Molecular Sieve Zeolites
Adsorbent Purification and Separations
Molecular sieves are transition metal aluminosilicates with a uniform pore crystalline structure. Molecular sieves operate on the size exclusion principle. Smaller molecules that fit into the pores are adsorbed while larger molecules pass through. Making these materials excellent adsorbents for selectively removing impurities out of a variety of gas or liquid streams. They are especially efficient in removing water from natural gas streams or ethanol streams.
Molecular sieves have regular pore openings of 3, 4, 5, or 10 Angstroms. Polarity of the molecules matter because the highly polarized molecules are adsorbed more readily into the pores than non-polar molecules. Molecules are selectively removed in this manner. Molecular sieves are capable of dehydration of water to less than 0.01 ppmv and purify a variety of streams to extremely lower impurity levels.
of Molecular Sieves
|3A Molecular Sieve||Used
in insulated glass to prevent fogging and deflection of dual pane
windows. Olefin drying and natural gas. Powders used in
formulations with polyurethanes and swiggle strips.
for drying of gases, air, natural gas and hydrocarbon liquids. 4A
will adsorb carbon dioxide.
and used for the removal of CO2, Water, and H2S from natural gas
units. Used in Isomerization units and Pressure Swing Adsorption
(PSA) for Hydrogen purification. Powders are used for
prepurification to remove water and CO2. 13X removes various
polar molecules from olefinic and light hydrocarbon streams.
Removes oxygenates from liquid hydrocarbon streams. Used in
Oxygen Removal Units (ORU)
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