The co-solubility in supercritical carbon dioxide of 1-butanol, 1-pentanol, 2-ethyl-1-hexanol, or 1-decanol in the presence of 2-ethylhexanoic acid in the pressure range of 100-180 bar and at 313 or 323K was measured. The solubility of these alcohols in the presence of 2-ethylhexanoic acid is lower than in the systems alcohol +CO2 and remains nearly constant in the pressure range of 120-180 bar, with the exception of 1-decanol. The lower selectivities in the ternary systems are explained by strong intermolecular hydrogen bonding between alcohol molecules and 2-ethylhexanoic acid molecules. The FT-IR spectra of mixtures of alcohols and 2-ethylhexanoic acid at a 1:1 mole ratio in the liquid CCl4 confirmed this conclusion.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C4H10O
butan-1-ol
3
C5H12O
pentan-1-ol
4
C8H18O
2-ethyl-1-hexanol
5
C10H22O
decan-1-ol
6
C8H16O2
2-ethylhexanoic acid
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.