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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:
Types:
MS 3A pore size:3 angstrom
Molecules excluded:Most except H2O, NH3
Application:
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.
Typical products: 3A、4A、5A、10X、13X and copper sieve etc.
|
|
(g/ml)
|
A（%）
|
W（%）
|
|
|
3A
|
0.60-0.70
|
19-20
|
0.3-0.6
|
|
|
4A
|
0.60-0.70
|
20-21
|
0.3-0.6
|
|
|
5A
|
0.60-0.70
|
20-21
|
0.3-0.5
|
|
|
5A-DW
|
0.45-0.50
|
21-22
|
0.3-0.6
|
|
|
10X
|
0.50-0.60
|
23-24
|
0.3-0.6
|
|
|
13X
|
0.55-0.65
|
23-24
|
0.3-0.5
|
|
|
13X-As
|
0.55-0.65
|
23-24
|
0.3-0.5
|
|
|
Cu-13X
|
0.50-0.60
|
23-24
|
0.3-0.5
|
※Other specifications are available upon request.