The hydrothermal (solvent) synthesis method involves the pre-dispersion of the precursor of the synthetic zeolite in aqueous (solvent) solution, followed by nucleation, growth, and crystallization at a certain temperature and autogenous pressure to form the zeolite. the first low-silica zeolites were synthesized by Barrer using the low-temperature hydrothermal method in the 1940s, and other types of molecular sieves have been successfully synthesized since then.

Zeolite molecular sieve crystals have many excellent properties such as adsorption and exchangeability, so they are widely used in petrochemical industry, detergent industry and fine chemical industry. Among the research on zeolite molecular sieves, the preparation of molecular sieves from inexpensi

Adsorption of zeolite molecular sieve is a physical change process. The reason for adsorption is mainly a molecular gravitational force on the surface of the solid "surface force", when the fluid flow, some molecules in the fluid due to irregular movement and collision to the surface of the adsorbent, molecular concentration on the surface, so that the number of such molecules in the fluid to reduce the purpose of separation and removal.

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