Isothermal vapor–liquid equilibrium for binary mixtures containing furfural and its derivatives

• Isothermal vapor–liquid equilibrium (VLE) data were measured.
• Vapor pressures of 2-methylfuran and VLE data of 2-methylfuran + furfuryl alcohol were measured.
• Isopropyl alcohol + furfuryl alcohol and furan + furfural were also studied.
• No azeotrope formed in the systems investigated.
• The VLE data were correlated well with Wilson–HOC, NRTL-HOC, UNIQUAC-HOC models.

The isothermal vapor–liquid equilibrium (VLE) data were measured for the binary systems of 2-methylfuran + furfuryl alcohol, isopropyl alcohol + furfuryl alcohol, and furan + furfural at 353.2, 373.2, and 408.2 K over entire composition range, including the vapor pressures of five constituent compounds. The experimental results of the investigated binary systems show no azeotrope formation and positive deviations from Raoult’s law. The thermodynamic consistency of these new binary VLE data has been confirmed by point, area, and infinite dilution tests. The Wilson–HOC, the NRTL-HOC, and the UNIQUAC-HOC models were used to correlate the VLE data. Comparable results were obtained from these three models.