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Introduction to molecular sieves

A synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules. Its general chemical formula is (M′2M)O·Al2O3·xSiO2·yH2O, M′ and M are monovalent and divalent cations such as K+, Na+, Ca2+, Ba2+, etc. respectively.


Its structure has many channels with uniform pore diameters and neatly arranged holes. Molecular sieves of different pore sizes separate molecules of different sizes and shapes.

According to the different molecular ratios of SiO2 and Al2O3, molecular sieves with different pore sizes are obtained. Its models are: 3A (potassium type A), 4A (sodium type A), 5A (calcium type A), 10Z (calcium type Z), 13Z (sodium type Z), Y (sodium type Y), sodium mordenite type wait.

It has high adsorption capacity, strong selectivity and high temperature resistance. It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration. Exhaust gas purification is also receiving increasing attention.


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Article classification: Molecular Sieve
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