Microwave Irradiation Synthesized Cobalt-Loaded Nitrogen-Doped Active Carbon as an Efficient Catalyst for Selective Oxidation of Ethylbenzene

7th Annual International Conference on Materials Science and Engineering

Zhan, H.J.^1^2 ; Yang, W.H.^1 ; An, M.Q.^1 ; Zeng, N.^1 ; Hu, Y.R.^1 ; Ma, X.T.^1 ; Zhao, L.^1^2

Jingchu University of Technology, Jingmen

448000, China^1

Hubei Key Laboratory of Drug Synthesis and Optimization, Jingmen

448000, China^2

关键词: Catalytic performance;    Dicyanodiamide;    Efficient catalysts;    Ion impregnation;    Nitrogen sources;    Nitrogen-doped carbons;    Selective oxidation;    Solvent free conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012004/pdf
DOI  :  10.1088/1757-899X/562/1/012004

来源: IOP

【 摘 要 】

Microwave irradiation technology was used to dope nitrogen on the active carbon using dicyanodiamide as nitrogen source. The obtained nitrogen-doped active carbon was then modified by an ion impregnation method to load cobalt ions. The as-prepared cobalt-loaded nitrogen-doped active carbon (Co-N-AC) was characterized by techniques such as XRD, SEM, XPS, EA and AAS and the catalytic performance was evaluated via the selective oxidation of ethylbenzene under solvent-free condition using molecular oxygen as oxygen source. The results showed that 23.2 mol% conversion of ethylbenzene and 95.7% selectivity to acetophenone was obtained over 3%Co-N-AC, in which the excellent catalytic performance of the catalysts may be attributed to the stable doped N, the highly dispersed Co on the surface of AC and the structure of Co-N bond.