4A
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4A
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Product Description

4A Molecular Sieve
Molecular sieve 4A is an alkali alumino silicate: It is Pore Diameter of 4 Angstrom. It will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger.
Application:
1) Static Drying in Gas Stream Liquid;
2) Drying and removing of Co2 from Gas Processing and Liquefied Gas(LNG);
3) Syngas Treating;
4) Industrial Desiccant Air Dryer;
5) Refrigerants Drying;
6) Static drying of electronic components.
Available in: Beads, Pellets, Powder.
Chemical Molecular Formula: Na2O·Al2O3·2SiO2·4.5H2O. (SiO2 : Al2O3 ≈2).
Technical Parameter:
Model | 4A Molecular Sieve | |||
Nominal pore diameter | 4 angstroms | |||
Shape | Sphere | Pellet | ||
Diameter | 1.7-2.5 (mm) | 3.0-5.0 (mm) | 1.6 (mm) | 3.2 (mm) |
8*12 (mesh) | 4*8 (mesh) | 1/16 (inch) | 1/8 (inch) | |
Bulk density (g/ml) | ≥0.68 | ≥0.68 | ≥0.66 | ≥0.66 |
Crushing strength (N/PC) | ≥35.0 | ≥80.0 | ≥30.0 | ≥70.0 |
Size ratio up to grade (%) | ≥98.0 | ≥98.0 | ≥96.0 | ≥96.0 |
Static H2O adsorption (%) | ≥21.5 | ≥21.5 | ≥21.5 | ≥21.5 |
Ethylene adsorption(‰) | ≤3.0 | ≤3.0 | ≤3.0 | ≤3.0 |
Water content (%) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Wear ratio (%) | ≤0.20 | ≤0.20 | ≤0.40 | ≤0.40 |
Typical Application:
a) Deep drying of air, alkaline, refrigerants and other gases and liquids.
b) Static drying of pharmaceutical packaging, electronic components and perishable objects.
c) The preparation and purification of Air.
d) As a dehydrating agent in paint and fuel.






