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What is the mechanism by which a catalyst can act as a catalyst
May 24, 2018

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Definition of catalyst

It can significantly change the reaction rate and its chemical properties and the number of substances that are essentially unchanged before and after the reaction.

Catalysts have positive catalysts (that is, accelerate reaction rates) and negative catalysts (that is, reduce the rate of reaction). Generally, they are not specified as positive catalysts.

The catalytic principle

Chemical reaction can be conducted according to the change of free energy, but just can't judge according to the variation of free energy of reaction can be completed, because the chemical reaction depends upon the completion of the reaction energy barrier, namely if the reaction energy barrier is very high, you must provide a certain amount of energy, the past can base, complete reaction.

The barrier is called activation energy.

The catalyst is to reduce the activation energy to produce a chemical reaction in a relatively undemanding environment.

The catalyst changes the reaction rate because it changes the reaction path and reduces the activation energy of the reaction.