期刊
NEW JOURNAL OF CHEMISTRY
卷 45, 期 36, 页码 16469-16476出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nj02548a
关键词
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资金
- National Natural Science Foundation of China [21872045, 21975069]
- Natural Science Foundation of Hunan Province [2020JJ4169]
- Key Project of Research and Development Plan of Hunan Province [2019SK2071]
Nitrogen-doped carbon materials with hierarchical porous structures have been attracting attention for their catalytic properties. In this study, metal-free and N-rich porous carbon catalysts were synthesized by a one-step activation-pyrolysis process, with NPC-10 showing the best catalytic performance. The catalysts were characterized using various techniques, demonstrating high surface areas and efficient catalytic activity for the selective oxidation of ethylbenzene.
Nitrogen-doped carbon materials with hierarchical porous structures have attracted huge attention in the field of catalysis owing to their special structures and properties in past few decades. In this study, a series of metal-free and N-rich porous carbon catalysts (NPCs) were synthesized by a one-step activation-pyrolysis process. The catalytic performance of NPCs obtained from using bean curd as the carbon and nitrogen precursors and activated via pyrolysis in a nitrogen atmosphere with different amounts of K2CO3 was investigated for the selective oxidation of ethylbenzene. The catalysts were characterized using a series of techniques, such as N-2 adsorption-desorption isotherms, Raman spectroscopy, TEM, SEM, and XPS. The results presented that the as-prepared samples have specific surface areas as high as 1459 m(2) g(-1). Furthermore, NPC-10 displayed the optimal catalytic performance among the catalysts. The ethylbenzene conversion of 96.2% over NPC-10 with a selectivity to acetophenone of 97.0% is even comparable to the results of some metal-doped catalysts, which may be attributed to the hierarchical porous structures and plenty of C-N-X active sites. This work provides a facile and novel strategy for the construction of metal-free and N-rich carbon materials with excellent catalytic activity for the selective oxidation of ethylbenzene.
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