2018 : Vapor pressures of diethyl carbonate?+?ethanol binary mixture and diethyl carbonate?+?ethanol?+?isooctane/toluene ternary mixtures at temperatures range of 303.15â??323.15?K

Prof.Ir. Ali Altway M.Sc
Prof.Dr.Ir. I Gede Wibawa M.Eng.
Annas Wiguno S.T., M.T.


Abstract

The vapor pressures of a diethyl carbonate+ ethanol binary mixture and two ternary mixtures containing diethyl carbonate+ ethanol+ isooctane/toluene with constant ethanol mass fractions of 20% were measured at temperatures ranging from 303.15 to 323.15 K using a simple quasi-static ebulliometer. The experimental data show that the vapor pressure decreases with increasing diethyl carbonate (DEC) fraction in the solution for all mixtures studied. The vapor pressure of the binary mixture correlated well with the Wilson, nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) models and gave an average absolute deviation (AAD) of 1.2%. The experimental data of the ternary mixtures were compared with predicted vapor pressures calculated using Wilson, NRTL and UNIQUAC models based on binary mixture parameters, which were obtained from binary data only. The performance of the group …