Journal
APPLIED CATALYSIS A-GENERAL
Volume 591, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2019.117400
Keywords
Carbon foam; Self-foaming; Metal-free catalysts; Selective oxidation of aromatic alkanes; Carbon dioxide-rich ethanolamine; Monolith
Categories
Funding
- National Natural Science Foundation of China [21701103, 21671122]
- Natural Science Foundation of Henan province [162300410175]
- Key Scientific Research Project of Colleges and Universities in Henan [17A150031]
- Henan Normal University Doctoral Research Funds [5101039170150]
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Porous carbon materials have attracted considerable interest as metal-free catalysts. In this study, we report a nitrogen-doped and nanofiber-based porous carbon foam produced via an efficient and facile self-foaming approach and its subsequent pyrolysis; in this approach, carbon dioxide-rich ethanolamine serves as the foaming agent, N source and polymerization catalyst. Meanwhile resorcinol and formaldehyde are used as carbon sources. Carbon dioxide-rich ethanolamine plays a crucial role in the release of gas as well as initiating polymerization on the interfaces of bubbles, which directs the formation of polymer foam. The N-doped carbon foam can be a highly active metal-free heterogeneous catalyst to promote selective oxidation of the benzyl group to the corresponding phenone. In addition, the carbon foams are easily cast with different morphologies. Notably, the prepared carbon foam is fabricated as a monolithic reactor for the oxidation reaction, which also exhibits good catalytic performances in the scale-up experiment.
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