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Molecular sieves, 4 Å is used to absorb molecules as large as butane. It is utilized for the separation of natural gas, liquified petroleum gas (LPG) and alkenes. It finds application in the refining and purification of liquid and gases. It is also used for drying and purification of air, inert gases and solvents. It is actively involved to remove methanol, carbon dioxide and ammonia from fluid streams. It plays a vital role to remove heavy metal ions available in water. It is also used as a soap forming agent and as a detergent auxiliary. It has been considered as a general-purpose drying agent in polar and non polar media.
Unformed molecular sieve of 4 Angstrom pore size useful in homogeneous drying applications.
Lv, X. D.; Wang, Z. Y.; Zhang, J. H.; Chen, Z. S.; Cao, W. F.; Liu, F. M.; Chen, Q. D. Facile Fabrication of Poly (Acrylic Acid-Co-Acrylamide) Hydrogel with 4A Molecular Sieve for Removal of Heavy Metal Ions. Adv Mat Res 2015, 1092, 852-855.
Ahmed, M. J.; Theydan, S. K. Modeling of propane separation from light hydrocarbons by adsorption on 4A molecular sieve zeolite. J. Nat. Gas Sci. Eng 2014, 18, 1-6.