在由氯酸钾制氧时,通常是用二氧化锰(MnO_2)作催化剂,但是还有其他物也质可以用作催化剂。首先,在缺少二氧化锰时,化学教师能够容易地用其他物质(催化剂)来代替二氧化锰。其次,对不同物质催化性能的试验可以由学生在化学课外工作中进行并成为学生的良好的、 In the production of oxygen from potassium chlorate, manganese dioxide (MnO 2) is usually used as a catalyst, but other substances can also be used as a catalyst. First, in the absence of manganese dioxide, chemistry teachers can easily replace manganese dioxide with other substances (catalysts). Second, tests of the catalytic properties of different substances can be performed by students in chemistry extracurricular work and become good,