| 高储氧能力的Ce—Zr—La—Y—AI储氧材料的制备 |
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| 引用本文： | 刘蕾,童硕,雷光,廖宏鹏,万超,周传雄,梅付名.高储氧能力的Ce—Zr—La—Y—AI储氧材料的制备[J].湖北化工,2012(3):43-47. |
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| 作者姓名： | 刘蕾 童硕 雷光 廖宏鹏 万超 周传雄 梅付名 |
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| 作者单位： | [1]华中科技大学化学与化工学院,湖北武汉430074 [2]湖北航特科技有限责任公司,湖北荆门448035 |
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| 摘 要： | 采用共沉淀法制备了多组分储氧材料ce0.5 Zr0.15 Y0.075 La0.075 O1.825。在以氨水和碳酸铵为共沉淀剂、聚乙二醇为表面活性剂、pH值约10．O、H202与Ce的摩尔比为1：1、聚乙二醇与氧化物的质量比为1：1、陈化温度为90℃的条件下，500℃煅烧时储氧材料的储氧量达587．0μmo1．g-1，1000℃煅烧时储氧量达399．9μmol·g-1。老化样品的储氧量远高于摩托车欧Ⅲ排放标准中对三效催化剂中储氧材料储氧性能的要求，且该储氧材料的储／放氧性能稳定。
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| 关 键 词： | 铈锆储氧材料 尾气净化催化剂 复合氧化物 储氧能力 |
Preparation of Ce-Zr-La-Y-AI Oxygen Storage Materials with High Oxygen Storage Capacity |
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| LIU Lei,TONG Shuo,LEI Guang,LIAO Hong-peng,WAN Chao,ZHOU Chuan-xiong,MEI Fu-ming.Preparation of Ce-Zr-La-Y-AI Oxygen Storage Materials with High Oxygen Storage Capacity[J].Hubei Chemical Industry,2012(3):43-47. |
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| Authors: | LIU Lei TONG Shuo LEI Guang LIAO Hong-peng WAN Chao ZHOU Chuan-xiong MEI Fu-ming |
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| Affiliation: | ( School of Chemistry ＆ Chemical Engineering, Huazhong University of Science ＆ Technology, Wuhan 430074,China ; Hubei Hangte Science ＆ Technology Limited Coorperation, J ingmen 448035 ,China) |
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| Abstract: | The multi-component oxygen storage material （OSM） Ce0. 2 Zr0.12 Y0. 072 La0. 072 A10. 2 O1.825 was prepared by coprecipitation method. When aqueous ammonia and ammonium carbonate were used as coprecipitation agents,polyethylene glycol （PEG） as surfactant,pH value was about 10.0,molar ratio of H2O2 to Ce was 1 · 1, mass ratio of PEG to oxide was 1 ： 1 and aging temperature was 90 °C ,the oxygen storage capacity（OSC） for OSM calcined at 500 °C was as high as 587.0 btmol · g-1 ,while 399.9μmol· g-1 for OSM calcined at 1000 °C. The OSC for aged OSM was greater than the requirement value on OSM in three-way catalyst of motorcycle for Euro HI standard. This OSM was stable for storage and discharge of oxygen. |
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| Keywords: | Ce-Zr oxygen storage material catalyst for exhaust gas composite oxide oxygen storage capacity |
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