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A facile fabrication of nanoflower-like Co.sub.3O.sub.4 catalysts derived from ZIF-67 and their catalytic performance for CO oxidation

Liu, Ning ; Tao, Pin ; Jing, Chuwen ; Huang, Wenyuan ; Zhang, Xiaodong ; Wu, Minghong ; Lei, Jianqiu

Journal of materials science, 2018-11, Vol.53 (21), p.15051 [Periódico revisado por pares]

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Título:
A facile fabrication of nanoflower-like Co.sub.3O.sub.4 catalysts derived from ZIF-67 and their catalytic performance for CO oxidation
Autor: Liu, Ning ; Tao, Pin ; Jing, Chuwen ; Huang, Wenyuan ; Zhang, Xiaodong ; Wu, Minghong ; Lei, Jianqiu
Assuntos: Catalysts ; Oxidation-reduction reactions
É parte de: Journal of materials science, 2018-11, Vol.53 (21), p.15051
Descrição: Herein, we reported a facile method for fabricating nanoflower-like Co.sub.3O.sub.4 catalysts via calcination treatment based on ZIF-67. The catalytic performances of the obtained Co.sub.3O.sub.4 catalysts were evaluated for the model reaction of CO oxidation. The results demonstrated that calcination temperature had a strong effect on the structure and catalytic reaction activity of Co.sub.3O.sub.4 catalyst. Co.sub.3O.sub.4 catalyst prepared at 400 °C (Co.sub.3O.sub.4-400) exhibited the optimum catalytic activity with a complete CO conversion temperature of 105 °C. This phenomenon was ascribed to the higher specific surface areas, smaller particle size, unique structure, good low-temperature reduction and higher abundances of surface Co.sup.2+ and adsorbed oxygen species. The addition of 1.0% water vapor had a negative effect on CO oxidation and the prepared Co.sub.3O.sub.4-400 catalyst presented long-term stability.
Editor: Springer
Idioma: Inglês

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