Catalytic activities and coking resistance of Ni/perovskites in steam reforming of methane

Kohei Urasaki, Yasushi Sekine, Sho Kawabe, Eiichi Kikuchi, Masahiko Matsukata

    Research output: Contribution to journalArticle

    124 Citations (Scopus)

    Abstract

    Steam reforming of methane for the purpose of hydrogen production was performed using nickel catalysts supported on a variety of perovskites, including LaAlO3, LaFeO3, SrTiO3, BaTiO 3, La0.4Ba0.6Co0.2Fe 0.8O3-8, to compare the catalytic activity and resistance to coking of these catalysts to those of the conventional Ni/α-Al 2O3 catalyst. Ni/LaAlO3 and Ni/SrTiO 3 showed high catalytic activities among the Ni/ perovskites and longer-term stabilities than the conventional catalyst. Temperature programmed oxidation of carbon deposited on used catalysts revealed that inactive carbon species detected on Ni/α-Al2O3 were not formed in the case of Ni/LaAlO3. The results of temperature programmed reduction confirmed that consumption and recovery of the lattice oxygen in perovskites occurred during the reaction, and that the reducibility of perovskites had a great impact on the steam reforming activity. The lattice oxygen in perovskites is considered to play important roles in promoting the oxidation of CH, fragments adsorbed on metallic nickel.

    Original languageEnglish
    Pages (from-to)23-29
    Number of pages7
    JournalApplied Catalysis A: General
    Volume286
    Issue number1
    DOIs
    Publication statusPublished - 2005 May 26

    Fingerprint

    Steam reforming
    Methane
    Coking
    Catalyst activity
    Catalysts
    Nickel
    Carbon
    Oxygen
    Oxidation
    Hydrogen production
    Catalyst supports
    Recovery
    Temperature

    Keywords

    • Coking
    • Hydrogen
    • Lattice oxygen
    • Ni/BaTiO
    • Ni/LaBaCoFeO
    • Ni/LaAlO
    • Ni/LaFeO
    • Ni/SrTiO
    • Steam reforming of methane

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology

    Cite this

    Catalytic activities and coking resistance of Ni/perovskites in steam reforming of methane. / Urasaki, Kohei; Sekine, Yasushi; Kawabe, Sho; Kikuchi, Eiichi; Matsukata, Masahiko.

    In: Applied Catalysis A: General, Vol. 286, No. 1, 26.05.2005, p. 23-29.

    Research output: Contribution to journalArticle

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    AU - Kawabe, Sho

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    AU - Matsukata, Masahiko

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