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

Liquid-Liquid Equilibria of Hydrofluoroethers and Ionic Liquid 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide

Shiflett, M. B.[Mark B.], Yokozeki, A.
J. Chem. Eng. Data 2007, 52, 6, 2413-2418
ABSTRACT
Binary liquid-liquid equilibria (LLE) in mixtures of five hydrofluoroethers and room-temperature ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, have been measured for the first time using the volume-mass method. All five binary systems show large immiscibility gaps. The ionic liquid-rich side solutions become increasingly more soluble in HFE (hydrofluoroether) as the HFE normal boiling point decreases. Observed LLE are well correlated by use of the nonrandom two liquid (NRTL) solution model. The excess molar volumes of the HFE and ionic liquid rich side solutions are small and similar to ordinary binary mixtures which is opposite to what we have previously reported with hydrofluorocarbons (HFCs) in ionic liquids. Therefore, the insertion of an ether oxygen has changed the liquid structure of HFEs vs HFCs in ionic liquids.
Compounds
# Formula Name
1 C4H3F7O heptafluoropropyl methyl ether
2 C5H3F9O methyl nonafluoroisobutyl ether
3 C6H5F9O 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane
4 C7H3F13O 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-(trifluoromethyl)pentane
5 C9H5F15O 2-trifluoromethyl-3-ethoxydodecafluorohexane
6 C8H11F6N3O4S2 1-ethyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 6
  • POMD
  • 5
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 6
  • POMD
  • 1
  • 6
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 6
  • POMD
  • 1
  • 6
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 6
  • POMD
  • 1
  • 6
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 6
  • POMD
  • 1
  • 6
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 6
  • POMD
  • 2
  • 6
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 6
  • POMD
  • 2
  • 6
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 6
  • POMD
  • 2
  • 6
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 6
  • POMD
  • 2
  • 6
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 6
  • POMD
  • 3
  • 6
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 6
  • POMD
  • 3
  • 6
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 6
  • POMD
  • 3
  • 6
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 6
  • POMD
  • 3
  • 6
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 6
  • POMD
  • 4
  • 6
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 6
  • POMD
  • 4
  • 6
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 6
  • POMD
  • 4
  • 6
  • Mole fraction - 4 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 6
  • POMD
  • 4
  • 6
  • Mole fraction - 4 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 6
  • POMD
  • 6
  • 5
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 6
  • POMD
  • 6
  • 5
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 6
  • POMD
  • 6
  • 5
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 6
  • POMD
  • 6
  • 5
  • Mole fraction - 5 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 6