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

Solubilities and Thermodynamic Study of Carbon Tetrachloride in Imidazolium Ionic Liquids at Different Temperatures

Zhang, J.[Jun], Yao, H.[Hairui], Li, C.[Chengxuan], Du, X.[Xigang], Bai, X.[Xiaokang], Li, J.[Jingjing], Liu, J.[Junna]
J. Chem. Eng. Data 2014, 59, 3, 672-677
ABSTRACT
Solubilities of carbon tetrachloride in four imidazolium ionic liquids including 1-butyl-3-methyl imidazolium bis(trifluoromethyl sulfonyl) imide ([Bmim][NTf2]), 1-butyl-3-methyl imidazolium dicyanamide ([Bmim][N(CN)2]), 1-butyl-3-methyl imidazolium hexafluorophosphate ([Bmim][PF6]), and 1-butyl-3-methyl imidazolium tetrafluoroborate ([Bmim][BF4]) have been experimentally determined using the double-liquid phase isothermal equilibrium method in the temperature range from (298.15 to 318.15) K and at ambient pressure. An empirical equation was proposed to correlate the solubility data with temperatures. The dissolving thermodynamic function variations involving ?Gs?, ?Hs?, and ?Ss? have been evaluated based on the solubility results. Through the calculation and analysis for polarity, steric hindrance, and interaction energy of CCl4 with the anions, the sequence of dissolving ability of the ionic liquids for CCl4 was discussed, and a dissolution mechanism as well as dissolution driving force have been suggested. The results show that at a certain temperature the dissolving ability of the ionic liquids for CCl4 changes in the order x[Bmim][NTf2] greater than x[Bmim][N(CN)2] greater than x[Bmim][BF4] greater than x[Bmim][PF6], and the dissolving ability of each ionic liquid goes up with an increase in temperature. The dissolution of CCl4 in the ionic liquids is an endothermic, enthalpy-driven process.
Compounds
# Formula Name
1 C8H15F6N2P 1-butyl-3-methylimidazolium hexafluorophosphate
2 C10H15F6N3O4S2 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
3 C10H15N5 1-butyl-3-methylimidazolium dicyanamide
4 C8H15BF4N2 1-butyl-3-methylimidazolium tetrafluoroborate
5 CCl4 tetrachloromethane
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
  • 5
  • 1
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • gravimetric
  • 7
  • POMD
  • 5
  • 4
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • gravimetric
  • 7
  • POMD
  • 5
  • 3
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • gravimetric
  • 7
  • POMD
  • 5
  • 2
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • gravimetric
  • 7