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氨的催化氧化这一实验是中学化学教材中难度较大的一个演示实验,按照中学化学课本中的装置和操作方法,由于用铂丝作催化剂,价格昂贵,一般中学不具备此条件,而且即使用铂丝也很难将此演示实验做成功。很多同志为了做好这个演示实验,进行了一定的探索和改进。如《中学化学教学参考》83年第一期上刊登的于跃同志对这一演示实验的改进,已经获得较好的效果。为了使这个实验更符合课堂演示的要求,我们又做了进一步的改进,现介绍如下: 一、实验原理:
The experiment of catalytic oxidation of ammonia is a difficult demonstration experiment in middle school chemistry textbooks. According to the device and operation method in middle school chemistry textbooks, due to the use of platinum wire as a catalyst, the price is high, and the average secondary school does not have this condition, and that is The use of platinum wire also makes it difficult to successfully demonstrate this demonstration. Many comrades have made some explorations and improvements in order to complete this demonstration experiment. For example, Comrade Yu Yue’s improvement in this demonstration experiment, published in the “Physical Education Teaching Reference for Secondary Schools” in the first edition of the year 83, has achieved good results. In order to make this experiment more in line with the requirements of the classroom presentation, we have made further improvements and are now described as follows: First, the experimental principle: