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催化剂是在化学反应中能改变其他物质的化学反应速率,而且本身的质量和化学性质在化学反应前后都没有变化的物质。下面笔者谈谈用KClO_3和MnO_2混合制取氧气的实验中MnO_2做催化剂实验装置的改进。
Catalysts are substances that alter the rate of chemical reaction of other substances in a chemical reaction and whose mass and chemical properties are unchanged before and after the chemical reaction. The following talk about the use of mixed with KClO_3 and MnO_2 oxygen in the experiment MnO_2 catalyst experimental device improvements.