+86 15821372151
4A Activated Molecular Sieve-Spherical & Bar shape
4A Activated Molecular Sieve-Spherical & Bar shape
Introduction & Specs
| Introduction | 4A molecular sieve is an alkali metal aluminosilicate with a pore size of 4A and a sodium-type A-type crystal structure. It can absorb any molecule with a critical diameter of 4A or less, including water, methanol, ethanol, ethylene, propylene, hydrogen sulfide, sulfur dioxide, carbon dioxide, and ammonia. Its selective adsorption of water is superior to that of other molecules.
|
| Benefits | l Its pore size distribution is very uniform.
l It has excellent adsorption properties and good adhesion to oils and dirt. l It is safe and reliable for the human body and has no adverse effects on the environment. l In high-temperature or very low-humidity environments, it can guarantee a water adsorption capacity that exceeds that of other desiccants.
|
| Applications | l Deep drying of gases and liquids such as air, natural gas, alkanes, and refrigerants
l Static drying of pharmaceutical packaging, electronic components, and perishable objects l Used as a dehydrating agent in paints, fuels, and coatings l Production and purification of argon
|
| Molecular formula | Na2O·Al2O3·2SiO2··4.5H2O (SiO2:Al2O3≈2)
|
Sales Specification
| ITEMS | 4A | |||
| Grade | Spherical shape | Bar-shape | ||
| Nominal pore diameter | 4 angstroms | |||
| Appearance | Beige spherical particles | Beige bar-shaped particles | ||
| Particle size | 1.6-2.5mm | 3.0-5.0mm | 1.5-1.7mm | 3.0-3.3mm |
| Bulk density | 0.70g/ml min | 0.68g/ml min | ||
| Compressive strength, N/grain | 35.0min | 100.0min | 40.0min | 80.0min |
| Particle size qualification rate | 98.0 %min | |||
| Static water adsorption (35±℃, RH75%, 24h) | 22% min | |||
| Static methanol adsorption | 15.0% min | |||
| Wear rate | 0.2%max | |||
| Moisture content of packaged products (550±10℃, 1h) | 1.5%max | |||
| Packing | Available in 25kgs valve bag, 125 or 150kgs iron drum. Other packages available on request. |
| Storage | It is easy to absorb moisture and should not be directly exposed to the air. It should be stored in a cool and dry place. Otherwise, it should be regenerated at high temperature and purged at 200-350℃. |
| Shelf Life | 12 months from production date. |
aton@predawnchem.com
With cooperation with domestic academy of sciences and many institutes, our plant is equipped with ....