Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides

Handle URI:
http://hdl.handle.net/10754/552352
Title:
Steam reforming of ethanol over Co3O4–Fe2O3 mixed oxides
Authors:
Abdelkader, A.; Daly, H.; Saih, Y.; Morgan, K.; Mohamed, M.A.; Halawy, S.A.; Hardacre, C.
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.
KAUST Department:
KAUST Catalysis Center (KCC)
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
Issue Date:
3-May-2013
DOI:
10.1016/j.ijhydene.2013.04.009
Type:
Article
ISSN:
03603199
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0360319913008574
Appears in Collections:
Articles; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAbdelkader, A.en
dc.contributor.authorDaly, H.en
dc.contributor.authorSaih, Y.en
dc.contributor.authorMorgan, K.en
dc.contributor.authorMohamed, M.A.en
dc.contributor.authorHalawy, S.A.en
dc.contributor.authorHardacre, C.en
dc.date.accessioned2015-05-06T13:17:37Zen
dc.date.available2015-05-06T13:17:37Zen
dc.date.issued2013-05-03en
dc.identifier.citationSteam reforming of ethanol over Co3O4–Fe2O3 mixed oxides 2013, 38 (20):8263 International Journal of Hydrogen Energyen
dc.identifier.issn03603199en
dc.identifier.doi10.1016/j.ijhydene.2013.04.009en
dc.identifier.urihttp://hdl.handle.net/10754/552352en
dc.description.abstractCo3O4, 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.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0360319913008574en
dc.rightsArchived with thanks to International Journal of Hydrogen Energy. http://creativecommons.org/licenses/by/3.0/en
dc.subjectSteam reformingen
dc.subjectEthanolen
dc.subjectHydrogenen
dc.subjectCobalt–iron catalysten
dc.subjectDRIFTS-MSen
dc.titleSteam reforming of ethanol over Co3O4–Fe2O3 mixed oxidesen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.identifier.journalInternational Journal of Hydrogen Energyen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionCenTACat, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, Northern Ireland, UKen
dc.contributor.institutionChemistry Department, Faculty of Science, South Valley University, Qena 83523, Egypten
kaust.authorSaih, Youssefen
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