Micron Spherical Silica Gel Powder for Cosmetics Additive and Column Chromatography
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YIMING SILICA GEL----Molecular sieve


Molecular sieve is a kind of aluminosilicate, which is mainly composed of silica alumina through the oxygen bridge to form an open framework structure. In the structure, there are many holes with uniform aperture and well arranged holes, which have large internal surface area.


In addition, it also contains metal ions with low electricity price and large ion radius and combined water. Because the water molecules lose continuously after heating, but the crystal skeleton structure remains unchanged, many cavities with the same size are formed, and the cavities are connected by multiple micropores with the same diameter, and the molecules of the material have the same diameter. Holes smaller in diameter are adsorbed in the cavity. Molecules larger than the pores are repelled, so molecules of different sizes are separated until the role of screening molecules is called molecular sieve. It is mainly used for deep drying of various gases, liquids, separation and purification of gases, liquids, catalyst carriers, etc.


Therefore, it is widely used in refining, petrochemical, chemical industry, metallurgy, electronics, national defense industry, etc., and is also increasingly widely used in medical, optical work, agriculture, environmental protection and many other aspects.


3A molecular sieve is mainly used for drying petroleum cracking gas, olefin, refinery, oil field gas, and chemical, pharmaceutical and industrial desiccants such as insulating glass.


Chemical formula: 2/3K2O · 1/3Na22O · Al2O3 · 2SiO2 · 9 / 2H2O


Main applications: 1. Dry ethanol and other liquids


2. Air drying of insulating glass


3. Drying of nitrogen hydrogen mixture


4. Refrigerant drying


4A molecular sieve is mainly used for natural gas and various chemical gases and liquids Drying of refrigerants, pharmaceuticals, electronic materials and volatile substances, purification of argon, separation of methane and ethane propane.


Chemical formula: Na2O · Al2O3 · 2SiO2 · 9/2H2O