Abstract
The production of cyclic styrene carbonate from CO2 cycloaddition to styrene oxide, using tetrabutylammonium bromide (TBABr) as catalyst, was investigated. Two different reaction systems, a CO2-rich and an epoxide-rich were studied. Reactions were performed in a visual high pressure cell, at different temperatures (313.2, 333.2, and 353.2 K) and pressures (0.5-18 MPa). High pressure phase behaviour manipulation of the reaction system was explored to shift catalysis from homogeneous to heterogeneous, by changing operation conditions. Styrene carbonate formation was monitored quantitatively by using H-1 NMR spectroscopy. (C) 2015 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 155-159 |
Number of pages | 5 |
Journal | Journal of Supercritical Fluids |
Volume | 100 |
DOIs | |
Publication status | Published - May 2015 |
Keywords
- Carbonates
- CO2
- Epoxides
- High pressure
- Ionic liquids
- IN-SITU FTIR
- IONIC LIQUIDS
- SUPERCRITICAL CO2
- ASYMMETRIC DIHYDROXYLATION
- CYCLIC CARBONATE
- DIOXIDE
- EQUILIBRIUM
- KINETICS
- SYSTEM
- SOLUBILITY