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Topics in Catalysis
Erschienen in: Topics in Catalysis 18-20/2013

01.12.2013 | Original paper

Ethanol Steam Reforming Over Hydrotalcite-Derived Co Catalysts Doped with Pt and Rh

verfasst von: Raúl Espinal, Elena Taboada, Elies Molins, Ricardo J. Chimentao, Francesc Medina, Jordi Llorca

Erschienen in: Topics in Catalysis | Ausgabe 18-20/2013

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Abstract

Honeycomb structures loaded with hydrotalcite-derived cobalt catalysts doped with various amounts of Pt and Rh have been tested in the steam reforming of ethanol at 523–823 K under different operational conditions. Catalysts promoted with noble metals are significantly more active than non-promoted hydrotalcite-derived cobalt but, at the same time, they build up carbon very efficiently. Electron microscopy, magnetic measurements and X-ray photoelectron spectroscopy reveal the occurrence of metal cobalt nanoparticles in the samples promoted with noble metals after reaction. According to the TPR profiles recorded over the hydrotalcite-derived cobalt catalysts doped with Pt and Rh, it is concluded that noble metals strongly promote cobalt reduction under ethanol steam reforming (ESR) conditions. Cobalt nanoparticles thus formed are very active for ethanol reforming but, at the same time, they originate severe carbon deposition. In contrast, non-promoted hydrotalcite-derived cobalt catalysts are less active for ESR but do not form carbon due to the absence of metallic cobalt.
Vorheriger Artikel Ethanol Steam Reforming on Co/CeO2: The Effect of ZnO Promoter
Nächster Artikel Role of Pt in the Activity and Stability of PtNi/CeO2–Al2O3 Catalysts in Ethanol Steam Reforming for H2 Production

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Metadaten
Titel
Ethanol Steam Reforming Over Hydrotalcite-Derived Co Catalysts Doped with Pt and Rh
verfasst von
Raúl Espinal
Elena Taboada
Elies Molins
Ricardo J. Chimentao
Francesc Medina
Jordi Llorca
Publikationsdatum
01.12.2013
Verlag
Springer US
Erschienen in
Topics in Catalysis / Ausgabe 18-20/2013
Print ISSN: 1022-5528
Elektronische ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-013-0100-8

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