产品详情
简单介绍:
Molecular Sieve 4A is an alkali alumino silicate;it is the sodium form of the
Type A crystal structure.4A molecular sieve has an effective pore opening of about 4 angstroms(0.4nm).type 4A molecular sieve material will adsorb most molecules with a kinetic diameter of fewer than 4 angstroms and exclude those larger.
详情介绍:
Parameters of 4A Molecular Sieve
Model | 4A | |||||
Nominal Pore Diameter | 4 angstroms | |||||
Shape | Sphere(ball) | Pellet | ||||
Diameter | 1.7-2.5 | 3.0-5.0 | 1.6 | 3.2 | ||
Size ratio up to grade (%) | ≥98 | ≥98 | ≥96 | ≥96 | ||
Bulk density (g/ml) | ≥0.72 | ≥0.75 | ≥0.66 | 0.66 | ||
Wear ratio (%) | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.20 | ||
Crushing strength (N) | ≥45/piece | ≥85/piece | ≥30/piece | ≥60/piece | ||
Static H2O adsorption (%) | ≥21.5 | ≥21.5 | ≥21.5 | ≥21.5 | ||
Water content (%) | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 |
Molecular Sieve Type 4A Applications
Typical Chemical Formula | Na2O. Al2O3. 2SiO2. 4.5 H2O | |||||
SiO2: Al2O3≈2 | ||||||
Typical Application | a)Drying and removing of CO2 from natural gas, LPG, air, inert and atmospheric gases, etc. | |||||
b) Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syngas treating) | ||||||
c) Special types are used in the air break units of buses, trucks and locomotives. | ||||||
d) Packed in small bags, it may be used simply as a packaging desiccant. |