| Cu/Mo/CeO_2-ZrO_2催化剂的制备及其三效催化性能 |
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| 引用本文： | 郭锡坤,章从根,李式伟,陈耀文.Cu/Mo/CeO_2-ZrO_2催化剂的制备及其三效催化性能[J].汕头大学学报(自然科学版),2011,26(3):49-56,62. |
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| 作者姓名： | 郭锡坤 章从根 李式伟 陈耀文 |
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| 作者单位： | 1. 汕头大学理学院化学系,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(2006B36702003); 国家自然科学基金(60971075) |
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| 摘 要： | 以不同沉淀剂制备的CeO2-ZrO2复合氧化物为载体,采用等体积浸渍法制备了Cu/Mo/CeO2-ZrO2催化剂.研究结果表明,当Ce︰Zr的摩尔比为0.65︰0.35,Mo添加量为6%,Cu负载量为5%时,制得的Cu/Mo/CeO2-ZrO2对CO、C3H6和NO的转化具有更好的催化活性,在该催化剂上,CO、C3H6和NO的T50分别为103℃、248℃和244℃,T90分别为189℃、450℃和321℃.Mo的添加能够使催化剂形成稳定的立方晶相固溶体结构,并且使其颗粒更加细化,从而有利于Cu物种高度分散在催化剂表面,提高了催化剂的性能.
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| 关 键 词： | Cu Mo CeO2 ZrO2 共沉淀法 |
Preparation and Performance of Cu/Mo/CeO2-ZrO2 Catalysts |
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| GUO Xi-kun,ZHANG Cong-gen,LI Shi-wei,CHEN Yao-wen.Preparation and Performance of Cu/Mo/CeO2-ZrO2 Catalysts[J].Journal of Shantou University(Natural Science Edition),2011,26(3):49-56,62. |
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| Authors: | GUO Xi-kun ZHANG Cong-gen LI Shi-wei CHEN Yao-wen |
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| Institution: | GUO Xi-kun1,ZHANG Cong-gen1,LI Shi-wei1,CHEN Yao-wen2(1.Department of Chemistry,Shantou University,Shantou 515063,Guangdong,China,2.Central Laboratory,China) |
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| Abstract: | The CeO2-ZrO2 composite support was prepared by different precipitators as the earrier. The Cu/Mo/CeO2-ZrO2 catalyst was prepared by incipient wetness impregnalion with them. The resuhs showed, the Cu/Mo/CeO2-ZrO2 catalyst with Ce：Zr molar ratio of 0.65：0.35, the content Mo of 6% and the content Cu of 5% showed the better catalytic performance. The light-off temperatures for CO, C3Ht, and NO were 103 ℃, 248 ℃ and 244 ℃ respectively. CO could be completely converted above 189 ℃, C3H6 could be completely converted above 450 ℃, and NO could be completely converted above 321 ℃. Mo was added to torm a stable cubic structure of the solid solution, and il makes the catalyst particles smaller. Highly dispersed CuO partieles were formed on the surface of catalyst aml improved the catalytic activity. |
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| Keywords: | Cu Mo Ce02 Zr02 co-precipitation |
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