Steam reforming of toluene over perovskite-supported Ni catalysts

Yasushi Sekine, Daiki Mukai, Yuki Murai, Satoshi Tochiya, Yoshiyuki Izutsu, Kei Sekiguchi, Naomi Hosomura, Hirohisa Arai, Eiichi Kikuchi, Yukihiro Sugiura

    研究成果: Article

    55 引用 (Scopus)

    抄録

    Hydrogen production by steam reforming of toluene as a model aromatic hydrocarbon has been investigated with various Ni/perovskite catalysts. Among them, Ni/LaAlO3 catalyst showed high catalytic activity. Partial substitution of the La site of LaAlO3 support with other elements (Sr, Ba or Ca) was conducted for the Ni/LaAlO3 catalyst, and substitution with 30% Sr promoted catalytic activity and selectivity to hydrogen. Optimization for the Ni loading amount over Ni/La0.7Sr 0.3AlO3-δ catalyst revealed that 5 wt% Ni/La 0.7Sr0.3AlO3-δ had the highest toluene conversion and the smallest amount of carbon deposition. To elucidate the role of doped Sr, the catalytic natures of Sr-substituted catalyst Ni/La 0.7Sr0.3AlO3-δ and Sr-supported catalyst Ni/Sr/LaAlO3 were compared. Results show that Sr-ions should be incorporated in the LaAlO3 perovskite structure to show high catalytic performance. Based on results of transient response test with H 2 18O on Ni/La0.7Sr0.3AlO 3-δ, Ni/Sr/LaAlO3, and Ni/LaAlO3 at reaction temperature of 873 K, the formation of 18O-products was observed only on Ni/La0.7Sr0.3AlO3-δ catalyst derived from redox between the lattice oxygen in the perovskite and water. Lattice oxygen in the La0.7Sr0.3AlO 3-δ support worked as active oxygen species to enhance its catalytic nature.

    元の言語English
    ページ(範囲)160-167
    ページ数8
    ジャーナルApplied Catalysis A: General
    451
    DOI
    出版物ステータスPublished - 2013 1 31

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    Steam reforming
    Toluene
    Perovskite
    Catalysts
    Oxygen
    Catalyst activity
    Substitution reactions
    Aromatic Hydrocarbons
    Catalyst selectivity
    Aromatic hydrocarbons
    Hydrogen production
    Catalyst supports
    Transient analysis
    perovskite
    Hydrogen
    Reactive Oxygen Species
    Carbon
    Ions
    Water

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology

    これを引用

    Sekine, Y., Mukai, D., Murai, Y., Tochiya, S., Izutsu, Y., Sekiguchi, K., ... Sugiura, Y. (2013). Steam reforming of toluene over perovskite-supported Ni catalysts. Applied Catalysis A: General, 451, 160-167. https://doi.org/10.1016/j.apcata.2012.11.005

    Steam reforming of toluene over perovskite-supported Ni catalysts. / Sekine, Yasushi; Mukai, Daiki; Murai, Yuki; Tochiya, Satoshi; Izutsu, Yoshiyuki; Sekiguchi, Kei; Hosomura, Naomi; Arai, Hirohisa; Kikuchi, Eiichi; Sugiura, Yukihiro.

    :: Applied Catalysis A: General, 巻 451, 31.01.2013, p. 160-167.

    研究成果: Article

    Sekine, Y, Mukai, D, Murai, Y, Tochiya, S, Izutsu, Y, Sekiguchi, K, Hosomura, N, Arai, H, Kikuchi, E & Sugiura, Y 2013, 'Steam reforming of toluene over perovskite-supported Ni catalysts', Applied Catalysis A: General, 巻. 451, pp. 160-167. https://doi.org/10.1016/j.apcata.2012.11.005
    Sekine, Yasushi ; Mukai, Daiki ; Murai, Yuki ; Tochiya, Satoshi ; Izutsu, Yoshiyuki ; Sekiguchi, Kei ; Hosomura, Naomi ; Arai, Hirohisa ; Kikuchi, Eiichi ; Sugiura, Yukihiro. / Steam reforming of toluene over perovskite-supported Ni catalysts. :: Applied Catalysis A: General. 2013 ; 巻 451. pp. 160-167.
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    title = "Steam reforming of toluene over perovskite-supported Ni catalysts",
    abstract = "Hydrogen production by steam reforming of toluene as a model aromatic hydrocarbon has been investigated with various Ni/perovskite catalysts. Among them, Ni/LaAlO3 catalyst showed high catalytic activity. Partial substitution of the La site of LaAlO3 support with other elements (Sr, Ba or Ca) was conducted for the Ni/LaAlO3 catalyst, and substitution with 30{\%} Sr promoted catalytic activity and selectivity to hydrogen. Optimization for the Ni loading amount over Ni/La0.7Sr 0.3AlO3-δ catalyst revealed that 5 wt{\%} Ni/La 0.7Sr0.3AlO3-δ had the highest toluene conversion and the smallest amount of carbon deposition. To elucidate the role of doped Sr, the catalytic natures of Sr-substituted catalyst Ni/La 0.7Sr0.3AlO3-δ and Sr-supported catalyst Ni/Sr/LaAlO3 were compared. Results show that Sr-ions should be incorporated in the LaAlO3 perovskite structure to show high catalytic performance. Based on results of transient response test with H 2 18O on Ni/La0.7Sr0.3AlO 3-δ, Ni/Sr/LaAlO3, and Ni/LaAlO3 at reaction temperature of 873 K, the formation of 18O-products was observed only on Ni/La0.7Sr0.3AlO3-δ catalyst derived from redox between the lattice oxygen in the perovskite and water. Lattice oxygen in the La0.7Sr0.3AlO 3-δ support worked as active oxygen species to enhance its catalytic nature.",
    keywords = "Coke-formation, Hydrogen production, Lattice oxygen, Perovskite oxide, Steam reforming",
    author = "Yasushi Sekine and Daiki Mukai and Yuki Murai and Satoshi Tochiya and Yoshiyuki Izutsu and Kei Sekiguchi and Naomi Hosomura and Hirohisa Arai and Eiichi Kikuchi and Yukihiro Sugiura",
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    T1 - Steam reforming of toluene over perovskite-supported Ni catalysts

