Molecular sieve is a class of adsorbent or film-like substance with uniform micropores, mainly composed of silicon, aluminum, oxygen and some other metal cations, whose pore size is comparable to the general molecular size, according to its effective pore size to sieve various fluid molecules.

Petroleum and chemical industry Zeolites can be used as catalysts and their carriers. Catalysts with zeolites as the basic raw material are used in a wide range of applications, mainly in the following fields. Used as cracking catalyst, hydraulic catalyst and hydrocracking in petroleum refining proc

Air purification materials Zeolite, as a porous mineral material with microporous pore and void structure and ion exchange and adsorption selectivity, can be a medium for nano-scale unitary substances to arrange and generate assembled materials in one-dimensional, two-dimensional and three-dimensio

Many reactions catalyzed by zeolites are of the positive carbon ion type, and the reactions occur via positive carbon ion intermediates. Zeolites also have considerable catalytic activity for some free radical reactions and oxidation-reduction reactions.

Zeolite is the general name of zeolite family minerals, a kind of shelf-like aqueous aluminosilicate minerals, the common ones are plagioclase, filamentous zeolite, rhodochrosite, grossular zeolite and sheet zeolite, etc. They have unique ion exchange, ion exchange, catalytic, thermal stability and acid resistance, etc. They are widely used in the fields of building materials, environmental protection, ion exchange, catalytic cracking, daily light industry, petrochemical industry, agriculture and animal husbandry, paper making and plastics, etc.

Zeolites have superior adsorption, ion exchange, catalytic and stabilization properties.1.1 Adsorption properties When the water in the zeolite structure is removed. The pores with large inner surface are formed. It can adsorb and store a large number of molecules. Therefore, the adsorption capacity