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氨氧化制硝酸的演示实验可以揭示硝酸工业的生产原理,要求看到红棕色的二氧化氮气体,验证有硝酸生成及氨的氧化是放热反应。选好一种合适的催化剂是本实验成败的关键。往常采用铂石棉作催化剂,但有时效果不太好,并且铂石棉用后需要活化,比较麻烦。后又曾用铂丝作催化剂,但铂丝的催化效果也不太好,而
A demonstration experiment of ammoxidation to nitric acid can reveal the production principle of the nitric acid industry. It is required to see the reddish-brown nitrogen dioxide gas and verify that the formation of nitric acid and the oxidation of ammonia are exothermic reactions. Choosing a suitable catalyst is the key to the success of this experiment. Platinum asbestos is usually used as a catalyst, but sometimes the effect is not so good, and the platinum asbestos needs to be activated after use, which is troublesome. After that, platinum wire was used as a catalyst, but the catalytic effect of platinum wire is not so good.