【摘 要】
：
A novel Zn-based metal-organic framework Zn(dobdc)(datz)[Zn2(H2dobdc)(datz)2·1.5DMF]with plentiful hydrogen bond donors(HBD)groups was facilely synthesized fro
【机 构】
：
State Key Laboratory of Urban Water Resource and Environment,MI IT Key Laboratory of Critical Materi
论文部分内容阅读
A novel Zn-based metal-organic framework Zn(dobdc)(datz)[Zn2(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 CO2 fixation.Also,the ex-istence of micropores and N-rich units in Zn(dobdc)(datz)afforded affinity towards CO2,which is beneficial to further improvement on catalytic CO2 conversion performance.Satisfactorily,Zn(dobdc)(datz)/Bu4NBr system was proved efficient heterogeneous catalyst for the CO2 cycloaddition with epoxides,and 98％propylene carbonate yield was obtained under mild conditions(80℃,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 CO2 conversion.
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