Mesoporous Molecular Sieves 1998

The original properties of mesoporous molecular sieves are so unique that the design of most existing catalysts could be reconsidered. It might indeed be of interest to introduce MMS either as a support or as the active phase, merely on the basis of their high surface areas, narrow pore size distribution and flexibility in composition. The recent literature provides examples of MMS based catalysts of many types such as acid-base solids, supported metals and supported oxides, mixed oxides, anchored complexes and clusters, grafted organic functional groups and others. Examples of all these developments are documented in the present proceedings including some spectacular new proposals. The new metallic (Pt) mesophases are specially worth mentioning because they represent a new approach to producing non-supported highly dispersed metals.

In these proceedings the reader will find feature articles and regular papers from many worldwide groups, covering all aspects of synthesis, physical characterization and catalytic reactivity of MMS and their chemically modified forms. It is actually remarkable that this recent development brought together an even broader spectrum of scientists from traditionally unrelated fields such as those of liquid crystals, surfactants, sol-gels, amorphous oxides and mixed oxides, solid state, adsorbents and heterogeneous catalysts. Obviously, this is a fast-growing research area which triggers the imagination and creativity at the cross-road between material design, molecular surface tailoring and catalytic applications.

(A selection). Using the organic-inorganic interface to define pore and macroscale structure (G.D. Stucky et al.). Potential applications for M41S type mesoporous molecular sieves (J.C. Vartuli et al.). Catalytic properties of mesoporous molecular sieves prepared by neutral surfactant assembly (T.J. Pinnavaia, W. Zhang). Structure simulation of mesoporous molecular sieves (K. Kleestorfer et al.). In-situ XRD study of the initial stages of formation of MCM-41 in a tubular reactor (M. Lindén et al.). Internal modification of ordered mesoporous hosts (K. Moller, T. Bein). Mesoporous materials derived from layered silicates and the adsorption properties (S. Inagaki et al.). Adsorption characterization of mesoporous molecular sieves (P.I. Ravikovitch et al.). Synthesis and applications of nanoporous materials (J.Y. Ying). The preparation of mesoporous metals from preformed surfactant assemblies (G.S. Attard et al.). Preparation of novel mixed [Cu, Zn, Al] hexagonal and lamellar mesophases (S. Valange, Z. Gabelica). Tubular aluminophosphate mesoporous materials containing framework silicon, vanadium and manganese (Z. Luan et al.). Mesoporous molecular sieve thin films (M.E. Gimon-Kinsel, K.J. Bakkus, Jr.). Nucleation, growth and form of mesoporous silica: Role of defects and a language of shape (G.A. Ozin et al.). Structure and dynamic properties of surfactant systems (D. Langevin). Silazane-silylation of mesoporous silicates: Towards tailor-made support materials (R. Anwander et al.). Stabilization of M41S materials by trimethylsilylation (T. Tatsumi et al.).