Molecular Sieve 5A

Molecular sieve 5A

Molecular sieve 5A

Molecular sieve 5A (so-called zeolites) are drying agents of type A and have 1x n-modules, whereby these zeolites have the highest polarity and preferably exclude water. These are synthetically produced aluminosilicates. Zeolites of type 5A contain calcium in their crystal lattice (Ca4.5Na3[(AlO2)12(SiO2)12]), the resulting pore diameter is approx. 0.5 nm. This constant structure results in a very high inner surface area of up to 1000m²/g. Together with their high electrostatic adsorption forces, these molecular sieves are therefore ideal for air drying.

Molecular sieves achieve a high absorption capacity even at low relative humidity. Thus they are able to dry the supply air very strongly. This makes it useful wherever the degree of drying is a decisive selection criterion. The maximum water absorption in a fully saturated environment is approx. 23%. There is no colour indicator to indicate the loading condition.

 

 

Chemical Composition: Sodium-Aluminium-Silicate

CAS-number: 1318-02-1

 

Structure A
Cations Ca+
Actual pore size 0,5 nm
Effective pore size 0,5 nm
Appearance and shape Beige, solid balls
particle size 3 - 5 mm
bulk density 0,67 kg/l
pore volume 0,35 - 0,70 ml/g
breaking strength >80 N
Specific surface 500 - 1000 m²/g
Gl575°C Loss on ignition <1,5 %
rate of abrasion <0,25 %
water absorption capacity >230 ml/kg