| Pt-Rh-Pd/CeO2-La2O3/Al2O3催化剂的制备与表征 |
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| 引用本文： | 旷成秀,刘康强,乔 波,李凤仪.Pt-Rh-Pd/CeO2-La2O3/Al2O3催化剂的制备与表征[J].贵金属,2014,35(3):20-23. |
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| 作者姓名： | 旷成秀 刘康强 乔 波 李凤仪 |
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| 作者单位： | 九江学院化学与环境学院;南昌大学应用化学研究所; |
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| 摘 要： | 用共浸渍法制得了Pt-Rh-Pd/CeO2-La2O3/Al2O3催化剂,采用X射线衍射(XRD)对催化剂进行表征,使用配气测试系统对催化剂的活性进行评价。正交试验结果表明,对CO的氧化,选择最佳催化剂的配比为Pt-Rh-Pd 0.1%,CeO2 5%,La2O3 4%,对NO的还原,其最佳配比为Pt-Rh-Pd 0.1%,CeO2 4%,La2O3 4%。稀土氧化物(La2O3、CeO2)作为助剂,能改善Pt-Rh-Pd/CeO2-La2O3/Al2O3催化剂的催化性能,但不能起主要作用。
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| 关 键 词： | 金属材料 贵金属 稀土 汽车尾气净化催化剂 |
| 收稿时间： | 2013/9/22 0:00:00 |
Preparation and Characterization of Pt-Rh-Pd/CeO2-La2O3/Al2O3 Catalyst |
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| KUANG Chengxiu,LIU Kangqiang,QIAO Bo and LI Fengyi.Preparation and Characterization of Pt-Rh-Pd/CeO2-La2O3/Al2O3 Catalyst[J].Precious Metals,2014,35(3):20-23. |
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| Authors: | KUANG Chengxiu LIU Kangqiang QIAO Bo and LI Fengyi |
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| Affiliation: | Department of Chemistry and Environment, Jiujiang University, Jiujiang 332005, Jiangxi, China;Department of Chemistry and Environment, Jiujiang University, Jiujiang 332005, Jiangxi, China;Department of Chemistry and Environment, Jiujiang University, Jiujiang 332005, Jiangxi, China;Institute of Applied Chemistry, Nanchang University, Nanchang 330471, China |
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| Abstract: | The Pt-Rh-Pd/CeO2-La2O3/Al2O3 catalysts were prepared with method of co-impregnation, and characterized by X-ray diffraction (XRD). Its catalytic activities were evaluated by gas mixing test system. The results of orthogonal experimentsshowed that the best catalyst formula is Pt-Rh-Pd 0.1%, CeO2 5%, La2O3 4% to the oxidation of carbon monoxide, while to the reduction of NO, the best catalyst formula is Pt-Rh-Pd 0.1%, CeO2 4%, La2O3 4%. Rare earth oxides (La2O3, CeO2) as co-catalyst, only can improve catalytic ability of Pt-Rh-Pd/CeO2-La2O3/Al2O3, but do not play critical roles. |
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| Keywords: | metal materials precious metals rare earth automobile exhaust purification catalyst |
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