N-octylpyridinium bromide applied to purification of benzene by extractive distillation: Thermodynamic properties for intuitive evaluation of entrainer

• The separation potential of [Opy]Br for benzene was evaluated by thermodynamic research. • Reliable NRTL model parameters were obtained by correlating binary VLE data. • Designed benzene/ethanol extractive distillation process with Aspen Plus software. The N -octylpyridinium bromide ([Opy]Br) ionic liquid was subjected to thermodynamic properties studies, including those of activity coefficients at infinite dilution ( γ 12 ∞ ) and...