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8167320 
Journal Article 
Study on solid solute solubility in supercritical fluids with cosolvent 
Jin, J; Li, Q; Zhang, Z; Yao, X; Yu, E 
2004 
1 
Shiyou Huagong
ISSN: 1000-8144 
33 
5 
441-446 
Chinese 
An expanded liquid model for solubility of solid solutes (benzoic acid, biphenyl, anthracene, etc.) in supercritical fluids was proposed based on the assumption that the supercritical fluid was considered as an expanded liquid. The solubility of 2-hydroxybenzoic acid was measured in supercritical Co2 with and without cosolvents, e.g., cyclohexane and ethanol, within 308.15-328.15 K and 10-24 MPa, by flow method. The expanded liquid model was used to calculate experimental and literature data. The average relative deviations (ARD) were 3.55 and 3.78%, while ARD from Chastil Model and Wilson Equation were 10.86 and 5.59%, respectively. The expanded liquid model has the advantage of rapid iterative speed and fewer physical parameters needed. 
Expanded liquid model; Solid solubility; Supercritical fluids