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

Ferencz Z, Erdohelyi A, Baan K, Oszko A, Ovari L, Konya Z, Papp C, Steinrück HP, Kiss J (2014)

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Publication Type: Journal article, Original article

Publication year: 2014

Journal

Original Authors: Ferencz Z., Erdohelyi A., Baan K., Oszko A., Ovari L., Konya Z., Papp C., Steinrück H.-P., Kiss J.

Publisher: American Chemical Society

Book Volume: 4

Pages Range: 1205-1218

Journal Issue: 4

DOI: 10.1021/cs500045z

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.

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How to cite

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://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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