Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Catechin sublimation pressure and solubility in supercritical carbon dioxide

Soetaredjo, F. E.[Felycia Edi], Ismadji, S.[Suryadi], Liauw, M. Y.[Maria Yuliana], Angkawijaya, A. E.[Artik Elisa], Ju, Y.-H.[Yi-Hsu]
Fluid Phase Equilib. 2013, 358, 220-225
ABSTRACT
Solubility of (+)-catechin in SC-CO2 was measured at several temperatures (313.15, 323.15, 333.15 and 343.15 K) and pressure in the range of 12 to 26 MPa using ethanol as the co-solvent (5 mol.%). The experimental data were used for the correlation of density dependent solute solubility parameters. The equations of Chrastil, del Valle and Aguilera, Adachi and Lu, Gonzalez, and Mendez-Santiago and Teja were fitted very well for the solubility of (+)-catechin. The rate of mass loss of (+)-catechin showed that its sublimation pressure is very low, an indication of the stability of the compound. Thermogravimetric analysis was used to determine the sublimation pressure.
Compounds
# Formula Name
1 C15H16O7 (+)-catechin hydrate
2 C2H6O ethanol
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
  • 2
  • 3
  • 1
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Solvent: Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • Phase equilibration
  • 60