Molecular sieves made of crystalline aluminosilicate are highly porous materials designed for separating molecules based on size and shape. Formed through the extensive cross-linking between AIO4 and SiO4 tetrahedra, these desiccants have different pore openings, which determine their type.
Maximizes Adsorption Capacity
These absorbers operate on the size exclusion or adsorption principle, trapping molecules smaller than their pore size while allowing larger molecules to pass through. This absorption process allows for the dehydrating, purifying, and separation of selective gas and liquid substances.
Molecular sieves have uniform pore sizes, ranging from microporous to mesoporous structures for a vast array of molecular separations. Achieve precise separation of molecules based on size, ensuring high purity. They are also designed for easy regeneration, these desiccants can be reused multiple times. Addtionaly, they’re built to withstand chemicals, thermal shock, and mechanical stress, ensuring both durability and a long lifespan.
Our Molecular sieves are manufactured to meet stringent quality international standards, delivering reliable application performance. We offer a comprehensive range of activated clay loose desiccants featuring diverse granule sizes and packaging options, including molecular sieve bags, drums, and pails, tailored to meet the specific moisture control needs of industrial applications, manufacturing processes, and large-scale storage.
- Effective Moisture Absorber :Absorbs 22% of its own weight
- High Selectivity: Achieve precise separation of molecules based on size
- Exceptional Adsorption Capacity: Optimal moisture and contaminant removal from gases and liquids.
- Regenerability: Designed for easy regeneration, our molecular sieves can be reused multiple times.
- Chemical Stability: Resistant to chemicals, thermal shock and mechanical stress
Type 3A:
- Pore Size: 3 angstroms.
- Ideal for drying polar liquids and gases, especially where removal of water is required without adsorbing molecules larger than water.
Type 5A:
- Pore Size: 5 angstroms.
- Capable of separating normal and isoparaffins, adsorbing linear hydrocarbons to n-C4H10, and excluding branched hydrocarbons. Used in air purification and hydrocarbon separation processes.
Carbon Molecular Sieves (CMS):
- Pore Size: Variable, can be tailored.
- Primarily used in air separation for the production of nitrogen and in gas phase applications where high purity nitrogen is required.
Type 4A:
- Pore Size: 4 angstroms.
- Suitable for removing water, ammonia, and other small molecules. It’s commonly used in gas stream drying and in the drying of polar solvents.
| Property | Unit | Bead Size | |
| Diameter | mm | 0.5-3.0 | |
| StaticH2O Adsorption | %wt | ≥16.5 | RH10%,25℃ |
| ≥20. | RH50%,25℃ | ||
| ≥21. | RH100%,25℃ | ||
| Bulk Density | g/ml | ≥0.75 | Settled |
| pH (10% slurry) | 11 | ||
| Crushing Strength | N | / | |
| Loss on Ignition | %wt | ≤0.10 | 575℃,1H |
| Loss on Attrition | %wt | ≤0.25 | |
| Methanol Capacity | %wt | ≤1.30 | |
| Specific Area | BET | 650 | |
| Particle Ratio | % | ≥99 |
Type 13X:
- Pore Size: 10 angstroms (about 1 nm).
- Has a high adsorption capacity for larger molecules, making it suitable for air separation (oxygen and nitrogen), removal of carbon dioxide, and heavy hydrocarbons.
| Property | Unit | Bead Size | ||
| Diameter | Mm | 1 to 3 | 3 to 5 | |
| StaticH2O Adsorption | %wt | ≥26 | ≥26 | RH 50% 25℃ |
| Bulk Density | g/ml | ≥0.65 | ≥0.65 | Settled |
| Loss on Attrition | %wt | ≤0.10 | ≤0.10 | |
| Loss on Ignition | %wt | ≤1.50 | ≤1.50 | 575℃,1H |
| Crush Strength | N | ≥30 | ≥80 | |
| Particle Ratio | % | ≥97 | ≥99 | |
- Pore Size: Choose a molecular sieve with pore sizes that match the size of the molecules to adsorb. Smaller molecules require smaller pore sizes for effective separation.
- Adsorption Capacity: Consider the adsorption capacity needed for the application. Higher capacity sieves can handle more adsorbate and may offer longer operational life before regeneration is required.
- Chemical Compatibility: Ensure the sieve material is chemically compatible with the substances it will contact, preventing degradation or loss of adsorption capacity.
- Regeneration Capability: If regeneration is necessary, ensure the molecular sieve’s thermal and mechanical stability can withstand the regeneration process.
- Operating Conditions: Temperature and pressure conditions of the process can affect the performance of the molecular sieve. Select a type that maintains efficacy under specific conditions.
- Packaging:
- 140 kg air-tight iron drum.
- 25 kg/carton, and each carton has inner PE bag.
- Customized packaging according to specific requirement.
Molecular Sieve Product Brochure: Download