Molecular Sieve 4A: Properties and Applications

Posted by freeamfva on May 22nd, 2024

Molecular Sieve 4A: Properties and Applications
Molecular sieves are crystalline metal aluminosilicates with a three-dimensional network of silicon dioxide and aluminum oxide tetrahedra. By removing natural hydrate water through heating, uniform cavities are created that selectively adsorb molecules of a specific size. The 4A form, containing sodium ions, has an effective pore opening of 4 Å (angstroms), excluding molecules with an effective diameter greater than 4 Å (e.g., propane). These sieves are commonly used as universal drying agents in both polar and nonpolar media.Get more news about Molekularsieb 4a,you can vist our website!

Key Properties:
Pore Size: 4 Å (0.4 nm)
Particle Size: 1.6-2.5 mm
Applications:
Liquid Phase: Typically used in liquid-phase applications.
Drying: Effective for drying, cleaning, or separating liquids and gases.
Regeneration: Regeneration methods include heat, pressure, and displacement of adsorbates.
Choose the right molecular sieve based on the desired adsorption properties, considering pore and mesh size. For example, the 4A molecular sieve selectively adsorbs smaller molecules like water, CO₂, and SO₂ while excluding larger hydrocarbons.