Novel HBD-Containing Zn (dobdc) (datz) as efficiently heterogeneous catalyst for CO_(2) chemical conversion under mild conditions  

作　　者：Jianwen Lan Ye Qu Ping Xu Jianmin Sun 

机构地区：[1]State Key Laboratory of Urban Water Resource and Environment,MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin,150080,China

出　　处：《Green Energy & Environment》2021年第1期66-74,共9页绿色能源与环境（英文版）

基　　金：the National Natural Science Foundation of China(21972034,21673060);the State Key Lab of Urban Water Resource and Environment of Harbin Institute of Technology(HIT2019DX12).

摘　　要：A novel Zn-based metal–organic framework Zn(dobdc)(datz)[Zn_(2)(H2dobdc)(datz)2$1.5DMF]with plentiful hydrogen bond donors(HBD)groups was facilely synthesized from mixed ligands.The dual activation of metal Zn sites and HBD groups for epoxides by forming Zn–O adduct and hydrogen bonds facilitated the ring-opening of epoxide substrate,which is critical for the subsequent CO_(2) fixation.Also,the existence of micropores and N-rich units in Zn(dobdc)(datz)afforded affinity towards CO_(2),which is beneficial to further improvement on catalytic CO_(2) conversion performance.Satisfactorily,Zn(dobdc)(datz)/Bu4NBr system was proved efficient heterogeneous catalyst for the CO_(2) cycloaddition with epoxides,and 98%propylene carbonate yield was obtained under mild conditions(80C,1.5 MPa and solvent-free).In addition,Zn(dobdc)(datz)/Bu4NBr exhibited remarkable versatility to different epoxides and could be completely recycled over six runs with high catalytic activity.The highly stable,easily recycle and solvent-free Zn-based MOF reported here displays eco-friendly and efficient performance to CO_(2)conversion.

关 键 词：Heterogeneous Zn-MOF catalyst HBD groups CO_(2)conversion High versatility and recyclability Mild conditions 

分 类 号：X701[环境科学与工程—环境工程] TQ426[化学工程]