Molecules
small enough to pass through are adsorbed while larger
molecules are not. It is different from a common filter
in that it operates on a molecular level. For instance,
a water molecule may be small enough to pass through while
larger molecules are not. Because of this, they often
function as a desiccant. Molecular sieve can absorb water
up to 22% of its own weight.
Often
they consist of aluminosilicate minerals or synthetic
compounds that have open structures through which small
molecules can diffuse, such as clays, porous glasses,
microporous charcoals, active carbons etc...
Molecular
sieves are usually utilized in the petroleum industry,
especially with purification of gas streams. The mercury
content of natural gas is extremely harmful to the aluminum
piping and other parts of the liquefaction apparatus -
silica gel is used in this case.
Our
Range of Molecular Sieves are
