期刊
CCS CHEMISTRY
卷 2, 期 1, 页码 616-622出版社
CHINESE CHEMICAL SOC
DOI: 10.31635/ccschem.019.20190040
关键词
Bronsted acid-base catalyst; linker installation; single-crystal transformation; metal-organic frameworks
资金
- National Key Research and Development Program of China [2018YFA0208600]
- National Natural Science Foundation of China [21871267, 21802142, 51572260]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH045]
A Bronsted acid-base bifunctional metal-organic framework (MOF) catalyst, PCN-700-AB [A = Bronsted acid site, TPDC-(COOH)(2) [(1,1':4',1-terphenyl)-2,2,4,4tetracarboxylic acid] and B = Bronsted basic site, BDC-NH2], was designed precisely and synthesized successfully through sequential installation of Bronsted acid and base functionalities in a crystalline zirconium (Zr)-MOF. The installation underwent single-crystal-to-singlecrystal transformation throughout the process; hence, the structure of the bifunctional catalyst could be characterized accurately via single-crystal X-ray crystallography. The bifunctional MOF catalyst obtained exhibited excellent acid-base catalytic activity for a cascade of one-pot deacetalization-Knoevenagel condensation reaction. The work presented here could be considered as a promising solution to incorporate multifunctional components readily, especially the hostile aspects, into one MOF structure.
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