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

Effect of an Ionic Liquid (IL) Cation on the Ternary System (IL + p-Xylene + Hexane) at T= 298.15 K

Domanska, U.[Urszula], Pobudkowska, A.[Aneta], Zolek-Tryznowska, Z.[Zuzana]
J. Chem. Eng. Data 2007, 52, 6, 2345-2349
ABSTRACT
Liquid-liquid equilibrium data are presented for mixtures of {ionic liquid (butyl(2-hydroxyethyl)dimethylammonium tetrafluoroborate, or hexyl(2-hydroxyethyl)dimethylammonium tetrafluoroborate, or 1,3-dihexyloxymethylimidazolium tetrafluoroborate) + p-xylene + hexane} at 298.15 K. The alkyl chain length, hexyl vs butyl, has an influence on the separation process: the selectivities are statistically higher for the shorter alkyl chain. Unfortunately, polar 1,3-dihexyloxymethylimidazolium tetrafluoroborate is shown to have a very low selectivity. The nonrandom two liquid (NRTL) model was successfully used to correlate the experimental tie-lines and to calculate the phase compositions of the ternary systems. The average mean square deviation phase composition error is 0.018. The results are discussed in terms of the selectivity of separation of related systems. The data presented here indicate the usefulness of butyl(2-hydroxyethyl)dimethylammonium tetrafluoroborate as a solvent for the separation of aromatic and aliphatic hydrocarbons using solvent extraction.
Compounds
# Formula Name
1 C10H24BF4NO hexyl(2-hydroxyethyl)dimethylammonium tetrafluoroborate
2 C8H20BF4NO butyl(2-hydroxyethyl)dimethylammonium tetrafluoroborate
3 C17H33BF4N2O2 1H-Imidazolium, 1,3-bis[(hexyloxy)methyl]-, tetrafluoroborate
4 C6H14 hexane
5 C8H10 1,4-dimethylbenzene
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
  • 4
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 1
  • POMD
  • 5
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 1
  • POMD
  • 4
  • 1
  • Mole fraction - 1 ; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • NMR
  • 1
  • POMD
  • 4
  • 3
  • Mole fraction - 3 ; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • NMR
  • 1
  • POMD
  • 5
  • 4
  • 2
  • Mole fraction - 5 ; Liquid mixture 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 5 ; Liquid mixture 2
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • NMR
  • NMR
  • NMR
  • 9
  • POMD
  • 5
  • 4
  • 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 5 ; Liquid mixture 1
  • Mole fraction - 5; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • NMR
  • NMR
  • NMR
  • 7
  • POMD
  • 5
  • 4
  • 3
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 5 ; Liquid mixture 2
  • Mole fraction - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • NMR
  • NMR
  • NMR
  • 10