International audienceThe present study concerns phase equilibria measurements involving oxygenated components (furan and furfural) and potential solvents of extraction (n-hexane, ethanol and n-octanol) using an ebulli-ometer at atmospheric pressure. New liquid-liquid equilibrium data concerning the ternary system furan þ furfural þ n-hexane are also presented. The experimental technique used for the liquid-liquid equilibrium measurements is based on the static analytic method. The two liquid phases are sampled using a syringe and analyzed using gas chromatograph. Two thermodynamic approaches are considered for the data treatment: the first considers a dissymmetric approach using the NRTL activity coefficient model, and the second considers a group contribution model based on the PC-SAFT EoS (GC-PPC SAFT). The experimentally measured data were successfully correlated with the models proposed
Density and speed of sound measurements have been performed, at atmospheric pressure, using an Anton Paar digital vibrating tube densitometer for pure ethanol, 1-Octanol, nhexane, furan and eugenol, from 278.15 to 323.15 K and for binary mixtures of furan + ethanol, furan + 1-Octanol, eugenol + 1-Octanol and eugenol + n-hexane from 278.15 to 323.15 K. Excess molar volumes were calculated and compared. The Redlich Kister correlation was used to correlate the data. In order to identify the most relevant molecular interaction which contribute to the excess molar volume, the Prigogine Flory Patterson theory was applied to correlate and predict the excess molar volume of the mixtures.
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