Molecular sieves are used commercially to purify gas streams and as desiccants to remove water or reduce humidity. This article focuses chiefly on what you need to know when buying a desiccant dryer, although the basic principles may apply to other applications as well.
How a Molecular Sieve Works
The material used in an industrial molecular sieve has small uniform pores. When other substances come in contact with the molecular sieve, the molecules that are the right size to fit in the pores will be adsorbed. The molecules that are too large to fit will not. Molecular sieves function at the microscopic level, therefore their sizes are measured in angstroms. Pore sizes 3? and 4? will adsorb water while larges sizes remove larger hydrocarbons.
Molecular Sieve Materials
In a strictly scientific sense, many natural desiccant dehumidifiers like lime, clay and silica gel also work by sieving molecules of water vapor, but commercial molecular sieves are made of synthetic crystalline aluminosilicates. Unlike desiccants found in nature, the control of pore size during manufacture produces selective adsorption characteristics.
**The above information is for customers’ reference only. Performance characteristics vary depending on specific application. please contact us by email at email@example.com if detailed application method for molecular sieve needed.
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