Abstract
To study the potential of performing hydrogenation reactions in ionic liquid–CO 2 media, the high-pressure phase equilibrium of the ternary system 1-butyl-3-methylimidazolium tetrafluoroborate (bmim[BF 4]) + 4-isobutylacetophenone + carbon dioxide (CO 2) has been investigated. Experiments were performed in the Cailletet apparatus in a temperature range from 278.15 up to 368.15 K while pressures up to 14 MPa were applied. In this system, not only liquid–vapor boundaries were found, but also at high CO 2 concentrations liquid–liquid biphasic equilibrium occurred. 1 1 Additional experiments are in progress. These results will be presented in a subsequent contribution. A comparison between the experimental results of this work, the data collected for the binary system bmim[BF 4] + CO 2 and a ternary system with acetophenone as the solute shows that the type of solute added can dramatically change the phase behavior of the system.
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