Salen-Cu（Ⅱ）@MIL-101（Cr） as an efficient heterogeneous catalyst for cycloaddition of CO2 to epoxides under mild conditions

摘要

A double active center system, namely Salen-Cu（Ⅱ）@MIL-101（Cr）, was successfully synthesized via the“ship in a bottle” approach, which acted as a bifunctional material for both capture and conversion of CO2 in a single process. For the first time, Salen-Cu（Ⅱ）@MIL-101（Cr） catalyst was developed for the synthesis of propylene carbonate from CO2 and propylene oxide under room temperature and ambient pressure with a yield of 87.8% over 60 h. Furthermore, the reaction mechanism was also discussed.