CO oxidation over CuO catalysts supported on CeO_2-ZrO_2 prepared by microwave-assisted co-precipita

• 作 者: 杨志强 毛东森 郭晓明 卢冠忠
• 机 构: Research Institute of Applied Catalysis,School of Chemical and Environmental Engineering,Shanghai In
• 出 处: Journal of Rare Earths
• 发表日期: 2014年02期
• 关键词: microwave impregnation heating attributed prepare dispersed crystalline sizes pr

CeO2-ZrO2 mixed oxide(Ce0.6Zr0.4O2) prepared by microwave-assisted heating co-precipitation was used as a support to prepare a series of CuO/Ce0.6Zr0.4O2 catalysts with various CuO contents(0 wt.%–15 wt.%) via the method of incipient-wetness impregnation.The obtained CuO/Ce0.6Zr0.4O2 samples were characterized by N2 adsorption,XRD,Raman,TEM and H2-TPR technologies,and their catalytic activities for CO oxidation were investigated.The results showed that the activity of CuO/Ce0.6Zr0.4O2 catalyst was strongly influenced by the content of CuO,and the catalyst with 10 wt.% CuO exhibited the best catalytic activity in CO oxidation,which could be attributed to the high dispersion and reducibility of CuO,and high oxygen vacancy concentration in the catalyst.

CeO2-ZrO2 mixed oxide (Ce0.6Zr0.4O2) prepared by microwave-assisted heating co-precipitation was used as a support to prepare a series of CuO / Ce0.6Zr0.4O2 catalysts with various CuO contents (0 wt.% - 15 wt.%) via the method of incipient-wetness impregnation. The obtained CuO / Ce0.6Zr0.4O2 samples were characterized by N2 adsorption, XRD, Raman, TEM and H2-TPR technologies, and their catalytic activities for CO oxidation were investigated. The results showed that the activity of CuO / Ce0.6Zr0.4O2 catalyst was strongly influenced by the content of CuO, and the catalyst with 10 wt.% CuO showed the best catalytic activity in CO oxidation, which could be attributed to the high dispersion and reducibility of CuO, and high oxygen vacancy concentration in the catalyst.