What are the main functions of molecular sieve
Release time:
2023-03-04
Molecular sieve is mainly by molecular gravity, in the fixed surface to produce a "surface force", when the fluid flow, some of the molecules in the fluid, will do irregular movement and collision to the surface of the adsorbent, in the fixed surface produced a molecular concentration, in the overall collision movement, the number of molecules reduced, so as to achieve the separation of the role.
1. Adsorption function:
Molecular sieve is mainly by molecular gravity, in the fixed surface to produce a "surface force", when the fluid flow, some of the molecules in the fluid, will do irregular movement and collision to the surface of the adsorbent, in the fixed surface produced a molecular concentration, in the overall collision movement, the number of molecules reduced, so as to achieve the separation of the role.
Because of the crystal hole inside the molecular sieve, there is a strong polarity and Coulomb field, the polar molecules (such as water) and unsaturated molecules showed a strong adsorption capacity.
2. Drying function:
There is also a strong polarity in the crystal cavity of the molecular sieve, which can interact with the molecules containing polar groups on the surface of the zeolite molecular sieve, or induce the polarization of the polarized molecules to produce strong adsorption. Because molecular sieve has a strong adsorption capacity for water and carbon dioxide, molecular sieve has a strong adsorption capacity for polar small molecules such as water during molecular sieve desulfurization.
3. Screening function:
Its pore size distribution is very uniform and neat, when the molecular diameter is less than the diameter of the hole of the material, it will enter the crystal hole of the molecular sieve. Thus, the molecular sieves of each type are separated.
The types of molecular sieves are divided into 3a, 4a, 5a, etc. When used in different industries to achieve different effects, the correct choice should be made according to the performance of different products.
Source:
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