Find Nano Zeolite Molecular Sieve National Standard, Oxygen Concentrator Zeolite Sieve Low Price, Low Price Zeolite Molecular Sieves on Industry Directory, Reliable Manufacturer/Supplier/Factory from China.
New Products
3A Molecular sieve
Zeolite molecular sieve refers to an aluminosilicate material containing alkali metal or alkaline earth metal oxides with an open framework and a relatively regular cage structure. It has been widely used since it was discovered by Swedish scientists in 1956, and has been widely used in petrochemical, environmental protection, bioengineering and other fields due to its special physical characteristics. And with the gradual expansion of the demand for zeolite molecular sieves, researchers have begun to expand the synthesis methods of a variety of zeolite molecular sieves to meet the needs of various fields.
Chemical formula: 2/3K2O·1/3Na2O·Al2O3·2SiO2·9/2H2O
English name: 3A Molecular Sieve
Silicon to aluminum ratio: SiO2/Al2O3≈2
Effective pore size: about 3Å
| Property | Unit | Standard values | |
| Shape | Beads | ||
| Diameter | mm | 1.6-2.4 | 3.0-5.0 |
| Qualified size ratio | wt% | ≥98 | ≥98 |
| Bulk density | Kg/m³ | ≥660 | ≥640 |
| Abrasion | wt% | ≤0.2 | ≤0.2 |
| Crushing strength | N | ≥30 | ≥70 |
| Water adsorption capacity | wt% | ≥21 | ≥21 |
| Residual moisture | wt% | ≤1.5 | ≤1.5 |
| Shape | Cylindricals | ||
| Diameter | inch | 1/16 | 1/8 |
| Qualified size ratio | wt% | ≥98 | ≥98 |
| Bulk density | Kg/m³ | ≥660 | ≥640 |
| Abrasion | wt% | ≤0.25 | ≤0.25 |
| Crushing strength | N | ≥30 | ≥70 |
| Water adsorption capacity | wt% | ≥20 | ≥20 |
| Residual moisture | wt% | ≤1.5 | ≤1.5 |
| Test method | HG/T2690-2012 | ||
Working principle
1. Adsorption function
The adsorption of molecular sieves on substances comes from physical adsorption (van der Waals force). The crystal pores have strong polarity and Coulomb field, and show strong adsorption to polar molecules (such as water) and unsaturated molecules ability.
2. Sieving function
The pore size distribution of the molecular sieve is very uniform, and only substances with a molecular diameter smaller than the pore diameter can enter the crystal cavities of the molecular sieve. Different molecules of different substances are distinguished by the priority order and size of adsorption, so it is called "molecular sieve".
3. Structure
The proteoglycan polymer thus constituted twists and turns to form a microporous sieve-like structure called molecular sieve. Molecular sieves only allow substances smaller than their micropores to pass through, and have a barrier effect on macromolecular substances and bacteria larger than their micropores. Make the matrix a defensive barrier to limit the spread of harmful substances such as bacteria.
Application:
Mainly used in architectural glass industry, gas refining and purification and petrochemical industry.
1. Removal of water: it depends on the pressure, temperature and water content of the regeneration gas. In general, the dry gas at 200-350°C is 0.3-0.5Kg/cm² and passes through the molecular sieve bed for 3 to 4 hours, and the outlet temperature is 110-180°C and cooled.
2. Removal of organic matter: replace organic matter with water vapor, and then remove water.
Package & store:
Indoors with room temperature and relative humidity not greater than 90%: avoid water, acid, alkali, and isolate the air, and store in airtight.
Packing 25KG/piece. Specific can be based on customer requirements.
Shelf life: minimum 2 years.
Note: Avoid direct exposure of molecular sieve to air.
Certificates
Our Company
Quality test centre
Transportation
FAQ
1.Are you trader or manfacturer?
Both. During the 10 years, we have so many cooporation factories from every chemicals.
2.How can we get sample?
Just contact us, and you will get the sample.
3.How can we charge the sample ?
SAMPLE IS FREE, just pay for the freight.
4.Any questions, just contact us, and you will have the best products and best service.
Product Categories : Laboratory Chemicals
