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

Sulfonate-Based Ionic Liquids in the Liquid Liquid Extraction of Aromatic Hydrocarbons

Garcia, S.[Silvia], Garcia, J.[Julian], Larriba, M.[Marcos], Torrecilla, J. S.[Jose S.], Rodriguez, F.[Francisco]
J. Chem. Eng. Data 2011, 56, 7, 3188-3193
ABSTRACT
The liquid liquid equilibrium (LLE) data for the systems heptane + toluene + 1-ethyl-3-methylimidazolium methanesulfonate ([emim][CH3SO3]), 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([emim][CF3SO3]), or 1-ethyl-3-methylimidazolium 1,1,2,2-tetrafluoroethanesulfonate ([emim][CHF2CF2SO3]) at T = 313.2 K and atmospheric pressure were determined. To evaluate the suitability of these three ionic liquids for the extraction of aromatics from their mixtures with aliphatic hidrocarbons, the distribution ratios and separation factor curves from the LLE data were plotted and compared to those for the conventional solvent sulfolane. The degree of quality of the experimental LLE data was ascertained by applying the Othmer Tobias correlation. In addition, the phase diagrams for the ternary systems were plotted, and the experimental tie lines were satisfactorily correlated with the nonrandom two-liquid (NRTL) model.
Compounds
# Formula Name
1 C7H16 heptane
2 C7H8 toluene
3 C7H14N2O3S 1-ethyl-3-methylimidazolium methanesulfonate
4 C7H11F3N2O3S 1-ethyl-3-methylimidazolium trifluoromethanesulfonate
5 C8H12F4N2O3S 1-ethyl-3-methyl-1H-imidazolium 1,1,2,2-tetrafluoroethane-1-sulfonate
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
  • 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
  • H NMR
  • H NMR
  • H NMR
  • 11
  • 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
  • H NMR
  • H NMR
  • H NMR
  • 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
  • H NMR
  • H NMR
  • H NMR
  • 12