Sorbents and Applications

For kinetic separation, the pore size needs to be precisely tailored to lie between the kinetic diameters of the two molecnles that are to be separated. Many microporous molecular sieves with various pore dimensions have been synthesized (Hartman and Kevan, 1999), which have yet to be used as sorbents. [Pg.3]

Only four types of generic sorbents have dominated the commercial use of adsorption activated carbon, zeolites, silica gel, and activated alumina. Estimates of worldwide sales of these sorbents are (Humphrey and Keller, 1997) [Pg.3]

Activated carbon Zeohtes Silica gel Activated alumina [Pg.3]

Some other reported figures are (according to 2001 demand) zeolites ( 1,070 million), silica gel ( 71 million), activated alumina ( 63 million), and clays ( 16 million) (Chemical Engineering, February 2000, p. 59). [Pg.4]

Polymeric resins are used increasing use in potable water purification, because for some organics they can remove to lower concentration levels than activated carbon does. Acid-treated clays and pillared clays are used for treatments of edible and mineral oils. [Pg.4]

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