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	Cobalt and Copper Composite Oxides as Efficient Catalysts for Preferential Oxidation of CO in H-2-Rich Stream
	Li, Debing ; Liu, Xianhong ; Zhang, Qinghong ; Zhang QH(张庆红) ; Wang, Ye ; Wang Y(王野) ; Wan, Huilin ; Wan HL(万惠霖)
	2008-11
关键词	Co-Cu composite oxide CO oxidation Co3O4 Preferential oxidation of CO
英文摘要	A series of Co-Cu composite oxides with different Co/Cu atomic ratios were prepared by a co-precipitation method. XRD, N-2 sorption, TEM, XPS, H-2-TPR, CO-TPR, CO-TPD and O-2-TPD were used to characterize the structure and redox properties of the composite oxides. Only spinel structure of Co3O4 phase was confirmed for the Co-Cu composite oxides with Co/Cu ratios of 4/1 and 2/1, but the particle sizes of these composite oxides decreased evidently compared with Co3O4. These composite oxides could be reduced at lower temperatures than Co3O4 by either H-2 or CO. CO and O-2 adsorption amounts over the composite oxides were significantly higher than those over Co3O4. These results indicated a strong interaction between cobalt and copper species in the composite samples, possibly suggesting the formation of Cu (x) Co3-x O-4 solid solution. For the preferential oxidation of CO in a H-2-rich stream, the Co-Cu composite oxides (Co/Cu = 4/1-1/1) showed distinctly higher catalytic activities than both Co3O4 and CuO, and the formation of Cu (x) Co3-x O-4 solid solution was proposed to contribute to the high catalytic activity of the composite catalysts. The Co-Cu composite oxide was found to exhibit higher catalytic activity than several other Co3O4-based binary oxides including Co-Ce, Co-Ni, Co-Fe and Co-Zn oxides.; National Natural Science Foundation of China [20773099]; National Basic Research Program of China [2005CB221408]; Key Scientific Project of Fujian Province of China [2005HZ01-3]; Program for New Century Excellent Talents in Fujian province
语种	英语
出版者	SPRINGER
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1007/s10562-008-9693-0]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Li, Debing,Liu, Xianhong,Zhang, Qinghong,et al. Cobalt and Copper Composite Oxides as Efficient Catalysts for Preferential Oxidation of CO in H-2-Rich Stream[J],2008.
APA	Li, Debing.,Liu, Xianhong.,Zhang, Qinghong.,张庆红.,Wang, Ye.,...&万惠霖.(2008).Cobalt and Copper Composite Oxides as Efficient Catalysts for Preferential Oxidation of CO in H-2-Rich Stream..
MLA	Li, Debing,et al."Cobalt and Copper Composite Oxides as Efficient Catalysts for Preferential Oxidation of CO in H-2-Rich Stream".(2008).

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