|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|201086||460533||2016||7 صفحه PDF||سفارش دهید||دانلود رایگان|
Solubility of flavone, 6-methoxyflavone and anthracene in supercritical CO2 with an ethanol co-solvent ranging from 0.05 to 0.40 were measured at 333 K and 22.0 MPa. Solubility of each compound increased with increasing mole fraction of ethanol. Solubility data were correlated with Chrastil equation considering a relationship between fluid density and solubility and compared with newly proposed relations that use an entropy-based solubility parameter (SSP). Among proposed relations, one relation taking temperature dependence into consideration, that included two fitting parameters had absolute relative deviation (ARD) of 3.9% compared to the experimental data and were much more reliable than a relation not taking temperature dependence into consideration within ARD of 7.6%. The expression similar to Chrastil model that included three fitting parameters and considered SSP was the best ARD within 3.6% among the proposed relations. From these correlation results, the SSP can be applied to determine the solubility of substances at high pressure with multicomponent solvent mixtures.
Journal: Fluid Phase Equilibria - Volume 425, 15 October 2016, Pages 65–71