Current Location： Home > News > Chemical Knowledge > The difference between catalyst and promoter: an analysis from the perspective of chemical initiation reaction

[Chemical Knowledge]：The difference between catalyst and promoter: an analysis from the perspective of chemical initiation reaction

Read： 1009 Time：15months ago Source：Transform the World with Simplicity

Catalyst and promoter are two concepts commonly used in the field of chemistry. They play an important role in chemical reactions, but there are some differences in function and mechanism. This article will analyze the catalyst and the promoter from the perspective of chemical initiation reaction to help readers better understand the difference between them.

we look at the catalyst. A catalyst refers to a substance or combination of substances capable of altering the rate of a reaction without participating in the reaction itself. A catalyst can speed up or slow down the rate of a chemical reaction without itself undergoing a permanent change during the course of the reaction. The catalyst provides a new reaction channel by reducing the activation energy of the reaction, thereby changing the path of the reaction. For example, platinum is a catalyst commonly used in automobile exhaust emissions. Under its action, harmful substances such as nitrogen oxides and carbon monoxide can be catalyzed into harmless nitrogen and carbon dioxide.

In contrast, a promoter refers to a substance that interacts with a reactant in a chemical reaction to increase the selectivity, yield, or rate of the reaction by changing the nature and structure of the reactant. The promoter will change permanently during the reaction and can be regarded as an integral part of the reactant. Unlike the catalyst, the role of the promoter is to directly participate in and affect the reaction process, rather than by changing the reaction path to adjust the reaction rate. For example, enzymes are a class of aids in organisms, which can reduce the energy barriers of various chemical reactions in organisms and increase the reaction rate. The functional differences between

catalysts and promoters lead to different applications in chemical reactions. Catalysts are often used in industrial processes to accelerate chemical reactions. Because the catalyst can participate in the reaction multiple times, the reaction can be carried out multiple times under the action of the same catalyst, which improves the productivity and efficiency. On the other hand, promoters are widely used in the field of organic synthesis and the like. The auxiliary agent can selectively change the nature of the reactant, improve the yield and selectivity, so as to synthesize the target compound.

In addition, the mechanism of the catalyst in the catalytic reaction is also different from that of the promoter. The mechanism of action of the catalyst generally involves adsorption, dissociation and recombination at the surface of the substance. The interaction between catalysts and reactants can be studied and explained by molecular mechanics, quantum chemistry and other methods. In contrast, the mechanism of the promoter is more complex, often involving the interaction of the bonding between reactants, conformational changes and so on. The study of promoters often requires an in-depth understanding of the nature and structure of the reactants in order to determine the best promoter.

In summary, there are some differences in the role and mechanism of catalysts and promoters in chemical reactions. Catalysts are substances that can change the reaction rate and play a role in accelerating or slowing down the reaction, while promoters are substances that change the nature and structure of the reactants and improve the selectivity, yield or rate of the reaction by affecting the reaction process. The difference in function and mechanism between the two determines their application and research direction in the field of chemistry. It is hoped that this paper can provide some help for readers to better understand the difference between catalyst and promoter.

Previous： The difference between Rauvolfia and Rauvolfia emesis

Next： Catalyst and Admixture: Analyzing the Difference and Function of the Two

News Categories