Zeolites chemistry

J. A. Rabo, ed.. Zeolite Chemistry and Catalysis, ACS Monograph 171, American Chemical Society, Washington, DC, 1976. 

Volume 69 Zeolite Chemistry and Catalysis. Proceedings of an International Symposium, Prague, Czechoslovakia, September8-13,1991 edited by P.A. Jacobs, N.l. Jaeger, L. Kubelkova and B. Wichterlov ... 

Zeolite chemistry is an excellent example of how a three-dimensional surface can alter the course of chemical reactions, selecting for one product out of a host of potential candidates. In addition to the many commercial applications that they have found, shape-selective zeolites have provided the basis for a rich new area of catalytic science and technology, one expected to spawn yet more materials, knowledge, and applications. 

Volume 69 Zeolite Chemistry and Catalysis. Proceedings of an International Symposium,... 

Ikeue, K., Yamashita, H., and Anpo, M. (1999) Photocatalytic reduction of C02 with H20 on titanium oxides prepared within the FSM-16 mesoporous zeolite. Chemistry Letters, 28 (11), 1135—1136. 

U. Csicsery, S.M., "Zeolite Chemistry and Catalysis", Rabo,J.A., Ed., the American Chemical Society, Washington, D.C.,... 

Skeels, G.W. and Breck, D.W. (1983). In Zeolite chemistry. V-substitution of silicon for aluminum in zeolites via reaction with aqueous fluorosilicate, Proceedings of the 6th International Conference on Zeolites, 1984, 1983, Olson, D. and Bisio, A. (eds), pp. 87-96. Butterworth, Guiford. 

The currently available quantum chemical computational methods and computer programs have not been utilized to their potential in elucidating the electronic origin of zeolite properties. As more and more physico-chemical methods are used successfully for the description and characterization of zeolites, (e.g. (42-45)), more questions will also arise where computational quantum chemistry may have a useful contribution towards the answer, e.g. in connection with combined approaches where zeolites and metal-metal bonded systems (e.g. (46,47)) are used in combination. The spectacular recent and projected future improvements in computer technology are bound to enlarge the scope of quantum chemical studies on zeolites. Detailed studies on optimum intercavity locations for a variety of molecules, and calculations on conformation analysis and reaction mechanism in zeolite cavities are among the promises what an extrapolation of current developments in computational quantum chemistry and computer technology holds out for zeolite chemistry. 

R. von Ballmoos, The °0-exchange method in zeolite chemistry, Salle Sauerlander, Frankfurt am Main,... 

Gier et al. reported zinc and berylUum phosphates and arsenates with the X (FAU), ABW and SOD structures reminiscent of the early aluminum-rich synthetic zeolite chemistry. The synthesis of ZnP04-X (FAU) is especially spectacular. Crystallization occurs almost instantaneously at 0°C [58]. Concurrent with ease of synthesis, the structure is thermally unstable. 

Flanigen, E.M. (1975) Structural analysis by infrared spectroscopy. ACS Monogr., 171, 80-117 Rabo, ). (ed.) (1975) Zeolite Chemistry and Catalysis, American Chemical Sodety, Washington, D.C. 

For hydrocarbons of more than three carbons, mulhple isomers are possible. Among those isomers, the natural or equilibrium distributions rarely match the commercial demand. Isomerization technology provides the means to convert the less valuable isomers into more valued ones. Specific isomerization reaction mechanisms involve species of relatively similar size, so zeolites, with their precise morphologies, can be made into exceptional catalysts with high selectivity. The ability to adjust zeolite chemistry through innovative synthesis or postsynthesis treatments further enhances their versatihty in isomerization applicahons. 

---