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

Surface Tensions and the Gibbs Excess Surface Concentration of Binary Mixtures of the Ionic Liquid 1-Ethyl-3-methylimidazolium Bis[(trifluoromethyl)sulfonyl]imide with Tetrahydrofuran and Acetonitrile

Geppert-Rybczynska, M.[Monika], Lehmann, J. K.[Jochen K.], Heintz, A.[Andreas]
J. Chem. Eng. Data 2011, 56, 4, 1443-1448
ABSTRACT
The surface tensions of binary mixtures containing the ionic liquid 1-ethyl-3-methyl-imidazolium bis[(trifluoromethyl)sulfonyl]imide ([EMIM][NTf2]) and the aprotic solvents tetrahydrofuran (THF) or acetonitrile were measured at temperatures in the range from (293.15 to 313.15) K (or to 308.15 K for the system with THF) using the pendant drop method. On the basis of these experimental results and activity coefficients taken from vapor pressure measurements, the Gibbs excess surface concentrations for mixtures were calculated. The results and their relationship to electrolyte solutions are discussed.
Compounds
# Formula Name
1 C4H8O tetrahydrofuran
2 C2H3N acetonitrile
3 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
  • 1
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ring tensiometer
  • 4
  • POMD
  • 2
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ring tensiometer
  • 5
  • POMD
  • 3
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ring tensiometer
  • 5
  • POMD
  • 1
  • 3
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • Ring tensiometer
  • 44
  • POMD
  • 2
  • 3
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • Ring tensiometer
  • 45