Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Supercritical carbon dioxide-induced phase changes in (ionic liquid, water and ethanol mixture) solutions: Application to biphasic catalysis.
AU - Najdanovic-Visak, Vesna
AU - Serbanovic, A
AU - Esperanca, JMSS
AU - Guedes, HJR
AU - Rebelo, LPN
AU - da Ponte, MN
PY - 2003/4/14
Y1 - 2003/4/14
N2 - The best of both worlds: Phase changes in ionic liquid + water systems, induced by addition of ethanol and supercritical carbon dioxide, allow reaction cycles to proceed as depicted, combining the high rates of one-phase conditions with easy separation of products; characteristic of biphasic catalysis. The (usually slow) epoxidation of isophorone by hydrogen peroxide, catalysed by sodium hydroxide, was rapidly carried out in these conditions, with complete recovery of the reaction product by supercritical CO2 decompression.
AB - The best of both worlds: Phase changes in ionic liquid + water systems, induced by addition of ethanol and supercritical carbon dioxide, allow reaction cycles to proceed as depicted, combining the high rates of one-phase conditions with easy separation of products; characteristic of biphasic catalysis. The (usually slow) epoxidation of isophorone by hydrogen peroxide, catalysed by sodium hydroxide, was rapidly carried out in these conditions, with complete recovery of the reaction product by supercritical CO2 decompression.
KW - PLUS ETHANOL
KW - high-pressure chemistry
KW - biphasic catalysis
KW - CO2
KW - ionic liquids
KW - supercritical fluids
KW - carbon dioxide
U2 - 10.1002/cphc.200300663
DO - 10.1002/cphc.200300663
M3 - Journal article
VL - 4
SP - 520
EP - 522
JO - ChemPhysChem
JF - ChemPhysChem
SN - 1439-4235
IS - 5
ER -