物理化学学报 >> 1999, Vol. 15 >> Issue (06): 506-511.doi: 10.3866/PKU.WHXB19990605

研究论文 上一篇    下一篇

La2CuO4的制备及其对催化消除NO活性的影响

刘钰, 杨向光, 刘玉敏, 吴越   

  1. 中国科学院长春应用化学研究所，长春 130022
  • 收稿日期:1998-08-17 修回日期:1998-12-04 发布日期:1999-06-15
  • 通讯作者: 吴越

Study on the Synthesis of Mixed Oxide La2CuO4 and the Effect on the Catalytic Activity to Catalytic Removal of NO

Liu Yu, Yang Xiang-Guang, Liu Yu-Min, Wu Yue   

  1. Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022
  • Received:1998-08-17 Revised:1998-12-04 Published:1999-06-15
  • Contact: Wu Yue

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摘要：

用四种制备方法：柠檬酸络合爆炸法，聚乙二醇凝胶法，聚丙烯酰胺凝胶法，DTPA络合法合成了La2CuO4. 比较了四种方法的特点及其对La2CuO4结构的影响，并对所得La2CuO4在NO-CO反应中的催化活性的影响进行了研究．结果发现聚乙二醇凝胶法和DTPA络合法有利于形成好的晶形，而聚乙二醇凝胶法和聚丙烯酰胺凝胶法对NO-CO反应有较好的活性，这是由于不同制备方法得到的样品中的缺陷的种类和含量不同所致.

关键词: 制备方法, 复合氧化物, 催化消除NO

Abstract:

The mixed oxide La2CuO4 was synthesized by four different methods and characterized with XRD, BET, TEM and low angle XRD. The effect of the synthetic method on the crystal structure, crystal size, surface area and catalytic activity to NO-CO reaction were studied. The results showed that the samples derived from different methods exhibited different activity to NO-CO reaction, the reason may be that the concentration and type of oxygen defect were different when the synthetic methods were different.

Key words: Mixed oxide, Crystal structure, Catalytic activity to NO-CO