
Chemical Zeolite 4A Molecular Sieve Adsorbent
Molecular sieves are crystalline metal alumino silicates having a three dimensional interconnecting network of silica and alumina tetrahedra. Natural water of hydration is removed from this network by heating to produce uniform cavities which selectively adsorb molecules of a specific size.

Molecular Sieve 4A is a synthetic zeolite of A-type crystal structure in sodium form with a pore opening of 4 angstroms (0.4 nm).
|
Molecular Formula |
Na2O·Al2O3·2SiO2·9/2H2O |
|
SiO2/ Al2O3 |
≈ 2 |
|
Normal Pore Opening |
4 Angstroms (Å) |
|
Regeneration temp. (°C) |
200-315 |
|
Advantages |
High Stability; High Strength; Large Water Absorption; Low Attrition; Deep Dehydration |
Applications:
1. Molecular Sieve 4A used for deep air drying;
2. Molecular Sieve 4A removal of hydrocarbons,ammonia and methanol from gas streams;
3. Molecular Sieve 4A used for removing water from air-conditioning and air-braking systems;
4. Molecular Sieve 4A is a type of sodium aluminosilicate,dehydration in the industries of paint,dyeand coating;
5. Molecular Sieve 4A drying and removing of CO2 from natural gas, LPG, air, inert and athmospheric gases, etc;
6. Molecular Sieve 4A dehydration for alkane depth,refrigerant depth and used for natural gas dehydration depth;
7. Molecular Sieve 4A used to remove water, carbon dioxide, hydrogen sulfide and mercaptans with low molecular weight;
8. Molecular Sieve 4A static drying in medicine packaging, electronic component,changeable substance, perishable chemicals


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