The role of molecular sieve

Molecular sieve is a material with precise and single tiny holes, uniform pore size and high specific surface area. It is mainly used for adsorption of gas or liquid, and can also be used for catalytic reaction. The principle of action is that sufficiently small molecules can be adsorbed through the pores, while larger molecules cannot. The name of molecular sieve comes from its ability to adsorb molecules smaller than the diameter of the pores into the interior of the pores, and exclude molecules larger than the pores, so that molecules with different shapes and diameters, molecules with different degrees of polarity, molecules with different boiling points, and molecules with different degrees of saturation can be separated to play the role of "sieving" molecules. 12 molecular sieve has a wide range of applications, including but not limited:

Gas treatment and separation. By adjusting the pore size and surface properties of the molecular sieve, the separation of gases can be achieved, such as the capture and storage of carbon dioxide, and the selective adsorption of methane. 4 catalytic reaction. Molecular sieves are widely used in catalytic reactions, including gas treatment and separation. For example, in automobile exhaust treatment, molecular sieve can be used as a catalyst carrier to convert harmful gases into harmless substances through catalytic oxidation.

Desulfurization and denitrification. Molecular sieves can be used to remove sulfur oxides and nitrogen oxides in combustion exhaust gas, and convert sulfur oxides and nitrogen oxides into harmless substances through selective adsorption and catalytic reaction, thereby reducing the impact on the environment.

Gas sensing. Molecular sieves can be used in the preparation of gas sensors to achieve high sensitivity detection of target gases by selectively adsorbing specific gases.

In addition, molecular sieves are also used in the fields of drinking water purification, medical oxygen production, organic chemical industry and petrochemical industry. Different types of molecular sieves (e. g., 3A, 4A, 5A, etc.) have different pore sizes and are suitable for separating and purifying molecules of different sizes and shapes.