Catalytic and Physical Properties of Ca2+-doped MgO

Masahiko Matsukata, Eiji Okanari, Ken Ichiro Kobayashi, Eiichi Kikuchi, Yoshiro Morita

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Ca2+ ions loaded on MgO surface markedly promoted catalytic activities of MgO for isomerization of 1-butene, hydrocarbon gasification with CO2 or O2, and the reverse water-gas shift reaction, although MgO itself was almost inactive after treatment at 1273K in air. Ca2+ ions also increased the basicity and basic strength of MgO. Strong basic sites catalyzed isomerization of 1-butene. In the course of impregnation with Ca(NO3)2, MgO (periclase) was completely transformed into hydrate (brucite) by the action of nitrate ions. It is considered that Ca2+ ions interfere with the transformation of surface arrangements accompanied with structural transformation from brucite (hcp) to periclase (fcc). It wasm found that most of Ca2+ ions aggregated to form particles of CaO on the surface of MgO while Ca2+ ions were highly dispersed on the surface of MgO when the MgO was prepared from basic carbonate salt involving calcium as an impurity.

    Original languageEnglish
    Pages (from-to)97-109
    Number of pages13
    JournalSekiyu Gakkaishi (Journal of the Japan Petroleum Institute)
    Volume32
    Issue number2
    DOIs
    Publication statusPublished - 1989

    Fingerprint

    Physical properties
    Ions
    Isomerization
    Butenes
    Water gas shift
    Alkalinity
    Hydrates
    Gasification
    Impregnation
    Carbonates
    Calcium
    Nitrates
    Catalyst activity
    Hydrocarbons
    Impurities
    Salts
    Air

    ASJC Scopus subject areas

    • Fuel Technology

    Cite this

    Catalytic and Physical Properties of Ca2+-doped MgO. / Matsukata, Masahiko; Okanari, Eiji; Kobayashi, Ken Ichiro; Kikuchi, Eiichi; Morita, Yoshiro.

    In: Sekiyu Gakkaishi (Journal of the Japan Petroleum Institute), Vol. 32, No. 2, 1989, p. 97-109.

    Research output: Contribution to journalArticle

    Matsukata, Masahiko ; Okanari, Eiji ; Kobayashi, Ken Ichiro ; Kikuchi, Eiichi ; Morita, Yoshiro. / Catalytic and Physical Properties of Ca2+-doped MgO. In: Sekiyu Gakkaishi (Journal of the Japan Petroleum Institute). 1989 ; Vol. 32, No. 2. pp. 97-109.
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    abstract = "Ca2+ ions loaded on MgO surface markedly promoted catalytic activities of MgO for isomerization of 1-butene, hydrocarbon gasification with CO2 or O2, and the reverse water-gas shift reaction, although MgO itself was almost inactive after treatment at 1273K in air. Ca2+ ions also increased the basicity and basic strength of MgO. Strong basic sites catalyzed isomerization of 1-butene. In the course of impregnation with Ca(NO3)2, MgO (periclase) was completely transformed into hydrate (brucite) by the action of nitrate ions. It is considered that Ca2+ ions interfere with the transformation of surface arrangements accompanied with structural transformation from brucite (hcp) to periclase (fcc). It wasm found that most of Ca2+ ions aggregated to form particles of CaO on the surface of MgO while Ca2+ ions were highly dispersed on the surface of MgO when the MgO was prepared from basic carbonate salt involving calcium as an impurity.",
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    AU - Kobayashi, Ken Ichiro

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    AU - Morita, Yoshiro

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