Na-magadiite prepared in a water/alcohol medium: synthesis, characterization and use as a host material to prepare alkyltrimethylammonium- and Si-pillared derivates

Abstract Syntheses of Na-magadiite were performed under hydrothermal conditions in a water/alcohol medium. It is only possible to obtain a pure and well crystallized magadiite sample using a water/ethanol medium at a water/ethanol molar ratio of ~0.12. As shown by thermal analysis and 1H liquid nuclear magnetic resonance spectroscopy, ethanol is not incorporated into the magadiite. Intercalation of dodecyl- and hexadecyltrimethylammonium cations in the interlayer space of Na-magadiite at different theoretical ion-exchange rates shows that the experimental ion- exchange rates are in good agreement with the theoretical ones. However, scanning electron micrographs of the sample having a theoretical ion exchange rate of 25-75% shows that the exchanges are not homogeneous (both thin and thick platelets are present). Attempts to obtain a Si- pillared compound starting from C16TMA-magadiite as the host material leads to a microporous compound having a BET surface area of 778 m2g-1.

[1]  N. Miyamoto,et al.  Intercalation of a cationic cyanine dye into the layer silicate magadiite , 2001 .

[2]  Y. Sugahara,et al.  Characterization of Silanol Groups in Protonated Magadiite by 1H and 2H Solid-State Nuclear Magnetic Resonance , 2000 .

[3]  K. Kuroda,et al.  Interlamellar grafting of γ-methacryloxypropylsilyl groups on magadiite and copolymerization with methyl methacrylate , 2000 .

[4]  Sang-Woon Choi,et al.  Preparation of Porous Silica-Pillared Layered Phase: Simultaneous Intercalation of Amine-Tetraethylorthosilicate into the H+-Magadiite and Intragallery Amine-Catalyzed Hydrolysis of Tetraethylorthosilicate , 2000 .

[5]  J. Nagy,et al.  Preparation, characterization and application of the magadiite based mesoporous composite material of catalytic interest , 2000 .

[6]  K. Kuroda,et al.  Perfluoroalkylsilylation of the Interlayer Silanol Groups of a Layered Silicate, Magadiite , 1998 .

[7]  F. Mizukami,et al.  Recrystallization of magadiite varieties isomorphically substituted with aluminum to MFI and MEL zeolites , 1997 .

[8]  W. Schirmer.  Zeolite Science 1994: Recent Progress and Discussions , 1997 .

[9]  R. Harris,et al.  A structural consideration of kanemite, octosilicate, magadiite and kenyaite , 1997 .

[10]  R. Harris,et al.  A 23Na NMR study of hydrous layered silicates , 1996 .

[11]  K. Franklin,et al.  A new route for the preparation of hydrated alkali-metal silicates , 1995 .

[12]  R. Harris,et al.  A study of the layered alkali metal silicate, magadiite, by one- and two-dimensional 1H and 29Si NMR spectroscopy , 1994 .

[13]  C. Detellier,et al.  Organo-layered silicates. Interlamellar intercation and grafting of ethylene glycol in magadiite , 1994 .

[14]  T. Pinnavaia,et al.  Silica-pillared derivatives of H+-magadiite, a crystalline hydrated silica , 1992 .

[15]  G. W. Kirker,et al.  Preparation of molecular sieves from dense layered metal oxides , 1991 .

[16]  Jon S. Kauffman,et al.  Pillaring of magadiite with silicate species , 1990 .

[17]  K. Kuroda,et al.  Synthesis of layered polysilicic acid-acrylamide intercalation compounds and polymerization in the interlayer spaces , 1990 .

[18]  K. Kuroda,et al.  Organic Derivatives of Layered Polysilicates. II. Reaction of Magadiite and Kenyaite with Diphenylmethylchlorosilane , 1988 .

[19]  D. Hasha,et al.  Hypothetical Structures of Magadiite and Sodium Octosilicate and Structural Relationships Between the Layered Alkali Metal Silicates and the Mordenite- and Pentasil-Group Zeolites , 1988 .

[20]  E. Ruiz-Hitzky,et al.  Proton-sodium exchange in magadiite. Spectroscopic study (NMR, IR) of the evolution of interlayer OH groups , 1988 .

[21]  K. Bergk,et al.  A new model structure of sheet sodium (Na) silicate hydrates (Na−SH) ― theoretical view based on known X-ray and NMR-measurements , 1988 .

[22]  D. Bibby,et al.  Synthesis of Kenyaite and Magadiite in the Presence of Various Anions , 1987 .

[23]  K. Sing.  Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984) , 1985 .

[24]  W. Schwieger,et al.  High-resolution solid-state silicon-29 nuclear magnetic resonance spectroscopic studies of synthetic sodium silicate hydrates , 1985 .

[25]  J. Serratosa,et al.  Characterization of surface Si-OH groups in layer silicic acids by IR and NMR spectroscopies , 1983 .

[26]  E. Ruiz-Hitzky,et al.  Intracrystalline grafting on layer silicic acids , 1980, Nature.

[27]  A. Weiss,et al.  Magadiite and H-magadiite: I. Sodium magadiite and some of its derivatives , 1975 .

[28]  G. Lagaly,et al.  マガディアイトおよびH‐マガディアイト II H‐マガディアイトおよびその中間化合物 , 1975 .

[29]  Z. Johan,et al.  La kanemite, nouveau silicate de sodium hydraté de néoformation , 1972 .

[30]  G. Brindley.  Unit cell of magadiite in air, in vacuo, and under other conditions , 1969 .

[31]  H. Eugster.  Hydrous Sodium Silicates from Lake Magadi, Kenya: Precursors of Bedded Chert , 1967, Science.

[32]  R. Iler,et al.  Ion exchange properties of a crystalline hydrated silica , 1964 .

[33]  E. Teller,et al.  ADSORPTION OF GASES IN MULTIMOLECULAR LAYERS , 1938 .