Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Isobaric vapor-liquid equilibria for the 1-propanol + water + 1-ethyl-3-methylimidazolium dicyanamide system at 100 kPa

Orchilles, A. V., Miguel, P. J.[Pablo J.], Gonzalez-Alfaro, V.[Vicenta], Llopis, F. J.[Francisco J.], Vercher, E.[Ernesto], Martinez-Andreu, A.[Antoni]
J. Chem. Thermodyn. 2017, 113, 116-123
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 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 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 100 kPa when the ionic liquid mole fraction is greater than 0.33.
Compounds
# Formula Name
1 C3H8O propan-1-ol
2 H2O water
3 C8H11N5 1-ethyl-3-methylimidazolium dicyanamide
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 1
  • POMD
  • 1
  • 3
  • Boiling temperature at pressure P, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 31
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 2 ; Liquid
  • Mole fraction - 2 ; Gas
  • Mole fraction - 1 ; Gas
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Chromatography
  • Chromatography
  • Chromatography
  • 76
  • POMD
  • 2
  • 3
  • Boiling temperature at pressure P, K ; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4