Due to its unique pore structure and acidity characteristics, ZSM-5 zeolite has been widely used in petrochemical, coal chemical industry and fine chemical industry, such as catalytic cracking, diesel pouring, catalytic dewaxing, shape-selective catalysis and straight-run gasoline to increase octane Value aromatization, toluene disproportionation, xylene isomerization, methanol conversion to gasoline, dehydration of methanol to dimethyl ether and low-carbon hydrocarbon aromatization, C3-C4 fraction laminated gasoline, etc