Effects of support and Rh additive on co-based catalysts in the ethanol steam reforming reaction

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Ferencz Z, Erdohelyi A, Baan K, Oszko A, Ovari L, Konya Z, Papp C, Steinrück HP, Kiss J
Zeitschrift: ACS Catalysis
Verlag: American Chemical Society
Jahr der Veröffentlichung: 2014
Band: 4
Heftnummer: 4
Seitenbereich: 1205-1218
ISSN: 2155-5435


Abstract


The effect of the nature of the support and the promotion achieved by a Rh additive on Co-based catalysts in the ethanol steam reforming reaction were studied. The catalysts with 2% Co loading were characterized by temperature-programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS). In situ diffuse reflectance Fourier-transform infrared spectroscopy (DRIFTS) identified the surface intermediates formed during the reaction, whereas gas phase products were detected by gas chromatography (GC). Upon heating in hydrogen to 773 K, cobalt could not be reduced to Co on alumina, but on silica the reduction was almost complete. On ceria, half of the Co could be reduced to the metallic state. By the presence of a small amount (0.1%) of Rh promoter, the reduction of both cobalt and ceria was greatly enhanced. For Co on the acidic AlO support, the dehydration mechanism was dominant, although on the basic CeO support, a significant amount of hydrogen was also formed. Addition of a small amount of Rh as promoter to the Co/CeO catalyst resulted in a significant further increase in the hydrogen selectivity. © 2014 American Chemical Society.



FAU-Autoren / FAU-Herausgeber

Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Autor(en) der externen Einrichtung(en)
University of Szeged / József Attila Tudományegyetem Szeged


Zitierweisen

APA:
Ferencz, Z., Erdohelyi, A., Baan, K., Oszko, A., Ovari, L., Konya, Z.,... Kiss, J. (2014). Effects of support and Rh additive on co-based catalysts in the ethanol steam reforming reaction. ACS Catalysis, 4(4), 1205-1218. https://dx.doi.org/10.1021/cs500045z

MLA:
Ferencz, Zs., et al. "Effects of support and Rh additive on co-based catalysts in the ethanol steam reforming reaction." ACS Catalysis 4.4 (2014): 1205-1218.

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Zuletzt aktualisiert 2018-09-08 um 01:55