摘要
Carbon dioxide(CO_(2))utilization and fixation have become one of the most important research areas nowadays due to the increase of global greenhouse effect.Cyclic carbonate,which is widely used in various fields,can be synthesized by fixation of CO_(2) with epoxide in industry.Moreover,the synthesis of cyclic carbonate is a 100%atom economical reaction,which makes it eco-friendly and promising.To enhance the reaction efficiency and safety,a microreaction system was used as the platform for cycloaddition reaction.In this work,tetrabutylammonium bromide(TBAB)was chosen as catalyst,and propylene oxide(PO)as a mode substrate.Interestingly,the addition of water can increase the propylene carbonate(PC)yield and decrease the activation energy considerably,proving water as catalyst promoter for PC synthesis.PC yield and selectivity could reach 91.6%and 99.8%,respectively.The Influence factors and kinetic equation for CO_(2) cycloaddition were obtained as well.
基金
the supports of the National Natural Science Foundation of China(22025801,22108147)
Shui Mu Xue Zhe of Tsinghua University(2020SM056)
China Postdoctoral Science Foundation(2021M691761)for this work。
