5A molecular sieve (pore size about 0.5 nanometers) is an important industrial catalyst and adsorbent. Its catalytic performance is mainly derived from its unique pore structure, surface acidity and shape-selective catalytic characteristics.

1. Molecular sieve catalyst

The pore size (0.5 nanometers) of the 5A molecular sieve allows molecules with molecular dynamics diameters smaller than the pore diameter to enter, achieving molecular-level selective catalysis.

2. Application fields of molecular sieve

Petrochemical

Ni-isomeralkane separation: Use form-selective catalytic properties to separate n-alkane (such as n-pentane) and isomeralkane (such as isopentane) and are used for high-octane gasoline production.

Petroleum dewaxing: adsorbs n-alkanes to reduce the freezing point of the oil and improve low-temperature fluidity.

Olefin polymerization: Use a support to support metal catalysts (such as Ni, Pt) to promote the polymerization of ethylene and propylene.

Gas separation and purification

Nitrogen-oxygen separation: High-purity oxygen (>99.5%) and nitrogen are prepared by pressure-switching adsorption (PSA) technology.

Hydrogen purification: remove impurities such as CO, CO₂, and improve hydrogen purity.

Environmental protection field

Exhaust purification: catalyze the oxidation of NOx, CO and other pollutants to reduce emissions.

VOCs treatment: adsorb and catalyze the decomposition of volatile organic matter.