    AU - Sekine, Yasushi

    AU - Mukai, Daiki

    AU - Murai, Yuki

    AU - Tochiya, Satoshi

    AU - Izutsu, Yoshiyuki

    AU - Sekiguchi, Kei

    AU - Hosomura, Naomi

    AU - Arai, Hirohisa

    AU - Kikuchi, Eiichi

    AU - Sugiura, Yukihiro

    PY - 2013/1/31

    Y1 - 2013/1/31

    N2 - Hydrogen production by steam reforming of toluene as a model aromatic hydrocarbon has been investigated with various Ni/perovskite catalysts. Among them, Ni/LaAlO3 catalyst showed high catalytic activity. Partial substitution of the La site of LaAlO3 support with other elements (Sr, Ba or Ca) was conducted for the Ni/LaAlO3 catalyst, and substitution with 30% Sr promoted catalytic activity and selectivity to hydrogen. Optimization for the Ni loading amount over Ni/La0.7Sr 0.3AlO3-δ catalyst revealed that 5 wt% Ni/La 0.7Sr0.3AlO3-δ had the highest toluene conversion and the smallest amount of carbon deposition. To elucidate the role of doped Sr, the catalytic natures of Sr-substituted catalyst Ni/La 0.7Sr0.3AlO3-δ and Sr-supported catalyst Ni/Sr/LaAlO3 were compared. Results show that Sr-ions should be incorporated in the LaAlO3 perovskite structure to show high catalytic performance. Based on results of transient response test with H 2 18O on Ni/La0.7Sr0.3AlO 3-δ, Ni/Sr/LaAlO3, and Ni/LaAlO3 at reaction temperature of 873 K, the formation of 18O-products was observed only on Ni/La0.7Sr0.3AlO3-δ catalyst derived from redox between the lattice oxygen in the perovskite and water. Lattice oxygen in the La0.7Sr0.3AlO 3-δ support worked as active oxygen species to enhance its catalytic nature.

    AB - Hydrogen production by steam reforming of toluene as a model aromatic hydrocarbon has been investigated with various Ni/perovskite catalysts. Among them, Ni/LaAlO3 catalyst showed high catalytic activity. Partial substitution of the La site of LaAlO3 support with other elements (Sr, Ba or Ca) was conducted for the Ni/LaAlO3 catalyst, and substitution with 30% Sr promoted catalytic activity and selectivity to hydrogen. Optimization for the Ni loading amount over Ni/La0.7Sr 0.3AlO3-δ catalyst revealed that 5 wt% Ni/La 0.7Sr0.3AlO3-δ had the highest toluene conversion and the smallest amount of carbon deposition. To elucidate the role of doped Sr, the catalytic natures of Sr-substituted catalyst Ni/La 0.7Sr0.3AlO3-δ and Sr-supported catalyst Ni/Sr/LaAlO3 were compared. Results show that Sr-ions should be incorporated in the LaAlO3 perovskite structure to show high catalytic performance. Based on results of transient response test with H 2 18O on Ni/La0.7Sr0.3AlO 3-δ, Ni/Sr/LaAlO3, and Ni/LaAlO3 at reaction temperature of 873 K, the formation of 18O-products was observed only on Ni/La0.7Sr0.3AlO3-δ catalyst derived from redox between the lattice oxygen in the perovskite and water. Lattice oxygen in the La0.7Sr0.3AlO 3-δ support worked as active oxygen species to enhance its catalytic nature.

    KW - Coke-formation

    KW - Hydrogen production

    KW - Lattice oxygen

    KW - Perovskite oxide

    KW - Steam reforming

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