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    A new Gd-promoted nickel catalyst for methane conversion to syngas and as an anode functional layer in a solid oxide fuel cell

    Access Status
    Fulltext not available
    Authors
    Wang, W.
    Su, C.
    Ran, R.
    Shao, Zongping
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Wang, W. and Su, C. and Ran, R. and Shao, Z. 2011. A new Gd-promoted nickel catalyst for methane conversion to syngas and as an anode functional layer in a solid oxide fuel cell. Journal of Power Sources. 196 (8): pp. 3855-3862.
    Source Title
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2010.12.072
    ISSN
    0378-7753
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/19253
    Collection
    • Curtin Research Publications
    Abstract

    The effect of lanthanide promoters on a Ni-Al2O3 catalyst for methane partial oxidation, steam reforming and CO2 reforming at 600-850 °C is systematically investigated. The promoters include La2O3, CeO2, Pr2O 3, Sm2O3 and Gd2O3. GdNi-Al2O3 shows comparable catalytic activity to LaNi-Al2O3 and PrNi-Al2O3 but higher activity than CeNi-Al2O3 and SmNi-Al2O 3 for all three reactions. The O2-TPO results show that GdNi-Al2O3 possesses the best coke resistance among those tested. It also displays good stability at 850 °C for 300 h. Raman spectroscopy indicates that the addition of lanthanide promoters can reduce the degree of graphitization of the carbon deposited on Ni-Al2O 3. The GdNi-Al2O3 is further applied as an anode functional layer in solid-oxide fuel cells operating on methane. The cell yields peak power densities of 1068, 996 and 986 mW cm-2 at 850 °C, respectively, for operating on methane-O2, methane-H 2O and methane-CO2 gas mixtures, which is comparable to operating on hydrogen fuel. GdNi-Al2O3 is promising as a highly coking-resistant catalyst layer for solid-oxide fuel cells. © 2010 Elsevier B.V. All rights reserved.

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