Solubilities of 10-Undecenoic acid (cas 112-38-9) and geraniol in supercritical carbon dioxide

Add time:08/22/2019    Source:sciencedirect.com

The solubilities of 10-undecenoic acid and geraniol in supercritical carbon dioxide were measured at 308, 313, 323 and 333 K, and at pressures of 10–18 MPa. Solubilities (in mole fraction) ranged from 0.4 × 10−3 to 17.4 × 10−3 for 10-undecenoic acid and 2.7 × 10−3 to 25 × 10−3 for geraniol, respectively. The AARD was around 11% and 5% for these models for 10-undecenoic acid and geraniol, respectively. The solubilities of both compounds showed retrograde behavior wherein the solubilities decrease with temperature at isobaric conditions. The solubility of geraniol was higher than 10-undecenoic acid at all investigated temperatures and pressures. The data were found to be self consistent based on the Mendez-Santiago model. New models based on association theory using van Laar and Margules activity coefficient models for solute in liquid phase were derived, and used to correlate the solubilities.

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