6533b823fe1ef96bd127f392
RESEARCH PRODUCT
Isobaric Vapor–Liquid Equilibria for the Extractive Distillation of Ethanol + Water Mixtures Using 1-Ethyl-3-methylimidazolium Dicyanamide
Ernesto VercherA. Vicent OrchillésAntoni Martínez-andreuPablo J. MiguelFrancisco J. Llopissubject
Activity coefficientTernary numeral systemChemistryGeneral Chemical EngineeringAnalytical chemistryGeneral ChemistrySolventchemistry.chemical_compoundAzeotropeIonic liquidNon-random two-liquid modelExtractive distillationOrganic chemistryDicyanamidedescription
Isobaric vapor–liquid equilibria (VLE) for the binary systems ethanol + 1-ethyl-3-methylimidazolium dicyanamide ([emim][DCA]) and water + [emim][DCA] as well as the VLE for the ternary system ethanol + water + [emim][DCA] have been obtained at 100 kPa using a recirculating still. The effect of [emim][DCA] on the ethanol + water system has been compared with that produced by another ionic liquid reported in the literature on the basis of the variation of solvent activity coefficients in ionic liquid (IL) + molecular solvent binary systems. From the results, [emim][DCA] appears as one of the best entrainers for the extractive distillation of the ethanol + water mixtures, causing the azeotrope to disappear at 100 kPa for ionic liquid mole fractions as low as 0.019. The experimental data were fitted with the Mock's electrolyte nonrandom two-liquid (NRTL) model, with a good agreement.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-10-21 | Journal of Chemical & Engineering Data |