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AIM-4A Molecular Sieve

AIM-4A Molecular Sieve is an alkali alumina silicate with 4 angstroms (0.4nm) pore opening. It can be employed to adsorb most molecules with less than 4 angstroms kinetic diameter such as oxygen, nitrogen, carbon dioxide and straight-chain hydrocarbons (Branched-chain hydrocarbons and aromatics are excluded).

Specific applications: Deep drying of natural gas, air, refrigerants, alkaline, and other gases and liquids; Static drying of pharmaceutical packaging, electronic components and perishable objects.

 

Model

AIM-4A

Colour

Light grey

Nominal pore diameter

4 angstroms(0.4nm)

Shape

Sphere

Pellet

Diameter (mm)

1.7-2.5 (8*12 mesh)

3.0-5.0 (4*8 mesh) 1.6 (1/16 inch)

3.2 (1/8 inch)

Size ratio up to grade (%)

≥98

≥98 ≥96

≥96

Bulk density (g/ml)

≥0.70

≥0.70 ≥0.68

≥0.68

Wear ratio (%)

≤0.20

≤0.20 ≤0.40

≤0.40

Crushing strength (N)

≥35/piece

≥85/piece ≥30/piece

≥70/piece

Static H2O adsorption (%)

≥21.5

≥21.5 ≥21.5

≥21.5

Static methanol adsorption(%)

≥15

≥15 ≥15

≥15

Water content (%)

≤1.5

≤1.5 ≤1.5

≤1.5

Typical Chemical Formula Na2O . Al2O3 . 2SiO2 . 4.5 H2O

(SiO2 : Al2O3 ≈2)