Abstract
Isobaric vapor–liquid equilibria for the 1-propanol+1-ethyl-3-methylimidazolium dicyanamide ([emim [DCA] binary system and for the 1-propanol+water+[emim] [DCA] ternary system have been obtained at 100kPa using a recirculating still. The electrolyte nonrandom two-liquid (e-NRTL) model was used for fitting successfully the experimental data. The effect of [emim][DCA] on the 1-propanol+water system has been compared with that produced by other ionic liquids reported in the literature. From the results, [emim][DCA] appears as a potential entrainer for the extractive distillation of this solvent mixture, causing the azeotrope to disappear at 100kPa when the ionic liquid mole fraction is greater than 0.33.
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