Clover shaped molecular sieve has a uniform microporous structure with uniformly sized pores. These pores can adsorb molecules smaller than their diameter into the interior of the pore cavity and have preferential adsorption ability for polar and unsaturated molecules. Therefore, they can separate molecules with different degrees of polarity, saturation, molecular size, and boiling point, and have the function of "sieving" molecules, hence the name molecular sieve.
Molecular sieves are crystalline silicates or aluminosilicates formed by connecting silicon oxygen tetrahedra or aluminum oxygen tetrahedra through oxygen bridge bonds. Molecular sieve is a type of aluminosilicate compound with a cubic lattice. Molecular sieves have a uniform microporous structure with uniformly sized pores. These pores can adsorb molecules smaller than their diameter into the interior of the pore cavity and have a preferential adsorption ability for polar and unsaturated molecules. Therefore, they can separate molecules with different degrees of polarity, saturation, molecular size, and boiling point, and have the function of "sieving" molecules, hence the name molecular sieve.
Trifolium like molecular sieveMolecular sieves have many uniformly sized pores and neatly arranged pores in their structure. Molecular sieves with different pore sizes separate molecules of different sizes and shapes. According to the different molecular ratios of SiO2 and Al2O3, molecular sieves with different pore sizes are obtained.
Trifolium like molecular sievefeature
1. Adsorption function: Molecular sieves mainly generate a "surface force" on a fixed surface due to molecular gravity. When a fluid flows through, some molecules in the fluid will make irregular movements and collide with the surface of the adsorbent, resulting in molecular concentration on the fixed surface. In the overall collision motion, the number of molecules decreases, thereby achieving separation. Due to the strong polarity and Coulomb field inside the crystal pores of molecular sieves, they exhibit strong adsorption ability for polar molecules (such as water) and unsaturated molecules.
2. Drying function: The crystal cavities of molecular sieves also have strong polarity, which can interact strongly with molecules containing polar groups on the surface of zeolite molecular sieves, or induce polarization of polarizable molecules to produce strong adsorption. Due to the strong adsorption capacity of molecular sieves for water and carbon dioxide, molecular sieves have a strong adsorption ability for polar small molecules such as water during desulfurization.
3. Screening function: Its pore size distribution is very uniform and neat. Only substances with a molecular diameter smaller than the pore diameter will enter the crystal cavity of the molecular sieve. So as to separate the various types of molecular sieves. The types of molecular sieves are divided into 3a, 4a, 5a, etc. When used in different industries to achieve different usage effects, the correct selection should be based on the performance of different products.