4.7 Article

Novel HBD-Containing Zn (dobdc) (datz) as efficiently heterogeneous catalyst for CO2 chemical conversion under mild conditions

期刊

GREEN ENERGY & ENVIRONMENT
卷 6, 期 1, 页码 66-74

出版社

KEAI PUBLISHING LTD
DOI: 10.1016/j.gee.2019.12.005

关键词

Heterogeneous Zn-MOF catalyst; HBD groups; CO2 conversion; High versatility and recyclability; Mild conditions

资金

  1. National Natural Science Foundation of China [21972034, 21673060]
  2. State Key Lab of Urban Water Resource and Environment of Harbin Institute of Technology [HIT2019DX12]

向作者/读者索取更多资源

A novel Zn-based metal-organic framework with abundant hydrogen bond donors was synthesized and demonstrated efficient CO2 conversion performance through dual activation of metal Zn sites and HBD groups. The material exhibited eco-friendly and highly efficient performance in catalytic CO2 cycloaddition reactions with epoxides.
A novel Zn-based metal-organic framework Zn (dobdc) (datz) [Zn-2(H(2)dobdc) (datz)(2)center dot 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 existence 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 degrees C, 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. (C) 2020, Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

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