Solubility of Corosolic Acid in Supercritical Carbon Dioxide and Its Representation Using Density-Based Correlations
| Main Author: | Kumoro, A.C. |
|---|---|
| Format: | Article PeerReviewed application/pdf |
| Terbitan: |
American Chemical Society
, 2011
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| Subjects: | |
| Online Access: |
http://eprints.undip.ac.id/28497/1/ANDRI_ACS__Corosolic_Acid.pdf http://eprints.undip.ac.id/28497/ |
Daftar Isi:
- The solid solubilities of 2R,3β-dihydroxyurs-12-en-28-oic acid (corosolic acid) in supercritical carbon dioxide (SCCO2) have been measured using a dynamic method at (308.15, 313.15, 323.15, and 333.15) K over a pressure range of (8 to 30) MPa. Prior to solubility measurements, the accuracy of the experimental apparatus was examined by measuring solubilities of squalene in SC-CO2 and comparing them with literature. The corosolic acid solubilities ranged from a corosolic acid mole fraction of 3.28 3 10-11 at 333.15 K and 8 MPa to 7.43 3 10-2 at 333.15 K and 30 MPa. The del Valle and Aguilera andMendez-Santiago and Teja (density-based) models were used to correlate the experimental data. The calculated solubilities showed good agreement with the experimental data in the temperature and pressure ranges studied.