The carbothermal reduction process of a montmorillonite-polyacrylonitrile intercalation compound

    Research output: Contribution to journalArticle

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    Abstract

    To develop a carbothermal reduction process for the conversion of oxides to nitrides, a montmorillonite-polyacrylonitrile (PAN) intercalation compound was applied as a precursor. Montmorillonite-carbon mixtures were heated as well as the intercalation compound in N2 at 1100 to 1500° C for comparison. From the intercalation compound, β-sialon, AIN and SiC were mainly formed. Oxides were reduced without their crystallization. On the other hand, in the reactions of the mixtures, some oxides and other kinds of nitride were obtained as principal products in addition to these phases. Furthermore, the intercalation compound was more favourable than the mixtures having a larger amount of carbon in terms of the reduction of oxides and the formation of nitrides. These observations suggest that the layered structure of the intercalation compound led to an effective and specific carbothermal reduction process.

    Original languageEnglish
    Pages (from-to)3572-3577
    Number of pages6
    JournalJournal of Materials Science
    Volume23
    Issue number10
    DOIs
    Publication statusPublished - 1988 Oct

    Fingerprint

    Bentonite
    Carbothermal reduction
    Intercalation compounds
    polyacrylonitrile
    Polyacrylonitriles
    montmorillonite
    Clay minerals
    intercalation
    Oxides
    Nitrides
    nitrides
    oxides
    Carbon
    sialon
    lead compounds
    carbon
    Crystallization
    crystallization
    products

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials
    • Materials Science(all)

    Cite this

    The carbothermal reduction process of a montmorillonite-polyacrylonitrile intercalation compound. / Sugahara, Yoshiyuki; Kuroda, Kazuyuki; Kato, Chuzo.

    In: Journal of Materials Science, Vol. 23, No. 10, 10.1988, p. 3572-3577.

    Research output: Contribution to journalArticle

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    abstract = "To develop a carbothermal reduction process for the conversion of oxides to nitrides, a montmorillonite-polyacrylonitrile (PAN) intercalation compound was applied as a precursor. Montmorillonite-carbon mixtures were heated as well as the intercalation compound in N2 at 1100 to 1500° C for comparison. From the intercalation compound, β-sialon, AIN and SiC were mainly formed. Oxides were reduced without their crystallization. On the other hand, in the reactions of the mixtures, some oxides and other kinds of nitride were obtained as principal products in addition to these phases. Furthermore, the intercalation compound was more favourable than the mixtures having a larger amount of carbon in terms of the reduction of oxides and the formation of nitrides. These observations suggest that the layered structure of the intercalation compound led to an effective and specific carbothermal reduction process.",
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