期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 34, 页码 12079-12084出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201501206
关键词
carbon dioxide uptake; covalent organic framework; hydrogen storage; porous material; selectivity
资金
- National Natural Science Foundation of China [51473064, 51203058, 21304022, 21404010]
- Frontiers of Science and Interdisciplinary Innovation Project of Jilin University [450060481015]
A azine-linked covalent organic framework, COF-JLU2, was designed and synthesized by condensation of hydrazine hydrate and 1,3,5-triformylphloroglucinol under solvothermal conditions for the first time. The new covalent organic framework material combines permanent micropores, high crystallinity, good thermal and chemical stability, and abundant heteroatom activated sites in the skeleton. COF-JLU2 possesses a moderate BET surface area of over 410m(2)g(-1) with a pore volume of 0.56cm(3)g(-1). Specifically, COF-JLU2 displays remarkable carbon dioxide uptake (up to 217mgg(-1)) and methane uptake (38mgg(-1)) at 273K and 1bar, as well as high CO2/N-2 (77) selectivity. Furthermore, we further highlight that it exhibits a higher hydrogen storage capacity (16mgg(-1)) than those of reported COFs at 77K and 1bar.
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