Abstract
Zeolites are well-known as valuable crystalline solids with framework structures containing discrete micropores of molecular dimensions that accommodate exchangeable extraframework cation sites.1MINUS SIGN 3 In terms of hostMINUS SIGN guest interactions, zeolites can be viewed as host frameworks with structurally intact and immutable three-dimensional (3D) structures. They show exceptional catalytic and sorption characteristics together with very desirable environmental qualities.4MINUS SIGN 7 Zeolites are widely used in commercial applications as catalysts for hydrocarbon conversions in petroleum and chemical industries, 8MINUS SIGN 10 as sorbents for small-molecule separation processes, and as ion exchangers in detergents.11