燃料化学学报2012，Vol.40Issue(2)：229-234,6.
Co3O4/CeO2CO氧化的原位红外光谱研究
In situ FT-IR study on CO oxidation over Co3O4/CeO2 catalyst
摘要
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.关键词
Co3O4/CeO2/CO氧化/FT-IR/吸附Key words
Co3O4/CeO2/ CO oxidation/ FT-IR/ adsorption分类
化学化工引用本文复制引用
邵建军,朱锡,张永坤,王明贵..Co3O4/CeO2CO氧化的原位红外光谱研究[J].燃料化学学报,2012,40(2):229-234,6.基金项目
中国博士后科学基金(20100471808). （20100471808）
