期刊
CHEMSUSCHEM
卷 12, 期 11, 页码 2421-2427出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201900570
关键词
carbon dioxide; carbonates; covalent organic frameworks; heterogeneous catalysis; imidazolium salts
资金
- National Natural Science Foundation of China [U1704251, 21733011, 21773058]
- National Key Research and Development Program of China [2017YFA0403 101]
- 111 project [D17007]
The conversion of CO2 into valuable chemicals is an ideal pathway for CO2 utilization in industry, although the development of highly efficient catalysts remains a challenge. Herein, the design and synthesis of two covalent organic frameworks (COFs) functionalized with imidazolium salts were reported as catalysts for CO2 conversion. The resultant COFs possessed highly crystalline structures, showed high stability and surface area, and contained dense catalytic active sites on the pore walls. They exhibited outstanding catalytic performances for the reaction of CO2 with epoxides without any solvent or cocatalyst under mild conditions and afforded a record turnover number of 495 000. In addition, the COFs could serve as effective catalysts in the reductive reaction of CO2 with amines. The results presented here thus demonstrate the exceptional potential of the functionalized COFs for various challenging CO2 transformations.
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