The equilibrium solubility of o-nitrobenzoic acid in supercritical carbon dioxide with cosolvents was determined with the dynamic method at temperatures of (308, 318, and 328) K and pressures in the range of (10.0 to 21.0) MPa. Ethanol and ethyl acetate were chosen as the cosolvents with a mole fraction of 3.5 %. The equilibrium solubility of o-nitrobenzoic acid can be enhanced by the presence of both cosolvents. The enhancement effects of ethanol and ethyl acetate were compared at 318 K; ethyl acetate showed a better cosolvent effect. The experimental data were correlated by the modified Mendez-Santiago and Teja model and the modified Sovova model. The results showed that the two models were able to reasonably correlate the experimental solubility data.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C7H5NO4
2-nitrobenzoic acid
3
C2H6O
ethanol
4
C4H8O2
ethyl acetate
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.