Changes of intermediate-range structure in the course of crystallization of zeolite beta

Satoshi Inagaki, Kei Nakatsuyama, Yuji Saka, Eiichi Kikuchi, Shinji Kohara, Masahiko Matsukata

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Silicate-ring structure in a dry silicate gel that can be transformed into zeolite beta by the steam-assisted crystallization (SAC) was investigated using high-energy X-ray diffraction (HEXRD). In total correlation function, T(r), determined from HEXRD data, a dry gel that was crystallized to zeolite beta exhibited a remarkable peak at 3.8 Å corresponding to second-neighbor Si-O separations in a 4-membered ring (4MR). The 29Si NMR results supported the existence of a large number of 4MRs in the dry gel with TEA+/Si = 0.37. The 4MRs in the dry gel, which are derived from double 3-memebered ring (D3R) structures stabilized by TEA+ in TEA+-silicate solution, are essential in the formation of zeolite beta by the SAC method.

    Original languageEnglish
    Pages (from-to)50-56
    Number of pages7
    JournalMicroporous and Mesoporous Materials
    Volume101
    Issue number1-2 SPEC. ISS.
    DOIs
    Publication statusPublished - 2007 Apr 19

    Fingerprint

    Zeolites
    Crystallization
    Silicates
    Gels
    gels
    crystallization
    silicates
    ring structures
    Steam
    steam
    X ray diffraction
    diffraction
    x rays
    Nuclear magnetic resonance
    nuclear magnetic resonance
    energy
    rings

    Keywords

    • Dry gel
    • Silicate-ring structure
    • Steam-assisted crystallization
    • Zeolite beta

    ASJC Scopus subject areas

    • Catalysis
    • Materials Science(all)

    Cite this

    Changes of intermediate-range structure in the course of crystallization of zeolite beta. / Inagaki, Satoshi; Nakatsuyama, Kei; Saka, Yuji; Kikuchi, Eiichi; Kohara, Shinji; Matsukata, Masahiko.

    In: Microporous and Mesoporous Materials, Vol. 101, No. 1-2 SPEC. ISS., 19.04.2007, p. 50-56.

    Research output: Contribution to journalArticle

    Inagaki, Satoshi ; Nakatsuyama, Kei ; Saka, Yuji ; Kikuchi, Eiichi ; Kohara, Shinji ; Matsukata, Masahiko. / Changes of intermediate-range structure in the course of crystallization of zeolite beta. In: Microporous and Mesoporous Materials. 2007 ; Vol. 101, No. 1-2 SPEC. ISS. pp. 50-56.
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    AU - Inagaki, Satoshi

    AU - Nakatsuyama, Kei

    AU - Saka, Yuji

    AU - Kikuchi, Eiichi

    AU - Kohara, Shinji

    AU - Matsukata, Masahiko

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