6533b831fe1ef96bd12982f9
RESEARCH PRODUCT
Isobaric vapor-liquid equilibria for the extractive distillation of 2-propanol + water mixtures using 1-ethyl-3-methylimidazolium dicyanamide ionic liquid
Vicenta González-alfaroAntoni Martínez-andreuA. Vicent OrchillésFrancisco J. LlopisPablo J. MiguelErnesto Verchersubject
Ternary numeral systemAnalytical chemistry02 engineering and technology010402 general chemistryMole fraction01 natural sciencesAtomic and Molecular Physics and Optics0104 chemical sciencesPropanolchemistry.chemical_compound020401 chemical engineeringchemistryAzeotropeIonic liquidIsobaric processOrganic chemistryExtractive distillationGeneral Materials Science0204 chemical engineeringPhysical and Theoretical ChemistryDicyanamidedescription
Abstract Isobaric vapor–liquid equilibria for the binary systems 2-propanol + water, 2-propanol + 1-ethyl-3-methylimidazolium dicyanamide ([emim][DCA]), and water + [emim][DCA] as well as the vapor–liquid equilibria for the 2-propanol + water + [emim][DCA] ternary system have been obtained at 100 kPa 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 2-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 good entrainer for the extractive distillation of this solvent mixture, causing the azeotrope to disappear at 100 kPa when the ionic liquid mole fraction is greater than 0.085.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-07-01 | The Journal of Chemical Thermodynamics |