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

1-Alkyl-2,3-dimethylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquids for the Liquid Liquid Extraction of Toluene from Heptane

Garcia, S.[Silvia], Larriba, M.[Marcos], Garcia, J.[Julian], Torrecilla, J. S.[Jose S.], Rodriguez, F.[Francisco]
J. Chem. Eng. Data 2011, 56, 8, 3468-3474
ABSTRACT
The liquid liquid equilibria (LLE) of three ternary systems formed by toluene, heptane, and 1-alkyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids {[xdmim][Tf2N], where x refers to ethyl (e), propyl (p), or butyl (b)} were determined at T = 313.2 K and atmospheric pressure. The methyl group in position 2 in the imidazolium cation seems to improve the selectivity of the liquid liquid extraction process of toluene from heptane compared to the results previously obtained for 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids {[xmim][Tf2N], where x refers to ethyl (e), propyl (p), or butyl (b)}. [edmim][Tf2N] and [pdmim][Tf2N] ILs seem to be alternatives for sulfolane in the extraction of toluene from heptane. The experimental LLE data were satisfactorily correlated by means of the thermodynamic nonrandom two-liquid (NRTL) model.
Compounds
# Formula Name
1 C7H16 heptane
2 C7H8 toluene
3 C9H13F6N3O4S2 1-ethyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide
4 C10H15F6N3O4S2 1,2-dimethyl-3-propylimidazolium bis[(trifluoromethyl)sulfonyl]imide
5 C11H17F6N3O4S2 1-butyl-2,3-dimethyl-1H-imidazolium bis(trifluoromethylsulfonyl)amide
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
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 1
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 1
  • POMD
  • 2
  • 3
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 1
  • POMD
  • 2
  • 3
  • Mole fraction - 2 ; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 1
  • POMD
  • 1
  • 4
  • Mole fraction - 4 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 1
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 1
  • POMD
  • 2
  • 4
  • Mole fraction - 4 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 1
  • POMD
  • 2
  • 4
  • Mole fraction - 2 ; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 1
  • POMD
  • 1
  • 5
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 1
  • POMD
  • 1
  • 5
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 1
  • POMD
  • 2
  • 5
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 1
  • POMD
  • 2
  • 5
  • Mole fraction - 2 ; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 1
  • POMD
  • 2
  • 1
  • 3
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 2; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 12
  • POMD
  • 2
  • 1
  • 4
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 2; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 12
  • POMD
  • 2
  • 1
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 2; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 12