Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solubility of oxygen in substituted perfluorocarbons

Dias, A. M. A., Goncalves, C. M. B.[Carla M. B.], Legido, J. L., Coutinho, J. A. P., Marrucho, I. M.
Fluid Phase Equilib. 2005, 238, 1, 7-12
ABSTRACT
The solubilities of oxygen in 1Br-perfluoro-n-octane, 1H-perfluoro-n-octane and 1H,8H-perfluoro-n-octane were measured using the saturation method at temperatures between 288 and 313K and pressures close to atmospheric. The experimental data measured allows the calculation of derived properties as enthalpy and entropy of solution, which are not available in the literature, helping to elucidate about the solvation of oxygen in these fluorinated compounds. The study of the solubility of oxygen in linear-fluorinated molecules presenting different degrees of substitution on the terminal CF3 groups seems to indicate the existence of strong interactions between the oxygen and those groups. Newexperimental density and vapor pressure data for 1H,8H-perfluoro-n-octane, needed for solubility data reduction, were also measured and correlated with appropriate equations.
Compounds
# Formula Name
1 C8BrF17 1-bromoperfluorooctane
2 C8HF17 1H-perfluorooctane
3 C8H2F16 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluorooctane
4 O2 oxygen
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
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:8
  • 10
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:4
  • 6
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • equilibrium cell
  • 7
  • POMD
  • 2
  • 4
  • Mole fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • equilibrium cell
  • 6
  • POMD
  • 3
  • 4
  • Mole fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • equilibrium cell
  • 4