Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides

A. Abdelkader, H. Daly, Y. Saih, K. Morgan, M.A. Mohamed, S.A. Halawy, C. Hardacre

Research output: Contribution to journalArticle

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Abstract

Co3O4, Fe2O3 and a mixture of the two oxides Co–Fe (molar ratio of Co3O4/Fe2O3 = 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 Fe2O3 on the catalytic behaviour. The reforming activity over Fe2O3, 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 Fe2O3 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.
Original languageEnglish
Pages (from-to)8263-8275
Number of pages13
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number20
DOIs
Publication statusPublished - 09 Jul 2013

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Steam reforming
mixed oxides
steam
Ethanol
ethyl alcohol
catalysts
Catalysts
Oxides
Reforming reactions
cobalt oxalates
water
Water
dispersing
oxalates
deactivation
Calcination
roasting
Byproducts
Cobalt
Substitution reactions

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Abdelkader, A., Daly, H., Saih, Y., Morgan, K., Mohamed, M. A., Halawy, S. A., & Hardacre, C. (2013). Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides. International Journal of Hydrogen Energy, 38(20), 8263-8275. https://doi.org/10.1016/j.ijhydene.2013.04.009
Abdelkader, A. ; Daly, H. ; Saih, Y. ; Morgan, K. ; Mohamed, M.A. ; Halawy, S.A. ; Hardacre, C. / Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides. In: International Journal of Hydrogen Energy. 2013 ; Vol. 38, No. 20. pp. 8263-8275.
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Abdelkader, A, Daly, H, Saih, Y, Morgan, K, Mohamed, MA, Halawy, SA & Hardacre, C 2013, 'Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides', International Journal of Hydrogen Energy, vol. 38, no. 20, pp. 8263-8275. https://doi.org/10.1016/j.ijhydene.2013.04.009

Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides. / Abdelkader, A.; Daly, H.; Saih, Y.; Morgan, K.; Mohamed, M.A.; Halawy, S.A.; Hardacre, C.

In: International Journal of Hydrogen Energy, Vol. 38, No. 20, 09.07.2013, p. 8263-8275.

Research output: Contribution to journalArticle

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