Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Measurement and correlation of phase equilibria for ternary systems of water + (ethanol / 1-propanol) + 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide at 298.15 K

Gao, J.[Jun], Ma, Y.[Yixin], Zhang, L.[Lianzheng], Liu, W.[Wei], Xu, D.[Dongmei], Xu, X.[Xicai], Wang, Y.[Yinglong]
Fluid Phase Equilib. 2016, 427, 340-344
ABSTRACT
Liquid-liquid phase equilibria for ternary systems of water + (ethanol/1-propanol) + 1-decyl-3- methylimidazolium bis (trifluoromethylsulfonyl) imide ([Dmim][NTf2]) were measured at T = 298.15 K and atmospheric pressure. Influences of alcohols with different length of alkyl chain on the liquid-liquid equilibria were revealed by the distribution coefficient and selectivity of the alcohols. The phase diagrams for the ternary systems were classified as Treybal's Type I behavior. The experimental data of ternary liquid-liquid equilibria were correlated by the nonrandom two liquid (NRTL) and the universal quasi-chemical (UNIQUAC) models, in which the interaction parameters were optimized. The values of root-mean-square deviation between the experimental and the calculated data show that those models can correlate the experimental data of the studied systems with good accuracy.
Compounds
# Formula Name
1 C2H6O ethanol
2 C3H8O propan-1-ol
3 C16H27F6N3O4S2 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide
4 H2O water
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
  • 4
  • 3
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 8
  • POMD
  • 2
  • 4
  • 3
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 4; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 9