| Effect of cobalt doping on ceria-zirconia mixed oxide： Structural characteristics, oxygen storage/release capacity and three-way catalytic performance |
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| 作者姓名： | 王建强 沈美庆 王军 高继东 马杰 刘双喜 |
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| 作者单位： | [1]Key Laboratory.liar Green Chemical Technology of State Education Ministry, School of Chemical Engineering ＆ Technology, Tianjin University, Tianjin 300072, China [2]China Automotive Technology ＆ Research Center, Tianjin 300162, China |
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| 基金项目： | Foundation item： Project supported by National High-Tech Research and Development Program of China （201 IAA03A405） and the Key Program of Tianjin Natural Science Foundation （09JCZDJC26600） |
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| 摘 要： | The effect of Co doping on ceria-zirconia mixed oxides was investigated for Co 0.1 Ce 0.6 Zr 0.3 O x sample prepared by sol-gel method. The Pd-only three-way catalyst (TWC) was obtained by incipient wetness impregnation with 0.5 wt.% Pd loading. The structural and oxygen handling properties were analyzed by X-ray diffraction (XRD), H 2 -temperature programmed reduction (H 2 -TPR) and the dynamic oxygen storage capacity (DOSC). The introduction of Co into ceria-zirconia lattice strongly modified the mobility of oxygen and enhanced the DOSC performance. Pd-only TWC based on the Co 0.1 Ce 0.6 Zr 0.3 O x support exhibited superior activity for water-gas shift and steam reforming and amplified amplitude of stoichiometric window.
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| 关 键 词： | three-way catalyst stoichiometric window dynamic oxygen storage capacity water-gas shift steam reforming Co doping rare earths |
| 收稿时间： | 2012-01-13 |
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