Production of renewable hydrogen by aqueous-phase reforming of glycerol over Ni–Cu catalysts derived from hydrotalcite precursors

Pablo V. Tuza, Robinson L. Manfro, Nielson F.P. Ribeiro and Mariana M.V.M. Souza

Renewable Energy, 2013, vol. 50, issue C, 408-414

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.

Keywords: Hydrogen; Glycerol; Aqueous-phase reforming; Ni–Cu catalysts; Hydrotalcites (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:50:y:2013:i:c:p:408-414

DOI: 10.1016/j.renene.2012.07.006

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