Chapter 1. The zeolite scene (L. Moscou). Chapter 2. Zeolites and molecular sieves. An historical perspective (E.M. Flanigen). Chapter 3. Structural subunits in silicate and phosphate structures (H. van Koningsveld). Chapter 4. The preparation of molecular sieves. A. Synthesis of zeolites (J.C. Jansen). B. Synthesis of AlPO 4 -based molecular sieves (S.T. Wilson). Chapter 5. Modified zeolites (R. Szostak). Chapter 6. Clays from two to three dimensions (R.A. Schoonheydt). Chapter 7. Techniques of zeolite characterization (J.H.C. van Hooff and J.W. Roelofsen). Chapter 8. Solid state NMR spectroscopy applied to zeolites (G. Engelhardt). Chapter 9. Introduction to zeolite theory and modelling (R.A. van Santen, D.P. de Bruyn, C.J.J. den Ouden and B. Smit). Chapter 10. Ion exchange in zeolites (R.P. Townsend). Chapter 11. Diffusion in zeolite molecular sieves (M.F.M. Post). Chapter 12. Introduction to acid catalysis with zeolites in hydrocarbon reactions (P.A. Jacobs and J.A. Martens). Chapter 13. Preparation of zeolitic catalysts (H.W. Kouwenhoven and B. de Kroes). Chapter 14. Coke formation on zeolites (H.G. Karge). Chapter 15. Hydrocarbon processing with zeolites (I.E. Maxwell and W.H.J. Stork). Chapter 16. Zeolites in organic syntheses (W.F. Holderich and H. van Bekkum). Appendix I - Zeolite structures. Appendix II - Pore sizes of zeolites. Keyword index.