Zeolites inclusion properties

The selective intercalation of guests into solid hosts offers the potential for application in catalysis and separation science. An excellent case in point is zeolites, which exhibit shape and size selective inclusion properties and are used for an enormous variety of processes [44,45]. Additionally, a munber of layered materials have been reported to possess selective intercalation properties, including layered metal phosphonates [46,47], montmorUlonite [48], magnesium aluminum oxide [49], and layered double hydroxides [50-59]. 

J. Cejka, Zeolites Structures and Inclusion Properties, in Encyclopedia of Supramolecular Chemistry, M. Dekker, New York, 2004, 1623. 

Supramolecular Chemistry Definition, p. 1401 Supramolecular Polymers, p. 1443 Surfactants, Part I Fundamentals, p. 1458 Siafactants, Part II Applications, p. 1470 Zeolites Structures and Inclusion Properties, p. 1623... 

Calixarenes and Their Analogues Molecular Complexa-tiorz, p. 145 Crown Ethers, p. 326 Mineralomimetic Structures, p. 868 Self-Assembling Capsules, p. 1237 Zeolites Structures and Inclusion Properties p. 1623... 

Zeolites Inclusion Chemistry Structure and Properties of the Host... 

The concept zeolites conventionally served as the synonym for aluminosilicates with microporous host lattice structures. Upon removal of the guest water, zeolites demonstrate adsorptive property at the molecular level as a result they are also referred to as molecular sieves. Crystalline zeosils, AlPO s, SAPO s, MAPO s (M=metal), expanded clay minerals and Werner compounds are also able to adsorb molecules vitally on reproval of any of the guest species they occlude and play an Important role in fields such as separation and catalysis (ref. 1). Inclusion compounds are another kind of crystalline materials with open framework structures. The guest molecules in an inclusion compound are believed to be indispensable to sustaining the framework structure their removal from the host lattice usually results in collapse of the host into a more compact crystal structure or even into an amorphous structure. 

---