Zeolite Molecular Sieve (ZMS)

Molecular Sieve used to removal water and contaminates in gas and liquid — Molsivcn

Molecular Sieve (Zeolite)

Molecular Sieve Crystal Structure of MolsivCN Adsorbent — Zeolite micro skeleton structures

Summary:

Molecular Sieve (as known as synthetic zeolite) is a micro-porous aluminosilicate crystals. It is made of silicon-oxy tetrahedron, alumina tetrahedron to form a basic skeleton structure, in which exist metal cations (e.g. Na+, K+, Ca2+, etc.) to balance the excess negative charge in the crystal. According to the type of crystal structure, zeolite consists of: A-type (LTA), X-type (FAU), Y-type and so on.

The chemical formula of zeolite unit cell:

Mx/n [ (AlO2)x (SiO2)y ] ·H2O

Mx/n: Metal cations, to maintain charge balance in crystal

(AlO2)x(SiO2)y: Skeleton of zeolite, with different shapes hole and pore

H2O: Chemical and physical adsorption of water, physical adsorption of water can desorption under certain conditions

Properties:

Moleculars adsorbed and excluded by Shanghai MolsivCN Adsorbent

Type	Pore Size	Molecules excluded	Application
Molecular Sieve 3A	3 angstrom	Most except H2O, NH3	This product is mainly used in commercial dehydration of unsaturated hydrocarbon streams, including cracked gas, propylene, butadiene, acetylene; drying polar liquids such as methanol and ethanol.
Molecular Sieve 4A	4 angstrom	Propane(Adsorbed species include SO2, CO2, H2S, C2H4, C2H6, and C3H6)	Preferred for static dehydration in closed liquid or gas systems, e.g., in packaging of drugs, electric components and perishable chemicals; water scavenging in printing and plastics systems and drying saturated hydrocarbon streams. Generally considered a universal drying agent in polar and nonpolar media.
Molecular Sieve 5A	5 angstrom	All 4-carbon rings, iso-compounds (Molecules adsorbed include C3H8, nC4H8, nC4H9OH, nC4H10~nC22H46)	Separation of normal paraffins from branched-chain and cyclic hydrocarbons; removal of H2S, CO2 and low MW mercaptans from natural gas.
Molecular Sieve 13X	10 angstrom	Effective diameter >10Å, ie (C4F9)3N	Commercial gas drying, air sepration plant feed gas purification (simultaneous H2O and CO2 removal) and liquid hydrocarbon/natural gas sweetening (H2S and high MW mercaptan removal).
Special Molecular Sieve	N/A	N/A	Use special molecular sieve in the particular field to get a much better effect. Insulating Glass Refrigerant Automobile Ethanol Dehydration Hydrogen Purification Oxygen Generation Desulfurization