Measurement and Correlation of the Solid-Liquid-Gas Equilibria for the Carbon Dioxide + S-(+)-Ibuprofen and Carbon Dioxide + RS-(+/-)-Ibuprofen Systems
The pressure p-temperature T projections of solid-liquid-gas (S-L-G) three-phase coexistence lines for the carbon dioxide + S-(+)-ibuprofen system and the carbon dioxide + RS-(+/-)-ibuprofen system were measured by the first melting point method in which the initial appearance of the liquid phase was observed. The experimental p-T projections of the S-L-G lines for the two systems were quite different from each other. The experimental p-T projections of the S-L-G lines were also correlated by the Peng-Robinson equation of state with a binary interaction parameter introduced into an attraction term. The present model gave good correlation results for all of the experimental S-L-G lines with maximum average absolute relative deviations of 0.14% for the carbon dioxide + S-(+)-ibuprofen system and 0.90% for the carbon dioxide + RS-(+/-)-ibuprofen system.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C7H6O2
benzoic acid
3
C13H18O2
ibuprofen
4
C13H18O2
(S)-2-(4-isobutylphenyl)propanoic 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.