Molecular sieve

Molecular sieve absorption capability is extremely strong, for purified gas, save should avoid direct exposure in the air. Longer storage time and moisture absorption of molecular sieve before use should be regenerated. Molecular sieve avoid oil and liquid water. Use should be avoided in contact with the oil and liquid water . Industrial gases in the drying process , air, hydrogen , oxygen , nitrogen , argon , etc. in parallel with two adsorptive dryer , a work, while the other can be regenerated . Alternating between work and regeneration, in order to ensure continuous operation of equipment . Work under the dryer at 8-12 ℃ , heated to 350 ℃ under the red gas regeneration. Different specifications slightly different molecular sieve regeneration temperature . Some organic molecular sieve has good catalytic gas phase reactions .

Also known as Molecular sieve is a crystalline aluminum silicate , its crystal structure has pores of regular and uniform pore size of the molecular size of the order of magnitude , than the pore diameter only allows small molecules to enter, so can molecules in the mixture to be screened according to size . So called molecular sieves.

As early as 200 years ago , B. Crone tter first named the aluminosilicate Molecular sieve , the chemical composition of the general formula wherein M and n is the valence of the metal ions and their ; x is silica molecules ; y is the number of molecules of water ; p is the number of atoms of aluminum ; q is the number of atoms of silicon . Molecular sieve in the chemical industry as a solid adsorbent, the adsorption material can be desorbed molecular sieve can be regenerated after use . Also for gas and liquid drying, purification , separation and recycling. 1960s began , in the oil refining industry as a cracking catalyst , and now has developed a variety of catalytic processes for different molecular sieve catalysts.

Performance

Powdered molecular sieve crystals with metallic luster , hardness of 3-5 , the relative density of 2 to 2.8 , a color of natural Molecular sieve , synthetic Molecular sieve is white , insoluble in water , thermal stability and acid resistance as the composition ratio of SiO2/Al2O3 increased with the increase . Molecular sieve has a large surface area , up to 300 ~ 1000m2 / g, the inner surface height crystal polarized efficient adsorbent as a class , also a kind of solid acid , the surface has a high acid strength and acid concentration , can cause carbenium ionic catalytic reaction . When the composition of the metal ions and other ions in the solution to be exchanged, adjust aperture to change its adsorption and catalytic properties, and thus to obtain different properties of Molecular sieve catalysts.

About us

SILICA GEL supplier----Fenglong Chemical Co., Ltd. is primarily engaged in manufacturing silica gel since 2001. We are manufacturing Indicating silica gel & Non-Indicating type of SILICA GEL in all grades such as blue silica gel, orange silica gel and basic silica gel such as type A silica gel , type B silic gel ,type C silica gel and another special silica gel Column chromatography silica gel . We are Chinese manufacturer of silica gel and supplying it across the world. Silica gel manufactured by us is of best quality which is widely used as cat litter, desiccant silica gel in anti-rusting and moisture-proof of product, packaging, drying and separation of gases, the catalyst carrier of petrochemical industry and so on.
We added the production line of molecular sieve and special-purpose molecular sieve in 2005, and the production base covers an area of 11000m2, with 8000m2 of factory buildings, three production shops and annual output of 3,000 tons of molecular sieves.