ZSM-5 has many unique properties on the part of chemical composition, crystal structure, along with physical and chemical properties. Therefore, in a lot of organic catalytic reactions, it shows excellent catalytic performance. It has been more and more widely used in industry, such as application for diesel oil hydrodewaxing catalyst and fixed bed catalytic cracking catalyst. Fluid bed catalytic cracking reaction FCC catalyst addition ZSM-5 molecular sieve has great benefits for increasing the octane number of gasoline and increasing the olefin content of gas. In addition, ZSM-5 is a shape selective catalysis widely used in chemical industry, such as application for diethylbenzene catalyst and xylene isomerization catalyst. Moreover, a high silica ZSM-5 molecular sieve is used an extraction of organic compounds from water in environmental protection. In particular, our specific Nano ZSM-5 is a key component of the MTP catalyst, which has been successfully applied to the coal chemical process.
Beta molecular sieve is a successful research in 1967 by Mobil Corporation of the United States. It belongs to the cubic crystal system and contains high density crystal defects. It is the only high silica zeolite in the world with a three-dimensional twelve-membered ring channel structure. Its chemical composition is: Nan[AlnSi64-nO128], where n≤8, Beta can be used for low pressure hydrocracking, hydroisomerization, dewaxing, cracking, aromatization, olefin or aromatic isomerization, hydrocarbon conversion (eg methanol conversion to hydrocarbons) etc. In recent years, it also has application in the field of automotive exhaust purification. We can produce Beta molecular sieves of different size kinds and various silica-alumina ratio.
Key words: VOCs adsorption molecular sieve | zsm-5 molecular sieve |