The static flow method coupled with gas chromatography analysis was used to measure the solubilities of pure 4-hydroxybenzaldehyde, 3-hydroxybenzaldehyde and their mixture with equal molar ratio in subcritical 1,1,1,2-tetrafluoroethane (R134a) at 308, 318, 328 K and 5.0 15.0 MPa. Comparison of the solubility of each solute in the binary subcritical R134a system with that in the ternary system was made. Furthermore, the effect of molecular structure on the solubility was discussed, and the improvement effect factor (mu) and separation factor (SF) of each solid solute in the ternary system had been investigated. In addition, the solubility enhancement factor (y) had been defined and calculated to compare the solubility of the same solute in subcritical R134a with that in supercritical carbon dioxide. The solubility data of pure solute in the binary subcritical R134a system were correlated by Chrastil and Mendez-Santiago and Teja (MST) models, while the solubility data in the ternary system were correlated by their modified models (Chrastil-G and MST-S), Sovova and its modified models. All the calculated solubility data showed satisfactory agreements with the experimental one.
Compounds
#
Formula
Name
1
C7H6O2
4-hydroxybenzaldehyde
2
C7H6O2
3-hydroxybenzaldehyde
3
C2H2F4
1,1,1,2-tetrafluoroethane
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.