Mainly used in hydrogen flow of catalyst in the diesel, fixed bed catalytic cracking catalyst, flow bed catalytic cracking reaction on the FCC catalyst add ZSM - 5 zeolite to improve the gasoline octane number, is of great benefit increase the olefin content of gas.
The FCC catalyst is added ZSM - 5 zeolite ZSM - 5 a molecular sieve most versatile, and mainly concentrated in the SiO/Al O (silica and the molar ratio of 3 oxidation 2 aluminium) between 40 and 50.
Moreover ZSM - 5 zeolite was widely used in chemical industry in the shape-selective catalysis, such as the diethylbenzene catalyst, xylene isomerization catalyst;In the environmental protection of organic matter in water extraction using high silicon ZSM - 5 zeolite, the SiO/Al O between 220-400.
The direct synthesis of water glass and aluminium sulphate ZSM - 5 zeolite, the product is used for low hydrocarbon alkylation, isomerization and aromatization, wax matrix of flow of the catalyst.