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How much do you know about catalysts

Time:2023-11-23 09:17:55      Click:120

Firstly, let's get to know the catalyst. A catalyst is a substance that can change the rate of chemical reactions without altering the thermodynamic equilibrium position of the reaction, and is not significantly consumed by itself.

Secondly, it should be emphasized that the reaction performance of the catalyst is the main indicator for evaluating the quality of the catalyst, which mainly includes the activity, selectivity, and stability of the catalyst. The activity of a catalyst refers to the degree to which it can accelerate the reaction rate of a chemical reaction; The selectivity of a catalyst refers to the direction in which the reaction proceeds towards the generation of a specific product; The stability of a catalyst refers to the period during which it exhibits stable activity under operating conditions. The process steps of multiphase catalytic reactions can be divided into external diffusion, internal diffusion, chemical adsorption, surface reaction, desorption, internal diffusion, and external diffusion; Essentially, it can be divided into physical processes, chemical processes, and physical processes.



Finally, do you know the functions or effects of catalysts in industry?



① Enable the implementation of processes that were previously difficult to achieve in industry;



② From a commonly used raw material in the past, it can be changed into multiple raw materials;



③ The process that was originally unable to be produced can be achieved through production;



④ What originally needed to be completed in multiple steps has been changed to one step completion;



⑤ From low product quality and high energy consumption to low production cost and high quality;



⑥ From low conversion rate, many by-products, and severe pollution, to high conversion rate, single product, and reduced pollution.

 
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