In situ FT-IR study on CO oxidation over Co3O4/CeO2 catalyst

SHAO Jian-jun; ZHU Xi; ZHANG Yong-kun; WANG Ming-gui

Volume 40 Issue 02

Feb. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(02): 229-234

SHAO Jian-jun, ZHU Xi, ZHANG Yong-kun, WANG Ming-gui. In situ FT-IR study on CO oxidation over Co3O4/CeO2 catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 229-234.

Citation:

SHAO Jian-jun, ZHU Xi, ZHANG Yong-kun, WANG Ming-gui. In situ FT-IR study on CO oxidation over Co₃O₄/CeO₂ catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 229-234.

SHAO Jian-jun, ZHU Xi, ZHANG Yong-kun, WANG Ming-gui. In situ FT-IR study on CO oxidation over Co3O4/CeO2 catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 229-234.

Citation:

SHAO Jian-jun, ZHU Xi, ZHANG Yong-kun, WANG Ming-gui. In situ FT-IR study on CO oxidation over Co₃O₄/CeO₂ catalyst[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 229-234.

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In situ FT-IR study on CO oxidation over Co₃O₄/CeO₂ catalyst

1.
Post-doctoral Scientific Research Station in 92493 Unit, Chinese People Liberation Army, Dalian 116041, China;
2.
Department of Naval Architecture &|Ocean Engineering, Naval University of Engineering, Wuhan 430033, China;
3.
91439 Unit, Dalian 116041, China

Received Date: 2011-02-11
Rev Recd Date: 2011-06-03
Publish Date: 2012-02-29

Abstract

Abstract

Co₃O₄/CeO₂ catalyst was prepared by co-precipitation-oxidation method. Adsorption of carbon monoxide and the co-adsorption of CO/O₂ over Co₃O₄/CeO₂ sample were investigated. In situ FT-IR analysis of the mechanism in CO oxidation was interpreted over Co₃O₄/CeO₂ sample. Effects of the reaction conditions on the catalytic performance over Co₃O₄/CeO₂ catalyst for carbon monoxide oxidation was investigated at humid and dry conditions. Results indicated that the addition of cerium to the cobalt oxide was beneficial for CO oxidation over Co₃O₄ at humid condition. The formation of carbonate species with reaction on Co₃O₄/CeO₂ composite oxide slightly deactivated the catalyst. When the temperature was as low as 453 K, the dynamic equilibrium of formation and decomposition of carbonate species existed in Co₃O₄/CeO₂ composite oxide catalyst. The carbonate species disappeared above 493 K. The strong interaction between CeO₂ and Co₃O₄ may contribute to the excellent water resistance for low-temperature CO oxidation over Co₃O₄/CeO₂ catalyst at humid condition.
- Co₃O₄/CeO₂,
- CO oxidation,
- FT-IR,
- adsorption

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References(24)

References

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