Abstract
Isobaric vapor–liquid equilibrium (VLE) data for the system (ethyl myristate+ethyl palmitate) were measured at 0.5, 1.0 and 1.5kPa with a VLE modified Othmer still. The esters used in this study are the major components of biodiesel. Thermodynamic consistency of the experimental data was checked both with the Herington consistency test and point consistency test of Van Ness Test, which ensure the reliability of experimental data. Furthermore, the experimental VLE data were regressed with Nonrandom Two-Liquid (NRTL) activity coefficient model and predicted by UNIFAC and Dortmund (modified UNIFAC) models. The results show that the calculated values of the vapor-phase mole fraction and boiling temperature by NRTL, UNIFAC models and Dortmund model agree well with the experimental data.
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