Abstract
The transesterification between isoamyl acetate and ethanol in supercritical (SC) CO 2, 1- n-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF 6], a room temperature ionic liquid), and in CO 2+[bmim][PF 6] mixed solvent was studied at 65.0 °C and different pressures. p-Xylenesulfonic acid (p-TSA) was used as the catalyst. Results showed that the phase behavior of the reaction system affects the equilibrium conversion of the reaction in SC CO 2 and CO 2+[bmim][PF 6] considerably. The mixtures of SC CO 2 and ionic liquids, which are environmental benign solvents, may have potential applications in tuning the equilibrium conversions.
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