Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solubilities and partial molar volumes of three bis(2-ethoxyethyl) ethanedioate derivatives in supercritical carbon dioxide

Peng, J.[Jing], Yang, H.-J.[Hai-Jian], Yang, H.[Hongwei]
J. Chem. Thermodyn. 2015, 83, 33-42
ABSTRACT
Three new CO2-philic bis(2-ethoxyethyl) ethanedioate derivatives, bis(2-(2-methoxyethoxy)ethyl) ethanedioate (compound 1), bis(2-(2-ethoxyethoxy)ethyl) ethanedioate (compound 2), and bis(2-(2-butoxyethoxy) ethyl) ethanedioate (compound 3), were designed and synthesized and their solubilities in supercritical carbon dioxide (scCO2) were then measured at different temperatures (313, 323, 333) K over the pressure range (8.9 to 13.9) MPa. The measured solubility data were correlated with five different theoretical semi-empirical models (Chrastil, kJ, SS, MST, JCF) and satisfactory agreements were obtained. The JCF model provided the best fit and the lowest average absolute relative deviation (AARD) varied from (3.58 to 6.80)%. Furthermore, the partial molar volumes of three compounds in the supercritical phase were also calculated according to the Kumar and Johnston theory, and the values were between (19105 and 3510) cm3 mol 1.
Compounds
# Formula Name
1 C12H22O8 bis(2-(2-methoxyethoxy)ethyl) ethanedioate
2 C14H26O8 bis(2-(2-ethoxyethoxy)ethyl) ethanedioate
3 C18H34O8 bis(2-(2-butoxyethoxy)ethyl) ethanedioate
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
  • 1
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 1; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • Closed cell (Static) method
  • 15
  • POMD
  • 4
  • 2
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • Closed cell (Static) method
  • 15
  • POMD
  • 4
  • 3
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 3; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • Closed cell (Static) method
  • 15