Molecular sieve 4A refers to sodium A-type silica aluminumate, which can absorb the critical diameter of molecules below 4A. lt can be used to adsorb water, carbon dioxide, alcohols, olefins, etc. Our 4A molecular sieve possesses the advantage of uniform hole channel, large water absorption,faster adsorption rate and lower regenerated temperature.
4A molecular sieve is one of the most consumable molecular sieves used in industry, its selective adsorption of water is higher than any other molecule. SNOWPEAK 4A molecular sieve adsorbs water, methanol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, ethylene, propylene and other molecules with diameters no more than 4 angstroms. Usually used for gas and liquid drying, but also for refining and purification of certain gases or liquids, such as the preparation of argon.
| Type | 4A | |||||
| Nominal Pore Diameter | 4 angstroms | |||||
| Chemical Formula | Na2O . Al2O3 . 2SiO2 . 4.5 H2O (SiO2 : Al2O3 ≈2） | |||||
| Shape | Bead | Pellet | ||||
| Diameter(mm) | 20×32mesh | 1.6-2.5 | 3.0-5.0 | 1/16″ | 1/8″ | |
| Static H2O Adsorption(%) | 25℃, Saturated NaCl, 24h | ≥22 | ≥22 | ≥22 | ≥22 | ≥22 |
| 35℃, Saturated NaCl, 24h | ≥21.5 | ≥21.5 | ≥21.5 | ≥21.5 | ||
| Static CH4O Adsorption(%) | 0℃, Saturated Methanol Vapor | ≥15 | ≥15 | ≥15 | ≥15 | |
| Bulk Density(g/ml) | ≥0.70 | ≥0.74 | ≥0.72 | ≥0.66 | ≥0.66 | |
| Crush Strength(N) | ≥35 | ≥85 | ≥30 | ≥80 | ||
| Wear Ratio(%) | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.2 | ≤0.25 | |
| Water Content(%) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | |
| Particle Ratio(%) | ≥95 | ≥97 | ≥97 | ≥96 | ≥96 | |
* Detergent auxiliary, soap molding agent, toothpaste abrasive
* Sewage treatment, heavy metal recovery
* Water softener, soil conditioner
* Separating agent in metallurgical industry
* Silver zeolite antibacterial agent in pharmaceutical industry
