Header menu link for other important links
X
Measurements and correlation of high-pressure densities of phosphonium based ionic liquids
Published in
2011
Volume: 56
   
Issue: 5
Pages: 2205 - 2217
Abstract
Experimental density measurements are reported along with the derived thermodynamic properties (isothermal compressibility, isobaric expansivity, and thermal pressure coefficient) for trihexyltetradecylphosphonium-based ionic liquids-chloride, bromide, bis(trifluoromethylsulfonyl)imide, dicyanamide and methyl sulfonate-in the pressure range (0.10 to 45.00 MPa) and temperature range (283.15 to 333.15) K. The effect of the anion of the ionic liquid on the properties under study was evaluated. Experimental densities were correlated using the Tait equation, the modified cell model equation of state, and the Sanchez-Lacombe equation of state, and compared against the predictive method proposed by Gardas and Coutinho. It is shown that the three correlations describe well all the ILs studied, with the Tait equation providing the lowest average relative deviation (less than 0.004 %) and the Sanchez-Lacombe equation of state the highest (inferior to 0.5 %), and that the predicted densities estimated by Gardas and Coutinho method are in good agreement with the experimental densities determined. © 2011 American Chemical Society.
About the journal
JournalJournal of Chemical and Engineering Data
ISSN00219568
Open AccessNo
Concepts (21)
  •  related image
    Cell model
  •  related image
    DENSITY MEASUREMENTS
  •  related image
    DICYANAMIDE
  •  related image
    Equation of state
  •  related image
    ISOBARIC EXPANSIVITY
  •  related image
    Isothermal compressibility
  •  related image
    Predictive methods
  •  related image
    PRESSURE RANGES
  •  related image
    RELATIVE DEVIATIONS
  •  related image
    SANCHEZ-LACOMBE
  •  related image
    TAIT EQUATION
  •  related image
    Temperature range
  •  related image
    THERMAL PRESSURE COEFFICIENT
  •  related image
    Bromine compounds
  •  related image
    Chlorine compounds
  •  related image
    Compressibility of liquids
  •  related image
    Density of liquids
  •  related image
    Equations of state
  •  related image
    High pressure effects
  •  related image
    Ions
  •  related image
    Ionic liquids