Solubilities of methyl oleate, oleic acid, oleyl glycerols, and oleyl glycerol mixtures in supercritical carbon dioxide

1991/02/01 by William B. Nilsson, Erich J. Gauglitz, E. J. Gauglitz +2 · 2 citations
Engineering · Chemical Engineering · Chemistry · #Phase Equilibria and Thermodynamics #Thermodynamic properties of mixtures #Chemical Thermodynamics and Molecular Structure

paper · doi:10.1007/bf02662323

Abstract

Solubility isotherms for oleic acid and methyl oleate as well as mono‐, di‐, and trioleylglycerol (MO, DO, and TO) in supercritical fluid CO 2 at 50 and 60°C are reported. Partition coefficients for quaternary (MO‐DO‐TO‐CO 2 ) mixtures were obtained at 60°C at pressures ranging from 172 to 309 bar. Data indicate that diolein, and especially monoolein, exhibit positive deviation from ideal behavior, possibly due to intermolecular hydrogen bonding. Supercritical fluid CO 2 appears to be a good media for removal of mono‐ and diacylglycerol by‐products from synthetic triglyceride reaction mixtures at moderate temperatures.

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