| Cu/SO_4~(2-)/TiO_(2-)Al_2O_3催化剂的制备及其催化性能研究 |
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| 引用本文： | 郭锡坤,林树东,谢平平.Cu/SO_4~(2-)/TiO_(2-)Al_2O_3催化剂的制备及其催化性能研究[J].汕头大学学报(自然科学版),2007,22(4):71-75,80. |
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| 作者姓名： | 郭锡坤 林树东 谢平平 |
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| 作者单位： | 汕头大学化学系,广东,汕头,515063 |
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| 摘 要： | 采用共沉淀法制备复合载体TiO2-Al2O3,并采用SO42-进行改性,然后负载上铜,制成Cu/SO42-/TiO2-Al2O3催化剂.借助红外光谱、X射线衍射等方法,研究该催化剂性能与结构的关系.催化性能的测试结果表明:Cu/SO42-/TiO2-Al2O3对于富氧条件下丙烯选择性还原NO反应具有良好的催化活性和水热稳定性,在275℃能使NO转化率高达83%.添加Ti不影响-γAl2O3的晶相结构,添加SO42-能与钛形成具有超强酸的结构,从而能够有效促使Cu/SO42-/TiO2-Al2O3催化性能的提高.
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| 关 键 词： | TiO2-Al2O3 SO42-改性 选择性还原 NO 富氧 |
| 文章编号： | 1001-4217（2007）04-0071-05 |
| 收稿时间： | 2007-06-27 |
| 修稿时间： | 2007-06-27 |
Preparation of Cu/SO42-/TiO2-Al2O3 and Its Catalytic Properties for Selective Reduction of NO by Propylene |
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| GUO Xi-kun,LIN Shu-dong,XIE Ping-ping.Preparation of Cu/SO42-/TiO2-Al2O3 and Its Catalytic Properties for Selective Reduction of NO by Propylene[J].Journal of Shantou University(Natural Science Edition),2007,22(4):71-75,80. |
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| Authors: | GUO Xi-kun LIN Shu-dong XIE Ping-ping |
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| Institution: | Department of Chemistry, Shantou University, Shantou 515063, Guangdong, China |
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| Abstract: | The composite support TiO2-Al2O3 was prepared by co-precipitation and modified with SO42-followed by loading with Cu2+,then the Cu / SO42-/ TiO2-Al2O3 was made.The relationship between the structure and the properties of the Cu / SO42-/ TiO2-Al2O3 catalyst was explored by means of infrared spectroscopy,X-ray diffraction and so on.The results showed that Cu / SO42-/ TiO2-Al2O3 catalyst has a good catalytic activity and hydrothermal stability in the selective reduction of NO with propylene in excess oxygen condition.The addition of Ti doesn't influence the crystalline phase structure of γ-Al2O3;the addition of SO42-can lead to the result that SO42-and Ti form the structure of super-acid,accordingly improve the catalytic activity of Cu / SO42-/ TiO2-Al2O3 catalyst efficiently. |
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| Keywords: | TiO2-Al2O3 NO |
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