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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
Four kinds of preparation methods: citric acid complex explosion method, polyethylene glycol gel method, polyacrylamide gel method and DTPA complexation method were used to synthesize La2CuO4.The characteristics of four methods and their effects on La2CuO4 structure were compared , And the effect of the resulting La2CuO4 on the catalytic activity in the NO-CO reaction was studied. The results showed that polyethylene glycol gel method and DTPA complexation method is conducive to the formation of a good crystal form, and polyethylene glycol gel method and polyacrylamide gel method for NO-CO reaction has better activity, which is due to Different preparation methods to obtain samples of defects in the type and content due to different