Synthesis and characterization of highly ordered mesoporous material; FSM-16, from a layered polysilicate

S. Inagaki, Y. Fukushima, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

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    Abstract

    Development of preparation conditions of highly ordered mesoporous SiO2materials(FSM-16) derived from a layered polysilicate has been summarized and a "folded sheets: mechanism for their formation has been presented. When Na ions in the interlayer region of kanemite were exchanged for alkyltrimethylammonium ions, organoammonium/silicate complexes were obtained and mesoporous silica materials were prepared by calcination of those complexes. When the exchange reaction was carried out at a relatively low pH(∼8.5), the exchange ratio was low and highly ordered pore structures of the mesoporous silica could not be confirmed although the formation of uniform pore size was realized. Increasing the pH(∼11.5) improved the exchange ratio and consequently realized highly porous materials with a regular hexagonal array of uniform channels. The condition of high pH(>11.5) increased a fraction of dissolved silica species. Removal of the dissolved species from the system was necessary to prepare pure FSM-16. The improvement of the reguarlity and purity of FSM-16 by increasing the pH and filtration supported the "folded sheets" mechanism for its formation. The Q4/Q3ratios of SiO4tetrahedra in the silicate/organic complexes prepared by the optimum procedure were in good agreement with those calculated by the folded sheets model and the observed N2absorption behavior suggested an uniform pore-size of FSM-16.

    Original languageEnglish
    Pages (from-to)125-132
    Number of pages8
    JournalStudies in Surface Science and Catalysis
    Volume84
    Issue numberC
    DOIs
    Publication statusPublished - 1994

    Fingerprint

    Mesoporous materials
    Silica
    Silicon Dioxide
    Silicates
    Pore size
    synthesis
    silicon dioxide
    porosity
    silicates
    Ions
    Pore structure
    Calcination
    Porous materials
    porous materials
    roasting
    interlayers
    ions
    purity
    preparation
    FSM 16

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Catalysis
    • Physical and Theoretical Chemistry
    • Materials Chemistry
    • Surfaces, Coatings and Films

    Cite this

    Synthesis and characterization of highly ordered mesoporous material; FSM-16, from a layered polysilicate. / Inagaki, S.; Fukushima, Y.; Kuroda, Kazuyuki.

    In: Studies in Surface Science and Catalysis, Vol. 84, No. C, 1994, p. 125-132.

    Research output: Contribution to journalArticle

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