Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Binary Diffusion Coefficients of Arachidonic Acid Ethyl Esthers, cis-5,8,11,14,17-Eicosapentaenoic Acid Ethyl Esthers, and cis-4,7,10,13,16,19-Docosahexanenoic Acid Ethyl Esthers in Supercritical Carbon Dioxide

Han, Y.[Yisong], Yang, Y.[Yiwen], Wu, P.
J. Chem. Eng. Data 2007, 52, 2, 555-559
ABSTRACT
The binary diffusion coefficients of arachidonic acid ethyl esthers (AA-EE), cis-5,8,11,14,17-eicosapentaenoic acid ethyl esters (EPA-EE), and cis-4,7,10,13,16,19-docosahexaenoic acid ethyl esthers (DHA-EE) in supercritical carbon dioxide were measured at temperatures from 308.15 K to 338.15 K and pressures from 8.42 MPa to 29.95 MPa by the Taylor-Aris capillary peak broadening method. The obtained diffusion coefficients are in the range of (5.54 10-5) cm2as-1 to (13.8 10-5) cm2as-1 with small differences between AA-EE, EPA-EE, and DHAEE. The measured D12 values were fitted with absolute average deviations of less than 2 % by three predictive models: Scheibel, Catchpole-King, and He-Yu-Su.
Compounds
# Formula Name
1 C24H36O2 cis-4,7,10,13,16,19-docosahexaenoic acid ethyl ester
2 C22H34O2 eicosapentaenoic acid, ethyl ester
3 C22H36O2 5,8,11,14-eicosatetraenoic acid, ethyl ester, (all-Z)-
4 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
  • 4
  • 3
  • Binary diffusion coefficient, m2/s ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 3; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Dispersion
  • 48
  • POMD
  • 4
  • 2
  • Binary diffusion coefficient, m2/s ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Dispersion
  • 48
  • POMD
  • 4
  • 1
  • Binary diffusion coefficient, m2/s ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 1; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Dispersion
  • 48