Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Ternary Liquid Liquid Equilibrium of Azeotropes (Water +2-Propanol) with Ionic Liquids ([Dmim][NTf2]) at Different Temperatures

Xu, X.[Xicai], Zhao, T.[Tingran], Wang, Y.[Yongkun], Geng, X.[Xueli], Wang, Y.[Yinglong]
J. Chem. Eng. Data 2017, 62, 5, 1667-1672
ABSTRACT
The liquid liquid equilibrium (LLE) of a ternary system of water (H2O) + 2-propanol (IPA) + 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Dmim][NTf2]) ionic liquid (IL) was measured in the temperature range from 278.15 K to 298.15 K at atmospheric pressure. The distribution coefficient and selectivity were calculated to determine the influence of the temperature on the LLE. The results indicate that a decrease in temperature reduces the solubility of H2O in [Dmim][NTf2] and increases the immiscibility region of the ternary phase diagram. The experimental data were correlated using the NRTL and the UNIQUAC models, and the critical properties for [Dmim][NTf2] were determined.
Compounds
# Formula Name
1 C3H8O propan-2-ol
2 C16H27F6N3O4S2 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide
3 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
  • 3
  • 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 16
  • POMD
  • 3
  • 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 2