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Catalytic behavior of Ru supported on Ce sub(0.8)Zr sub(0.2)O sub(2) for hydrogen production

Ru (2 wt.%) on Ce sub(0.8)Zr sub(0.2)O sub(2) catalysts were investigated to test their ethanol steam reforming (ESR) performance. The supports were obtained through two different synthesis methods: co-precipitation (PI) and mechanochemical reaction (MR). Characterization of the catalysts, before an...

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Published in:	Applied catalysis. B, Environmental Environmental, 2016-02, Vol.181, p.58-70
Main Authors:	Carbajal-Ramos, IA, Gomez, M F, Condo, AM, Bengio, S, Andrade-Gamboa, J J, Abello, M C, Gennari, F C
Format:	Article
Language:	English
Subjects:	Catalysis Catalysts Chemisorption Coprecipitation Ethyl alcohol Reduction Synthesis (chemistry) X-rays
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container_title	Applied catalysis. B, Environmental
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creator	Carbajal-Ramos, IA Gomez, M F Condo, AM Bengio, S Andrade-Gamboa, J J Abello, M C Gennari, F C
description	Ru (2 wt.%) on Ce sub(0.8)Zr sub(0.2)O sub(2) catalysts were investigated to test their ethanol steam reforming (ESR) performance. The supports were obtained through two different synthesis methods: co-precipitation (PI) and mechanochemical reaction (MR). Characterization of the catalysts, before and after ESR, were performed using X-ray powder diffraction (XRPD), nitrogen physisorption, CO chemisorption, temperature programmed reduction (TPR), high resolution transmission electron microscopy (HR-TEM), thermogravimetry, and X-ray photoelectron spectroscopy (XPS) measurements. The Ru (2 wt.%) PI catalyst exhibited the highest activity and selectivity to hydrogen and no coke deposition was observed during catalytic operation, even when compared to Ni (8 wt.%) PI catalyst. A possible reaction pathway is proposed. The remarkably good catalytic performance of Ru (2 wt.%) PI is regarded as being due to a combination of factors: improved metal dispersion on Ce sub(0.8)Zr sub(0.2)O sub(2), favorable metal-support interaction and water gas shift reaction promotion.
doi_str_mv	10.1016/j.apcatb.2015.07.025
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subjects	Catalysis Catalysts Chemisorption Coprecipitation Ethyl alcohol Reduction Synthesis (chemistry) X-rays
title	Catalytic behavior of Ru supported on Ce sub(0.8)Zr sub(0.2)O sub(2) for hydrogen production
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