enthalpies for 14 highly non ideal ternary mixtures are in good agreement with the experimental data.