| Cu-Ce-Zr-Ba-O复合氧化物催化剂的制备与三效催化性能 |
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| 引用本文： | 郭锡坤,彭桂芳,陈耀文,陈洁,钟君丽.Cu-Ce-Zr-Ba-O复合氧化物催化剂的制备与三效催化性能[J].汕头大学学报(自然科学版),2010,25(3):44-51. |
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| 作者姓名： | 郭锡坤 彭桂芳 陈耀文 陈洁 钟君丽 |
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| 作者单位： | 1. 汕头大学化学系,广东,汕头,515063
2. 汕头大学中心实验室,广东,汕头,515063 |
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| 基金项目： | 广东省科技计划项目，国家自然科学基金资助项目 |
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| 摘 要： | 采用共沉淀法和等体积浸渍法,分别研制Cu-Ce-Zr-Ba-O复合氧化物催化剂.催化活性的测定结果表明:当Ce与Zr的摩尔比为0.2︰0.8,Ba含量为4%,Cu负载量为5%时,采用等体积浸渍法制备的Cu-Ce-Zr-Ba-O复合氧化物具有更好的三效催化活性,能使C3H6、CO、NO的转化率分别高达99.4%、97.5%、99.9%.XRD和DTA的测试分析结果也表明:Ba的加入会形成铈锆钡(Ce-Zr-Ba)固溶体,有助于提高催化剂的活性和热稳定性,因此所制得的复合氧化物具有良好的三效催化性能.
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| 关 键 词： | Cu-Ce-Zr-Ba-O复合氧化物 三效催化剂 共沉淀法 等体积浸渍法 铈锆钡固溶体 |
Preparation and Three-Way Catalytic Performance of Cu-Ce-Zr-Ba-O Mixed Oxide Catalysts |
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| GUO Xi-kun,PENG Gui-fang,CHEN Yao-wen,CHEN Jie,ZHONG Jun-li.Preparation and Three-Way Catalytic Performance of Cu-Ce-Zr-Ba-O Mixed Oxide Catalysts[J].Journal of Shantou University(Natural Science Edition),2010,25(3):44-51. |
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| Authors: | GUO Xi-kun PENG Gui-fang CHEN Yao-wen CHEN Jie ZHONG Jun-li |
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| Institution: | 1.Department of Chemistry,Shantou 515063,Guangdong,China;2.Central Laboratory,Shantou University,Shantou 515063,Guangdong,China) |
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| Abstract: | Cu-Ce-Zr-Ba-O catalysts are prepared by two different ways of co-precipitation and impregnation.It showed the best three-way catalytic performance when prepared in the way of impregnation with the molar ratio of Ce and Zr of 0.2︰0.8,the content of Ba of 4%（weight） and the content of Cu of 5%（weight）.The conversion of C3H6、 CO and NO can reach to 99.4%,97.5% and 99.9%.The results of XRD and DTA characterization showed some Cu and Ba entered the Ce-Zr solid solution to form a Cu-Ce-Zr-Ba solid solution,which can help to increase the catalytic activity and thermal stability of the Cu-Ce-Zr-Ba-O catalyst. |
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| Keywords: | Cu-Ce-Zr-Ba-O mixed oxides three-way catalyst Co-precipitation incipient wetness impregnation Cerium-Zirconium solid solution |
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