Structure and Catalytic Behavior of CuO-ZrO-CeO2 Mixed Oxides
来源期刊：JOURNAL OF RARE EARTHS2002年第5期
论文作者：陈诵英 王恩过
Key words：rare earths; mixed oxide; CO oxidation; copper oxide;
Abstract: The effect of doping CuO on the structure and properties of zirconia-ceria mixed oxide was studied. The results show that addition of CuO decreases the reduction temperature of ceria, and stabilizes the cubic structure of mixed oxides, and enhances catalytic activity of CuO-ZrO-CeO2 mixed oxides for CO oxidation. Increasing ceria content in the mixed oxides can enhance the catalytic activity, but some impurities such as sulfate make catalytic activity falling. There is little effect of calcination temperature on catalytic activities, implying that these catalysts are effective with good thermal stability.
陈诵英1，王恩过1
(1.Institute of Catalysis, Zhejiang University, Hangzhou 310028,China)
Abstract:The effect of doping CuO on the structure and properties of zirconia-ceria mixed oxide was studied. The results show that addition of CuO decreases the reduction temperature of ceria, and stabilizes the cubic structure of mixed oxides, and enhances catalytic activity of CuO-ZrO-CeO2 mixed oxides for CO oxidation. Increasing ceria content in the mixed oxides can enhance the catalytic activity, but some impurities such as sulfate make catalytic activity falling. There is little effect of calcination temperature on catalytic activities, implying that these catalysts are effective with good thermal stability.
Key words:rare earths; mixed oxide; CO oxidation; copper oxide;
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