Effect of water vapor on the CO and CH4 catalytic oxidation over CeO2-MOx （M=Cu, Mn, Fe, Co, and Ni） mixed oxide
来源期刊：JOURNAL OF RARE EARTHS2010年第5期
论文作者：乔东升 卢冠忠 郭耘 王艳芹 郭杨龙
文章页码：742 - 746
摘 要：CeO2-MOx （M=Cu, Mn, Fe, Co, and Ni） mixed oxide catalysts were prepared by a citric acid complexation-combustion method. CeO2-MOx solid solutions could be formed with M cations doping into CeO2 lattice, while NiO and Co3O4 phases were detected on the surface of CeO2-NiO and CeO2-Co3O4 by Raman spectroscopy. The presence of M in CeO2 could obviously promote its catalytic activity for CH4 catalytic combustion and CO oxidation. Among the prepared samples, CeO2-CuO exhibited the best performance for CO oxidation. The addition of water vapor could obviously inhibit the catalytic performance of CeO2-MOx for CH4 combustion and CO oxidation, and CeO2- NiO showed good durability for CH4 wet combustion, that is, T50 was 528 °C when 20% water vapor was added in the reaction stream.
乔东升，卢冠忠，郭耘，王艳芹，郭杨龙
Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, East China University of Science and Technology
摘 要：CeO2-MOx （M=Cu, Mn, Fe, Co, and Ni） mixed oxide catalysts were prepared by a citric acid complexation-combustion method. CeO2-MOx solid solutions could be formed with M cations doping into CeO2 lattice, while NiO and Co3O4 phases were detected on the surface of CeO2-NiO and CeO2-Co3O4 by Raman spectroscopy. The presence of M in CeO2 could obviously promote its catalytic activity for CH4 catalytic combustion and CO oxidation. Among the prepared samples, CeO2-CuO exhibited the best performance for CO oxidation. The addition of water vapor could obviously inhibit the catalytic performance of CeO2-MOx for CH4 combustion and CO oxidation, and CeO2- NiO showed good durability for CH4 wet combustion, that is, T50 was 528 °C when 20% water vapor was added in the reaction stream.
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