FORMATION OF BORON NITRIDE AND BORON CARBIDE BY PYROLYSIS OF CONDENSATION PRODUCTS OF BORIC ACID AND ETHANOLAMINES.

Hiroaki Wada, Kazuaki Nojima, Kazuyuki Kuroda, Chuzo Kato

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Boron nitride was from boric acid-diethanolamine or -triethanolamine condensation products by their pyrolysis in a nitrogen flow. The condensation products obtained from boric acid-diethanolamine system (molar ratio 1:1 and 2:3) were glassy solids and had a polymeric structure containing the B-O-C bond. Monomeric triethanolamine borate, which contained both B-O-C and coordinate B-N bonds, was formed from boric acid-triethanolamine system. Pyrolysis of these condensation products in N//2 flow at 1400 degree C yielded boron nitride. A small amount of B//4C was also formed, depending on the molar ratio or on the carbon content of the condensation products.

    Original languageEnglish
    Pages (from-to)130-134
    Number of pages5
    JournalYogyo Kyokai Shi/Journal of the Ceramic Society of Japan
    Volume95
    Issue number1
    Publication statusPublished - 1987

    Fingerprint

    Ethanolamines
    Boron carbide
    boron carbides
    boric acids
    Boric acid
    diethanolamine
    Boron nitride
    boron nitrides
    Triethanolamine
    carbides
    pyrolysis
    Condensation
    Pyrolysis
    condensation
    products
    Borates
    borates
    Nitrogen
    Carbon
    nitrogen

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

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    abstract = "Boron nitride was from boric acid-diethanolamine or -triethanolamine condensation products by their pyrolysis in a nitrogen flow. The condensation products obtained from boric acid-diethanolamine system (molar ratio 1:1 and 2:3) were glassy solids and had a polymeric structure containing the B-O-C bond. Monomeric triethanolamine borate, which contained both B-O-C and coordinate B-N bonds, was formed from boric acid-triethanolamine system. Pyrolysis of these condensation products in N//2 flow at 1400 degree C yielded boron nitride. A small amount of B//4C was also formed, depending on the molar ratio or on the carbon content of the condensation products.",
    author = "Hiroaki Wada and Kazuaki Nojima and Kazuyuki Kuroda and Chuzo Kato",
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    T1 - FORMATION OF BORON NITRIDE AND BORON CARBIDE BY PYROLYSIS OF CONDENSATION PRODUCTS OF BORIC ACID AND ETHANOLAMINES.

    AU - Wada, Hiroaki

    AU - Nojima, Kazuaki

    AU - Kuroda, Kazuyuki

    AU - Kato, Chuzo

    PY - 1987

    Y1 - 1987

    N2 - Boron nitride was from boric acid-diethanolamine or -triethanolamine condensation products by their pyrolysis in a nitrogen flow. The condensation products obtained from boric acid-diethanolamine system (molar ratio 1:1 and 2:3) were glassy solids and had a polymeric structure containing the B-O-C bond. Monomeric triethanolamine borate, which contained both B-O-C and coordinate B-N bonds, was formed from boric acid-triethanolamine system. Pyrolysis of these condensation products in N//2 flow at 1400 degree C yielded boron nitride. A small amount of B//4C was also formed, depending on the molar ratio or on the carbon content of the condensation products.

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