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| Pt-Rh-Pd/CeO2-La2O3/Al2O3催化剂的制备与表征 |
| Preparation and Characterization of Pt-Rh-Pd/CeO2-La2O3/Al2O3 Catalyst |
| Received:September 22, 2013 |
| DOI： |
| 中文关键词: 金属材料 贵金属 稀土 汽车尾气净化催化剂 |
| 英文关键词: metal materials precious metals rare earth automobile exhaust purification catalyst |
| 基金项目: |
| Author Name | Affiliation | E-mail | | KUANG Chengxiu | Department of Chemistry and Environment, Jiujiang University, Jiujiang 332005, Jiangxi, China | kuangchengxiu@sohu.com | | LIU Kangqiang | Department of Chemistry and Environment, Jiujiang University, Jiujiang 332005, Jiangxi, China | | | QIAO Bo | Department of Chemistry and Environment, Jiujiang University, Jiujiang 332005, Jiangxi, China | | | LI Fengyi | Institute of Applied Chemistry, Nanchang University, Nanchang 330471, China | |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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