Modeling Interfacial Tension of Heptane + Alcohol Mixtures Using Cubic Plus Association Equation of State Plus Simplified Gradient Theory

This work has been dedicated to modeling the interfacial tension of heptane + alcohol mixtures in temperature range 288.15 K 333.15 K. The cubic plus association equation state is applied liquid–vapor phase equilibrium calculations. binary interaction parameters are obtained according experimental isothermal and isobaric data. For parameters, correlations have as a function for equilibrium, constant value equilibrium. linear gradient theory used predictive adjustment approach describe mixtures. influence pure components were symmetric correlated with temperature. results this show that capable simultaneously representing studied. agreement those published literature.