5A molecular sieve technical specifications

5A molecular sieve, a type of zeolite with a 5A (0.5 nm) pore size, is widely used in adsorption and separation technologies due to its excellent performance. Its technical specifications include: Chemical Composition: Typically formulated as Na₂O·Al₂O₃·2SiO₂·4.5H₂O, ensuring a stable framework structure. Pore Size: 5A, providing selective adsorption sites for molecules with kinetic diameters ≤ 5A, such as N₂, O₂, and small hydrocarbons. Physical Properties: Appearance as white or colorless crystals/particles; bulk density 0.6-0.8 g/cm³; specific surface area 550-600 m²/g; compressive strength ≥ 35 N/particle. Adsorption Performance: High water adsorption capacity (up to 21 wt% at 25°C, 50% RH), superior to 3A and 4A sieves; preferential adsorption for linear molecules, making it ideal for separating N₂ from O₂ in air or removing CO₂ from natural gas. Mechanical Strength: Good wear resistance, ensuring stable operation as packing in towers. Applications: Used as packing material in adsorption towers, column separators, and fixed bed reactors; suitable for natural gas drying, air separation, petrochemical solvent dehydration, and biogas upgrading. Proper storage in sealed containers to maintain moisture resistance.