4A
molecular sieve is an alkali metal aluminosilicate , can adsorb water ,
NH3, H2S, sulfur dioxide, carbon dioxide , C2H5OH, C2H6, C2H4 and other
critical molecular diameter less than 4A . Widely used in gas and liquid drying
, can also be used in certain gas or liquid purification and purification ,
such as argon gas from the system.
Molecular sieve is a kind of synthetic with
micro groove cubic lattice sialic acid salts. According to the internal cavity
of the crystal size and adsorption or reject molecules of different material,
thus is called "molecular sieve". Molecular diameter less than the
material can enter the molecular sieve of molecular sieve pores diameter
crystal crystal, thus by adsorption, otherwise, the rejection. Molecular sieves
are determined according to the different material molecular polarity of
priority in the order of the adsorption.
According to the molecular adsorption
effect on the choice of the size and shape of the different, namely only those
smaller than the molecular sieve adsorption aperture molecules. For small polar
molecules and unsaturated molecules, has selective adsorption performance, the
larger the polarity, not the higher the degree of saturation, the choice and
the stronger adsorption. Type A molecular sieve is A kind of molecular sieves
which, its structure and NaCl are similar, belong to the cubic crystal system.
Due to the 4 a molecular sieve effective aperture of 0.4 nm, so called 4 a
molecular sieve, the space network structure by the silicon oxygen tetrahedron
element [SiO4] and alumina tetrahedron unit [AlO4] staggered.
Application
1. Polyester additives agent: the role of 4
a zeolite as detergent additives mainly calcium ion exchange the water
softening water, remove dirt and prevent dirt deposition. 4 a molecular sieve
is most used in the generation of phosphorus to help lotion and apply the most
sophisticated products. 4 a molecular sieve to replace sodium tripolyphosphate
as detergent builder to solve the pollution of the environment has a major
role. 4 a molecular sieves also can be used as a soap abrasive molding agent,
toothpaste, etc.
2. Environmental protection, sewage
treatment, 4 a molecular
sieves can remove the NH3 - N in the sewage and Pb2 +, Cu2 +, Zn2 +, and
Cd2 +, etc. Industry and agriculture, civil, and aquatic animal husbandry in
the discharge of wastewater containing ammonia nitrogen, not only harm fish
such as survival, pollution in aquaculture environment, and promote the growth
of algae, and lead to the blocking of rivers and lakes. Due to the 4 a
molecular sieve of NH4 + high commutativity choice, has been successfully
applied in the field. From metal mining, smelting, metal surface treatment and
effluent from chemical industry and other departments, containing heavy metal
ion great harm to human body. Deal with the sewage with 4 a molecular sieves in
addition to guarantee water quality qualified, can also recycle heavy metal.
3. The other purposes:
(1) water treatment - hard water softener,
can replace the current widespread use of sulfonated coal in our country, thus
reducing costs;
(2) the metallurgical industry - separating
agent, separation, extraction from brine potassium, rubidium, cesium, etc. In
industry for enrichment, separation and extraction process;
(3) the petrochemical industry, catalyst,
desiccant, adsorbent;
(4) agriculture - soil conditioner;
(5) the medicine - silver zeolite
antimicrobial agent.
About us
SILICA GEL supplier----Fenglong Chemical
Co., Ltd. is primarily engaged in manufacturing silica gel since 2001. Our
silica gel manufacturing plant is located in Maanshan with manufacturing
capacity of more than 500-MT silica gel per year. 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 silica 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, dessicant 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.
