| Pd/Al2O3催化剂的制备及其在对氨基苯酚合成中的应用 |
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| 引用本文： | 董娟,马振叶,陈日志,邢卫红.Pd/Al2O3催化剂的制备及其在对氨基苯酚合成中的应用[J].工业催化,2007,15(6):62-65. |
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| 作者姓名： | 董娟 马振叶 陈日志 邢卫红 |
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| 作者单位： | 南京工业大学膜科学技术研究所，江苏 南京210009 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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国家自然科学基金
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江苏省博士后科学基金 |
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| 摘 要： | 用等体积浸渍法制备了Pd/Al2O3催化剂。采用ICP、XRD、HRTEM和XPS等对催化剂的组成和形貌进行表征。结果表明，Pd粒子均匀分布在Al2O3的表面，粒径约为5 nm。在对硝基苯酚催化加氢制备对氨基苯酚的反应中，对催化剂的催化性能进行了考察。Pd/Al2O3催化剂的催化活性随着Pd负载量的增大而增大；其与市售的骨架镍、纳米镍以及2%Pd/C相比，显现了优异的催化活性；Pd/Al2O3具有高的催化选择性；Pd/Al2O3的催化活性稳定性明显优于骨架镍；随着使用次数的增加，Pd/Al2O3的催化活性有所降低，这可能是因为Pd粒子的团聚。
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| 关 键 词： | 钯 氧化铝 对硝基苯酚 加氢 负载型催化剂 |
| 文章编号： | 1008-1143（2007）06-0062-04 |
| 修稿时间： | 2007-02-22 |
Preparation of Pd/Al2O3 catalysts and its application in synthesis of p-aminophenol |
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| DONG Juan,MA Zhenye,CHEN Rizhi,XING Weihong.Preparation of Pd/Al2O3 catalysts and its application in synthesis of p-aminophenol[J].Industrial Catalysis,2007,15(6):62-65. |
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| Authors: | DONG Juan MA Zhenye CHEN Rizhi XING Weihong |
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| Affiliation: | Membrane Science & Technology Research Center, Nanjing University of Technology, Nanjing 210009, Jiangsu，China |
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| Abstract: | Pd/Al2O3 catalysts were prepared by isometric impregnation method and characterized by ICP,XRD,HRTEM and XPS.It was shown that Pd particles distributed on surface of Al2O3 uniformly,with particle size of about 5 nm.Catalytic properties of Pd/Al2O3 catalysts were investigated for hydrogenation of p-nitrophenol to p-aminophenol.The results showed that activity of Pd/Al2O3 increased with Pd loadings;Pd/Al2O3 exhibited higher catalytic activity than Raney nickel,nanosized nickel and 2%Pd/C catalysts,with higher selectivity and activity stability.Activity of Pd/Al2O3 declined with repeated use,which might be due to the aggregation of Pd particles. |
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| Keywords: | palladium catalyst p-nitrophenol hydrogenation |
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