Elucidation of medium-range structure in a dry gel-forming *BEA-type zeolite

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

    Research output: Contribution to journalArticle

    28 Citations (Scopus)

    Abstract

    High-energy X-ray diffraction, 29Si nuclear magnetic resonance and Raman spectroscopy were applied to investigate medium-range structures in *BEA-type zeolite containing tetraethylammonium (TEA+) cation. In particular, the intermediates to form *BEA were focused the subject of focus. Double three-membered silicate rings (D3Rs) stabilized by TEA+ cation existed in the mother TEA+-silicate solution to prepare a dry gel that gave *BEA-type zeolite by the steam-assisted crystallization method. The D3R units transformed "4-2"-type secondary building units (SBUs) in the course of preparing the dry gel. Such "4-2"-type SBUs remained in the dry gel and played a significant role in the crystallization of *BEA-type zeolite. On the basis of these observations, we proposed that the presence of "4-2"-type SBUs in the dry gel is essential for the formation of *BEA-type zeolite in the steam-assisted crystallization, suggesting a plausible formation scheme of the periodic structure of *BEA-type zeolite in a long-range order via rearrangement of "4-2"-type SBUs.

    Original languageEnglish
    Pages (from-to)10285-10293
    Number of pages9
    JournalJournal of Physical Chemistry C
    Volume111
    Issue number28
    DOIs
    Publication statusPublished - 2007 Jul 19

    Fingerprint

    Zeolites
    Gels
    gels
    Crystallization
    crystallization
    Silicates
    steam
    Steam
    silicates
    Positive ions
    Cations
    cations
    Periodic structures
    magnetic resonance spectroscopy
    Tetraethylammonium
    Nuclear magnetic resonance spectroscopy
    Raman spectroscopy
    X ray diffraction
    nuclear magnetic resonance
    rings

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Electronic, Optical and Magnetic Materials
    • Surfaces, Coatings and Films
    • Energy(all)

    Cite this

    Elucidation of medium-range structure in a dry gel-forming *BEA-type zeolite. / Inagaki, Satoshi; Nakatsuyama, Kei; Saka, Yuji; Kikuchi, Eiichi; Kohara, Shinji; Matsukata, Masahiko.

    In: Journal of Physical Chemistry C, Vol. 111, No. 28, 19.07.2007, p. 10285-10293.

    Research output: Contribution to journalArticle

    Inagaki, S, Nakatsuyama, K, Saka, Y, Kikuchi, E, Kohara, S & Matsukata, M 2007, 'Elucidation of medium-range structure in a dry gel-forming *BEA-type zeolite', Journal of Physical Chemistry C, vol. 111, no. 28, pp. 10285-10293. https://doi.org/10.1021/jp0668044
    Inagaki, Satoshi ; Nakatsuyama, Kei ; Saka, Yuji ; Kikuchi, Eiichi ; Kohara, Shinji ; Matsukata, Masahiko. / Elucidation of medium-range structure in a dry gel-forming *BEA-type zeolite. In: Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 28. pp. 10285-10293.
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