Journal
RSC ADVANCES
Volume 5, Issue 124, Pages 102508-102515Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra17118k
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Funding
- National Natural Science Foundation of China [21303069]
- Jilin province [20150520013JH]
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Nano cobalt oxide particles supported on ordered mesoporous carbon CMK-3 (CMK: carbon material from Korea) were prepared by a hydrothermal synthesis method. The catalysts were characterized by various characterization methods such as XRD, FT-IR, TEM, FESEM, N-2 adsorption and desorption, XPS, Raman and ICP-AES, which indicated that the size of the cobalt oxide nanoparticles was estimated to be similar to 2 nm and that they were uniformly dispersed on CMK-3. The approach obtained smaller and narrow distributed cobalt oxide nanoparticles which was the key to complete the reaction with 82.1% conversion and 97.7% benzaldehyde selectivity within 6 h. The average TOF of Co3O4/CMK-3 can reach as high as 25.4 h(-1) in the initial two hours, which was far higher than that of the unsupported nano Co3O4 (less than 1.0 h(-1)) and so far reported cobalt-based catalysts (e.g. 1.34 h(-1) for Co3O4/RGON). In addition, the catalytic activity of Co3O4/CMK-3 was not obviously deteriorated after 4 runs.
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