Molecular sieve desiccants are extremely effective at removing water from liquids and gases. They are even more effective silica gel or activated alumina , because of their crystalline composition; they can create virtually water-free products. These sieves are very useful in cryogenic operations where liquefaction of gases is required and water must be eliminated to avoid freezing.
Molecular sieves offer a variety of adsorption selectivity based on molecular size, molecular affinity for the sieve crystal surface, and shape of the molecule. Using this typeof system is exceptionally uncomplicated for diminishing impurities to practically indiscernible levels compared to other liquid separation systems. The ease of use and superior efficiency when compared to other adsorption systems makes the most popular engineering solution a molecular sieve system.
Molecular sieves can be regenerated by heating it to an optimal temp from 130°C to 250°C.