What is catalysts？In the chemical reaction, the reaction rate of the reactant can be changed without changing the chemical equilibrium,before and after the chemical reaction, and itself quality and chemical properties are not changed,the substance is called catalyst (solid catalysts is also called catalyst).
What is catalysts？According to the definition of the International Union of pure and Applied Chemistry (IUPAC) 1981: the catalyst is a substance that changes the reaction rate but does not change the total reaction of Gibbs free energy.
What is catalysts？The effect of catalyst in chemical reaction is called catalysis. Solid catalyst is also known as catalyst in industry.
What is catalysts？There is also an argument that the catalyst is involved in chemical reactions. In a total of chemical reaction, catalyst is reduced the reaction required activation energy, the essence is to a comparison to the response into two is prone to chemical reaction (as opposed to known inhibitors). In these two reactions. The first reaction catalyst plays the role of reactant and a second reaction catalysts play the role of product, so that from the point of view of the total reaction equation, catalyst before and after reaction did not change.
What is catalysts？Generally speaking, the catalyst is involved in the process of chemical reaction, it can selectively change the rate of chemical reaction, and the number of its own and the chemical properties of the basic material before and after the reaction.The catalyst accelerates the chemical reaction, so that the reaction can reach chemical equilibrium as soon as possible,which is called catalytic action, but it does not change the equilibrium of the reaction.
The composition, chemical properties and mass of the catalyst are not changed before and after the reaction; the relationship between the catalyst and the reaction system is the same as the relationship between the lock and key, which has a high degree of selectivity (or specificity).
A catalyst does not have a catalytic effect on all of the chemical reactions,such as manganese dioxide in potassium chlorate thermal decomposition which has played a catalytic role, accelerate the rate of a chemical reaction,but it does not necessarily have a catalytic effect on other chemical reactions.