Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Diffusion coefficients of metal acetylacetonates in supercritical carbon dioxide

Kong, C. Y.[Chang Yi], Gu, Y. Y.[Yuan Yuan], Nakamura, M.[Masato], Funazukuri, T.[Toshitaka], Kagei, S.[Seiichiro]
Fluid Phase Equilib. 2010, 297, 2, 162-167
ABSTRACT
Binary diffusion coefficients, D12, of metal acetylacetonates such as palladium(II) acetylacetonate and cobalt (III) acetylacetonate were measured from 308.2 to 343.2 K over the pressure range from 9.0 to 40.0 MPa at infinite dilution in supercritical carbon dioxide using the chromatographic impulse response method. The effects of pressure, temperature, density, and viscosity on D12 values were examined. It was observed that the D12 values of palladium(II) acetylacetonate and cobalt (III) acetylacetonate were larger than those of lipids with similar molecular weights, such as arachidonic acid and monoolein, respectively. Furthermore, the measured D12 data of each metal acetylacetonate were well correlated by the hydrodynamic equation D12/T as a function of carbon dioxide viscosity.
Compounds
# Formula Name
1 C10H14O4Pd palladium bis(2,4-pentanedionate)
2 C15H21CoO6 cobalt tris(acetylacetonate)
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
  • 3
  • 1
  • Binary diffusion coefficient, m2/s ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Gas
  • Crystal - 1
  • Chromatographic impulse response method
  • 125
  • POMD
  • 3
  • 2
  • Binary diffusion coefficient, m2/s ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Gas
  • Crystal - 2
  • Chromatographic impulse response method
  • 38