行业动态
Introduction to Molecular Sieve
A synthetic hydrated aluminosilicate (zeolite) or natural zeolite with molecular screening properties. Its chemical formula is (M ′ 2M) O · Al2O3 · xSiO2 · yH2O, where M ′ and M are monovalent and divalent cations such as K+, Na+, Ca2+, Ba2+, etc. It has many uniformly sized pores and neatly arranged pores in its structure, and molecular sieves with 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 include: 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 zeolite type, etc. It has high adsorption capacity, strong selectivity, and high temperature resistance. Widely used in organic and petrochemical industries, it is also an excellent adsorbent for gas dehydration. It is also receiving increasing attention in exhaust gas purification.