20.500.12556/DKUM-27672 Phase equilibria in systems containing [alpha]-tocopherol and dense gas Solubility of ▫$alpha$▫-tocopherol in CO2 and propane was determined at temperatures 303, 313, 333 and 353 K and over a pressure range from 79 to 286 bar for CO2 and 16 to 112 bar for propane. A static-analytic method was applied. The solubility of ▫$alpha$▫-tocopherol in dense CO2 under the conditions investigated was in the range of 0.2-17.0 mg/g CO2. The maximal solubilities of ▫$alpha$▫-tocopherol in propane were approximately up to ten times higher than in CO2 and were in the range from 38.9 to 171.9 mg/g propane. Phase equilibrium data for Milk Thistle seed oil in supercritical CO2 were determined at temperatures 313, 333 and 353 K and pressures ranging from 100 to 300 bar. The oil was previously additionally vitaminized and contained 1.9 wt.% of ▫$alpha$▫-tocopherol and 1.7 wt.% of free fatty acids (FFA). The solubility of oil in CO2 was in the range from 1.3 to 17.9 mg/g CO2. The distribution coefficients of ▫$alpha$▫-tocopherol and FFA between light and heavy phase were determined on a solvent free basis. The obtained separation factors increased with temperature and pressure to approximately 160-200 bar and decreased with a further increase of pressure. chemical processing supercritical fluids phase equilibria separation factors vitamin E CO2 dense gases kemijska procesna tehnika superkritični fluidi fazna ravnotežja separacijski faktor vitamin E CO2 plini visoke gostote true false false Angleški jezik Angleški jezik Neznano 2012-06-01 11:58:15 2012-06-01 11:58:15 2022-04-15 03:45:20 2019-07-10 12:20:00 2003 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.061-987:536.42 7979286 0896-8446 URN:SI:UM:DK:ITJ0VBAA http://dx.doi.org/10.1016/S0896-8446(02)00166-3 1 https://dk.um.si/Dokument.php?lang=slv&id=36988 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0