1. The catalyst can only accelerate thermodynamically possible reactions. When it is required to develop a new chemical reaction catalyst, the reaction must first be thermodynamically analyzed to see if it is a thermodynamically feasible reaction.
2. The catalyst can only accelerate the reaction to equilibrium, and cannot change the equilibrium position (equilibrium constant) of the reaction.
3. The catalyst is selective to the reaction. When the reaction may have more than one different direction, the catalyst only accelerates one of them, which promotes the unity of reaction rate and selectivity.
4. The life of the catalyst. The catalyst can change the chemical reaction rate and does not enter the reaction by itself. Ideally, the catalyst will not be changed by the reaction. However, in the actual reaction process, the catalyst will be heated and chemically for a long time, and some unsimulative physical and chemical changes will also occur.