Molecular sieves have a wide range of application prospects and have been called “one of the new materials of the 21st century”. There are many types of molecular sieves that can adsorb different molecules. It has a microporous structure with uniform gaps inside like a sieve, which can screen and adsorb different molecules. Therefore, molecular sieves are widely used in the pressure swing adsorption industry and the chemical industry. And there are various types of molecular sieves, commonly used ones are 3A, 4A, 5A, 13X, etc.