Properties of metal species in square-shape mesopores of KSW-2-based silica

Tatsuo Kimura, Shengjun Huang, Atsushi Fukuoka, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Properties arising from 2-D orthorhombic mesoporous silica (KSW-2) were investigated for each structural feature: (1) periodicity in silicate framework and (2) square-shape mesopore. Titanium species were grafted onto the periodic silica walls of KSW-2-based mesoporous silica through silylation with octylmethyldichlorosilane in the presence of organotitanium compounds with cyclopentadienyl ligands. The surface TiO4 units formed after calcination at 550 °C showed a higher activity in the oxidation of cyclohexene with peroxides than those onto FSM-16 and MCM-41 grafted in the same manner, indicating that (1) the periodicity in the framework influenced the catalytic activity due to the heteroatoms fixed at the silicate surfaces. The synthesis of metallic Pt species inside square-shape mesopores of KSW-2-based silica was conducted by reduction of impregnated H2PtCl6. Considering the morphology of metallic Pt species formed through wet H 2 and UV reduction, it is considered that (2) the square-shape mesopore is useful for suppressing the sintering of metallic Pt species.

    Original languageEnglish
    Pages (from-to)3859-3866
    Number of pages8
    JournalJournal of Materials Chemistry
    Volume19
    Issue number23
    DOIs
    Publication statusPublished - 2009

    Fingerprint

    Silicon Dioxide
    Metals
    Silica
    Silicates
    Peroxides
    Multicarrier modulation
    Titanium
    Calcination
    Catalyst activity
    Sintering
    Ligands
    Oxidation

    ASJC Scopus subject areas

    • Materials Chemistry
    • Chemistry(all)

    Cite this

    Properties of metal species in square-shape mesopores of KSW-2-based silica. / Kimura, Tatsuo; Huang, Shengjun; Fukuoka, Atsushi; Kuroda, Kazuyuki.

    In: Journal of Materials Chemistry, Vol. 19, No. 23, 2009, p. 3859-3866.

    Research output: Contribution to journalArticle

    Kimura, Tatsuo ; Huang, Shengjun ; Fukuoka, Atsushi ; Kuroda, Kazuyuki. / Properties of metal species in square-shape mesopores of KSW-2-based silica. In: Journal of Materials Chemistry. 2009 ; Vol. 19, No. 23. pp. 3859-3866.
    @article{2884d2dac0064eec8e938dc5167eecda,
    title = "Properties of metal species in square-shape mesopores of KSW-2-based silica",
    abstract = "Properties arising from 2-D orthorhombic mesoporous silica (KSW-2) were investigated for each structural feature: (1) periodicity in silicate framework and (2) square-shape mesopore. Titanium species were grafted onto the periodic silica walls of KSW-2-based mesoporous silica through silylation with octylmethyldichlorosilane in the presence of organotitanium compounds with cyclopentadienyl ligands. The surface TiO4 units formed after calcination at 550 °C showed a higher activity in the oxidation of cyclohexene with peroxides than those onto FSM-16 and MCM-41 grafted in the same manner, indicating that (1) the periodicity in the framework influenced the catalytic activity due to the heteroatoms fixed at the silicate surfaces. The synthesis of metallic Pt species inside square-shape mesopores of KSW-2-based silica was conducted by reduction of impregnated H2PtCl6. Considering the morphology of metallic Pt species formed through wet H 2 and UV reduction, it is considered that (2) the square-shape mesopore is useful for suppressing the sintering of metallic Pt species.",
    author = "Tatsuo Kimura and Shengjun Huang and Atsushi Fukuoka and Kazuyuki Kuroda",
    year = "2009",
    doi = "10.1039/b821451d",
    language = "English",
    volume = "19",
    pages = "3859--3866",
    journal = "Journal of Materials Chemistry",
    issn = "0959-9428",
    publisher = "Royal Society of Chemistry",
    number = "23",

    }

    TY - JOUR

    T1 - Properties of metal species in square-shape mesopores of KSW-2-based silica

    AU - Kimura, Tatsuo

    AU - Huang, Shengjun

    AU - Fukuoka, Atsushi

    AU - Kuroda, Kazuyuki

    PY - 2009

    Y1 - 2009

    N2 - Properties arising from 2-D orthorhombic mesoporous silica (KSW-2) were investigated for each structural feature: (1) periodicity in silicate framework and (2) square-shape mesopore. Titanium species were grafted onto the periodic silica walls of KSW-2-based mesoporous silica through silylation with octylmethyldichlorosilane in the presence of organotitanium compounds with cyclopentadienyl ligands. The surface TiO4 units formed after calcination at 550 °C showed a higher activity in the oxidation of cyclohexene with peroxides than those onto FSM-16 and MCM-41 grafted in the same manner, indicating that (1) the periodicity in the framework influenced the catalytic activity due to the heteroatoms fixed at the silicate surfaces. The synthesis of metallic Pt species inside square-shape mesopores of KSW-2-based silica was conducted by reduction of impregnated H2PtCl6. Considering the morphology of metallic Pt species formed through wet H 2 and UV reduction, it is considered that (2) the square-shape mesopore is useful for suppressing the sintering of metallic Pt species.

    AB - Properties arising from 2-D orthorhombic mesoporous silica (KSW-2) were investigated for each structural feature: (1) periodicity in silicate framework and (2) square-shape mesopore. Titanium species were grafted onto the periodic silica walls of KSW-2-based mesoporous silica through silylation with octylmethyldichlorosilane in the presence of organotitanium compounds with cyclopentadienyl ligands. The surface TiO4 units formed after calcination at 550 °C showed a higher activity in the oxidation of cyclohexene with peroxides than those onto FSM-16 and MCM-41 grafted in the same manner, indicating that (1) the periodicity in the framework influenced the catalytic activity due to the heteroatoms fixed at the silicate surfaces. The synthesis of metallic Pt species inside square-shape mesopores of KSW-2-based silica was conducted by reduction of impregnated H2PtCl6. Considering the morphology of metallic Pt species formed through wet H 2 and UV reduction, it is considered that (2) the square-shape mesopore is useful for suppressing the sintering of metallic Pt species.

    UR - http://www.scopus.com/inward/record.url?scp=67149089287&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=67149089287&partnerID=8YFLogxK

    U2 - 10.1039/b821451d

    DO - 10.1039/b821451d

    M3 - Article

    VL - 19

    SP - 3859

    EP - 3866

    JO - Journal of Materials Chemistry

    JF - Journal of Materials Chemistry

    SN - 0959-9428

    IS - 23

    ER -