| 用于苯催化燃烧的Cu-Mn-O/Ce/γ-Al_2O_3-TiO_2催化剂 |
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| 引用本文： | 李吉花,蒋毅,王娟芸,陈君和,张志强,王奂祎.用于苯催化燃烧的Cu-Mn-O/Ce/γ-Al_2O_3-TiO_2催化剂[J].应用化学,2010,27(2):137-141. |
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| 作者姓名： | 李吉花 蒋毅 王娟芸 陈君和 张志强 王奂祎 |
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| 作者单位： | 1. 中国科学院成都有机化学研究所,成都,610041;中国科学院研究生院,北京
2. 中国科学院成都有机化学研究所,成都,610041 |
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| 基金项目： | 国家发改委重大产业化资助项目 |
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| 摘 要： | 采用不同的浸渍法制备了负载型催化剂Cu-Mn-O/Ce/γ-Al2O3-TiO2,应用X射线粉末衍射(XRD)、低温液氮吸附(BET)、H2程序升温还原(H2-TPR)和X射线光电子能谱(XPS)等测试技术对催化剂进行了表征。在200～500℃考察了催化剂催化燃烧较高浓度的苯(体积分数为3.6%)反应中的催化性能。结果表明,15%CuMn2Ox/Al2O3-TiO2催化剂(CuMn2Ox质量分数为15%)在300℃苯的转化率达到79%,其低温催化活性明显高于单独负载氧化铜或氧化锰的催化剂。而采用共浸渍法制备的催化剂15%CuMn2Ox-15%CeO2/Al2O3-TiO2在300℃苯的转化率达81%,其催化活性明显高于分步浸渍法制备的催化剂。CeO2的添加更利于提高共浸渍法制备的催化剂中各活性组分的分散度和相互作用。
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| 关 键 词： | 铜锰复合氧化物，氧化铈，苯，催化燃烧 |
| 收稿时间： | 2009-01-13 |
| 修稿时间： | 2009-06-16 |
Catalytic Combustion of Benzene over the Cu-Mn-O/Ce/γ-Al_2O_3 Catalysts |
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| LI Ji-Hua,JIANG Yi,WANG Juan-Yun,CHEN Jun-He,ZHANG Zhi-Qiang,WANG Huan-Yi.Catalytic Combustion of Benzene over the Cu-Mn-O/Ce/γ-Al_2O_3 Catalysts[J].Chinese Journal of Applied Chemistry,2010,27(2):137-141. |
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| Authors: | LI Ji-Hua JIANG Yi WANG Juan-Yun CHEN Jun-He ZHANG Zhi-Qiang WANG Huan-Yi |
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| Institution: | LI Ji-Hua a,b,JIANG Yi a,WANG Juan-Yun a,CHEN Jun-He a,ZHANG Zhi-Qiang a,WANG Huan-Yi a,b(aChengdu Organic Chemical Institute,Chinese Academy of Sciences,Chengdu 610041,bGraduate University of the Chinese Academy of Sciences,Beijing) |
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| Abstract: | The catalytic combustion of (φ=3.6%) benzene during 200～500 ℃ was investigated on the supported Cu-Mn-O/Ce/Al_2O_3-TiO_2 catalysts prepared via different wet impregnation methods and characterized by X-ray diffraction(XRD), N2 adsorption at liquid-nitrogen temperature(BET), H_2 temperature programmed reduction(H_2-TPR) and X-ray photoelectron spectroscopy(XPS) techniques. The results show that the 15%CuMn_2O_x/Al_2O_3-TiO_2 catalyst(ω(CuMn_2O_x)=15%) achieving 79% conversion of benzene at 300 ℃ presented higher activity than Cu/Al_2O_3-TiO_2 and Mn/Al_2O_3-TiO_2 catalysts. While, the 15%CuMn_2O_x -15%CeO_2 /Al_2O_3-TiO_2 catalyst obtained by co-impregnation method attaining 81% conversion of benzene at 300 ℃ showed much higher catalytic activity than the catalyst prepared by two step impregnation. The addition of CeO_2 in co-impregnation method can enhance the dispersion and interaction of components. |
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| Keywords: | copper and manganese oxides ceria benzene catalytic combustion |
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