Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solubilities of xanthone and xanthene in supercritical CO2

Huang, Z.[Zhen], Sun, G.-B.[Ge-Biao], Kawi, S.[Sibudjing], Shi, Y.[Yan], Wen, R.[Rui], Song, S.-W.[Shi-Wei]
Fluid Phase Equilib. 2005, 238, 1, 26-32
ABSTRACT
Equilibrium solubilities of the two pesticides xanthone and xanthene in supercritical CO2 have been measured by using a dynamic flow method combined with gravimetric analysis. Determinations were carried out at 308.15 and 328.15K for pressures ranging from 80 to 300 bar. The results show that xanthene is much more soluble in supercritical carbon dioxide than xanthone with its solubility over 10 times higher than that of xanthone, due to its higher volatility. The determined solubility data are well described by the Peng Robinson equation of state and the empirical density based Chrastil model over the pressure and temperature ranges studied.
Compounds
# Formula Name
1 C13H10O 10H-9-oxaanthracene
2 C13H8O2 9H-xanthen-9-one
3 CO2 carbon dioxide
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
  • 3
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • Density calibration data
  • 13
  • POMD
  • 2
  • 3
  • Mole fraction - 2 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 2
  • Density calibration data
  • 16