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

Comparing Composition- and Temperature-Dependent Viscosities of Binary Systems Involving Ionic Liquids

Haghani, A.[Abdolhossein], Saeva, D. R.[David R.], Iloukhani, H.[Hossein], Hoffmann, M. M.[Markus M.]
J. Chem. Eng. Data 2015, 60, 11, 3272-3288
ABSTRACT
More than 200 composition- and temperature-dependent viscosity datasets for binary systems involving ionic liquids are analyzed with the Arrhenius model to inspect the composition dependence of the Arrhenius fit parameters activation energy, Ea, and y-intercept, ln A. The analysis also includes a new viscosity dataset for the binary system 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide trichloromethane. The majority of the binary systems show linear dependence of Ea and ln A with mole fraction, either over the entire range of composition or over a wide range of compositions, typically between 0.2 less than xIL less than 1.0. These findings are useful for estimating unknown viscosities for binary systems involving ILs. As a side-outcome from the Arrhenius analysis and careful comparisons between datasets, a number of datasets are identified that are suspect of experimental inaccuracies.
Compounds
# Formula Name
1 C12H19F6N3O4S2 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide
2 CHCl3 trichloromethane
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
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Falling or rolling sphere viscometry
  • 4
  • POMD
  • 2
  • 1
  • Viscosity, Pa*s ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Falling or rolling sphere viscometry
  • 44