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Conference paper

Production of Renewable Hydrogen by Aqueous-Phase Reforming of Glycerol Over Ni-Cu Catalysts Derived from Hydrotalcite Precursors

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1Escola de Química – Universidade Federal do Rio de Janeiro (UFRJ), Centro de Tecnologia, Bloco E, sala 206, CEP 21941-909, Rio de Janeiro/RJ, Brazil

Published
2 September 2012
Pages
158-169
Received
2 September 2012
DOI
10.65582/set.2012.018
Access
Open access, © 2012 Copyright WSSET
Download PDF12 pages · 476 KB

Abstract

Ni-Cu catalysts derived from hydrotalcite-like compounds were prepared and evaluated in aqueous-phase reforming of glycerol. The catalysts were characterized by chemical composition, textural analysis, crystalline structure and reducibility. The reaction was carried out in a batch reactor with solution of 10 wt.% glycerol, at 250 and 270 °C. A maximum glycerol conversion of 60% was achieved at 270 °C. In the gas phase, the H2 selectivity was always higher than 80% and formation of CO was very low (<3%) at 250 °C. The addition of Cu decreased the formation of methane. H2 is consumed during the reaction at 270 °C, mainly for Cu-containing catalysts, with simultaneous formation of propylene glycol in the liquid phase. Acetol, lactic acid and acetaldehyde were also formed in the liquid phase, at both temperatures.

© 2012 Copyright WSSET

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