Perovskite NaCeTi2O6-Supported Ni Catalysts for CH4 Steam Reforming

Authors

  • Dr. Shenghong Zhang,

    Corresponding author
    1. Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan), Fax: (+81) 564-55-7351
    • Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan), Fax: (+81) 564-55-7351
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  • Dr. Satoshi Muratsugu,

    1. Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan), Fax: (+81) 564-55-7351
    2. The Graduate School of Advanced Science (SOKENDAI), 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan)
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  • Nozomu Ishiguro,

    1. Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan), Fax: (+81) 564-55-7351
    2. Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
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  • Prof. Dr. Shin-ichi Ohkoshi,

    1. Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
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  • Dr. Mizuki Tada

    Corresponding author
    1. Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan), Fax: (+81) 564-55-7351
    2. The Graduate School of Advanced Science (SOKENDAI), 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan)
    • Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 (Japan), Fax: (+81) 564-55-7351
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Abstract

Perovskite NaCeTi2O6 (NCT)-supported Ni catalysts were prepared and examined for the steam reforming of methane (SRM) with a low H2O/CH4 ratio (1:1), and their structures were characterized by means of powder XRD, energy dispersive X-ray spectroscopy high resolution TEM, temperature-programmed desorption of CO2, temperature-programmed reduction with H2, Ni K-edge/Ce LIII-edge X-ray absorption near edge structure spectroscopy and extended X-ray absorption fine structure . A 4 wt % Ni/NCT catalyst exhibited higher activity than 4 wt % Ni/TiO2, Ni/(CeO2+TiO2), and Ni/Ce2O3 catalysts for SRM reactions at 973 K, and better resistance to carbon deposition was observed on 4 wt % Ni/NCT compared to 4 wt % Ni/CeO2. It is suggested that the characteristic performance of the Ni/NCT catalysts for the SRM reactions are related to the basic character and oxygen conducting behavior of NCT to control the balance of CH4 decomposition and carbon gasification with steam on the surfaces of the Ni/NCT catalysts.

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