Hydrogenations in Carbon Dioxide-expanded Cyclohexane

摘要

In the present work, the volume expansions of cyclohexane in compressed CO{sub}2 has been examined at a low temperature. The volume of cyclohexane could be expanded very strikingly at the pressure near critical point of CO{sub}2. The hydrogenations of styrene and citral were investigated in CO{sub}2-expanded cyclohexane, comparing with cyclohexane a higher reaction rate was obtained in the CO{sub}2-expanded cyclohexane. Both the reaction rate and product selectivity depended on the variation of CO{sub}2 pressure.