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

Effect of Solvent Cation Alkyl-Chain Length on the Separation of Butylbenzene from n-Tetradecane Using Hexafluorophosphate-Based Ionic Liquids at (313.15 and 333.15) K and 101.3 kPa

Al-Khaldi, Khaled, Al-Jimaz, Adel S., AlTuwaim, Mohammad S.
J. Chem. Eng. Data 2018, 63, 10, 3751-3759
ABSTRACT
The extraction of butylbenzene from n-tetradecane using three ionic solvents ([bmim][PF6], [hmim][PF6], and [omim][PF6]) was studied at two temperatures (313.15 K and 333.15 K) and under atmospheric pressure (101.3 kPa). Experimentally determined distribution coefficients (K) and solvent selectivities (S) were plotted against the mole fraction of butylbenzene in the solvent phase; improved results were obtained compared to the conventional solvent, sulfolane. The distribution coefficient and selectivity both increased with increasing alkyl chain length of the 1-alkyl-3-methylimidazolium moiety of the solvent cation. The UNIversal QUAsiChemical (UNIQUAC) model was satisfactorily applied for correlating the experimental Liquid-Liquid Equilibrium (LLE) data of all three systems. Furthermore, comparison with literature results revealed that the distribution coefficients decreased with increasing paraffin carbon number.
Compounds
# Formula Name
1 C8H15F6N2P 1-butyl-3-methylimidazolium hexafluorophosphate
2 C10H19F6N2P 1-hexyl-3-methylimidazolium hexafluorophosphate
3 C12H23F6N2P 1-octyl-3-methylimidazolium hexafluorophosphate
4 C14H30 tetradecane
5 C10H14 butylbenzene
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
  • 5
  • 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 5 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 38
  • POMD
  • 4
  • 5
  • 2
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 5 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 38
  • POMD
  • 4
  • 5
  • 3
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 5; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 38
  • POMD
  • 4
  • 1
  • Mole fraction - 4 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 2
  • POMD
  • 5
  • 1
  • Mole fraction - 5 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 2
  • POMD
  • 5
  • 1
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 2
  • POMD
  • 4
  • 2
  • Mole fraction - 4 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 2
  • POMD
  • 5
  • 2
  • Mole fraction - 5 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 2
  • POMD
  • 5
  • 2
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 2
  • POMD
  • 4
  • 3
  • Mole fraction - 4 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 2
  • POMD
  • 5
  • 3
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 2
  • POMD
  • 5
  • 3
  • Mole fraction - 5 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 2