Structure and activity of Ni/La0.7Sr0.3AlO 3-δ catalyst for hydrogen production by steam reforming of toluene

Daiki Mukai, Satoshi Tochiya, Yuki Murai, Masaya Imori, Yukihiro Sugiura, Yasushi Sekine

    Research output: Contribution to journalArticle

    19 Citations (Scopus)

    Abstract

    We investigated catalytic steam reforming of aromatic hydrocarbon using toluene as a model compound. Ni/La0.7Sr0.3AlO 3-δ catalyst showed high catalytic activity and low coke formation. Although the lattice oxygen in a perovskite-type support plays an important role for oxidizing CHx and coke precursor, the role of interaction between Ni and the support has not been clarified. In this study, Ni/La0.7Sr0.3AlO3-δ catalyst calcined at various temperatures (1073, 1173, 1273 and 1373 K) was prepared and used to elucidate the effect of Ni particle size on the lattice oxygen mobility. The Ni particle size increased concomitantly with increased calcination temperature, and the C1 yield decreased from 72.9 to 15.5%. Enhancement of lattice oxygen mobility by the decrease of Ni particle size was observed by transient response tests using H2 18O over Ni/La0.7Sr 0.3AlO3-δ calcined at various temperatures. The interface between Ni and perovskite support played an important role for oxidizing coke precursor by lattice oxygen.

    Original languageEnglish
    Pages (from-to)78-86
    Number of pages9
    JournalApplied Catalysis A: General
    Volume464-465
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Steam reforming
    Toluene
    Hydrogen production
    Catalyst activity
    Coke
    Oxygen
    Catalysts
    Particle size
    Perovskite
    Catalytic reforming
    Aromatic Hydrocarbons
    Aromatic hydrocarbons
    Transient analysis
    Calcination
    Temperature
    perovskite

    Keywords

    • Lattice oxygen mobility
    • Ni catalyst
    • Perovskite-type oxide support
    • Steam reforming of toluene

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology

    Cite this

    Structure and activity of Ni/La0.7Sr0.3AlO 3-δ catalyst for hydrogen production by steam reforming of toluene. / Mukai, Daiki; Tochiya, Satoshi; Murai, Yuki; Imori, Masaya; Sugiura, Yukihiro; Sekine, Yasushi.

    In: Applied Catalysis A: General, Vol. 464-465, 2013, p. 78-86.

    Research output: Contribution to journalArticle

    Mukai, Daiki ; Tochiya, Satoshi ; Murai, Yuki ; Imori, Masaya ; Sugiura, Yukihiro ; Sekine, Yasushi. / Structure and activity of Ni/La0.7Sr0.3AlO 3-δ catalyst for hydrogen production by steam reforming of toluene. In: Applied Catalysis A: General. 2013 ; Vol. 464-465. pp. 78-86.
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    AU - Imori, Masaya

    AU - Sugiura, Yukihiro

    AU - Sekine, Yasushi

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