Abstract
Zeolites are crystalline hydrated aluminosilicates with small pores comparable with molecule in frameworks based on extensive three-dimensional networks of oxygen ions. The zeolites have been routinely used as adsorbents, ion exchangers, and catalysts. In these applications, the zeolites are usually used in powder and pellet forms. Recently, much interest has been paid to membranes of the zeolites because the unique structures and physicochemical properties of zeolites make the zeolite membranes attractive for a wide variety of practical applications, including gas and vapor separations, membrane reactors, chemically selective sensors, and optoelectronic devices. In this chapter, synthesis and separation properties of zeolite membranes are described in brief.
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