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    Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides

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    Type
    Article
    Authors
    Abdelkader, A.
    Daly, H.
    Saih, Youssef
    Morgan, K.
    Mohamed, M.A.
    Halawy, S.A.
    Hardacre, C.
    KAUST Department
    KAUST Catalysis Center (KCC)
    Date
    2013-05-03
    Online Publication Date
    2013-05-03
    Print Publication Date
    2013-07
    Permanent link to this record
    http://hdl.handle.net/10754/552352
    
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    Abstract
    Co3O4, Fe2O3 and a mixture of the two oxides Co-Fe (molar ratio of Co3O4/Fe 2O3 = 0.67 and atomic ratio of Co/Fe = 1) were prepared by the calcination of cobalt oxalate and/or iron oxalate salts at 500 C for 2 h in static air using water as a solvent/dispersing agent. The catalysts were studied in the steam reforming of ethanol to investigate the effect of the partial substitution of Co3O4 with Fe2O 3 on the catalytic behaviour. The reforming activity over Fe 2O3, while initially high, underwent fast deactivation. In comparison, over the Co-Fe catalyst both the H2 yield and stability were higher than that found over the pure Co3O4 or Fe 2O3 catalysts. DRIFTS-MS studies under the reaction feed highlighted that the Co-Fe catalyst had increased amounts of adsorbed OH/water; similar to Fe2O3. Increasing the amount of reactive species (water/OH species) adsorbed on the Co-Fe catalyst surface is proposed to facilitate the steam reforming reaction rather than decomposition reactions reducing by-product formation and providing a higher H2 yield. © Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
    Citation
    Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides 2013, 38 (20):8263 International Journal of Hydrogen Energy
    Publisher
    Elsevier BV
    Journal
    International Journal of Hydrogen Energy
    DOI
    10.1016/j.ijhydene.2013.04.009
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S0360319913008574
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ijhydene.2013.04.009
    Scopus Count
    Collections
    Articles; KAUST Catalysis Center (KCC)

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