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

Measurements and Correlation of High-Pressure Densities of Imidazolium-Based Ionic Liquids

Tome, L. I. N.[Luciana I.N.], Carvalho, P. J.[Pedro J.], Freire, M. G.[Mara G.], Marrucho, I. M.[Isabel M.], Fonseca, I. M. A.[Isabel M. A.], Ferreira, A. G. M.[Abel G. M.], Coutinho, J. A. P.[Joao A. P.], Gardas, R. L.[Ramesh L.]
J. Chem. Eng. Data 2008, 53, 8, 1914-1921
ABSTRACT
In the present work, experimental density measurements are reported along with the derived thermodynamic properties, such as the isothermal compressibility (eT), the isobaric expansivity (Rp), and the thermal pressure coefficient (aV) for imidazolium-based ionic liquids (ILs), namely, 1-ethyl-3-methylimidazolium methylsulfate [C2mim][MeSO4], 1-ethyl-3-methylimidazolium ethylsulfate [C2mim][EtSO4], 1,3-diethylimidazolium bis- (trifluoromethylsulfonyl)imide [C2eim][Tf2N], and 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide [C10mim][Tf2N] in the pressure (0.10 less than P/MPa less than 35.00) and temperature (293.15 less than T/K less than 393.15) domains. It is shown that experimental densities are in good agreement with the predicted densities obtained by the Gardas and Coutinho method and the correlation using the Tait equation and Sanchez-Lacombe equation of state.
Compounds
# Formula Name
1 C7H14N2O4S 1-ethyl-3-methylimidazolium methylsulfate
2 C8H16N2O4S 1-ethyl-3-methylimidazolium ethyl sulfate
3 C9H13F6N3O4S2 1,3-diethylimidazolium bis[(trifluoromethyl)sulfonyl]imide
4 C16H27F6N3O4S2 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 80
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 80
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 80
  • POMD
  • 4
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 80