Cu-Zn-Al based catalysts for low temperature bioethanol steam reforming by solar energy

G.S. Sau, F. Bianco, M. Lanchi, R. Liberatore, C.V. Mazzocchia, A. Spadoni, C.A. Tito, P. Tarquini, G. Diaz, F. Pin

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Abstract

Bioethanol steam reforming is one of the most promising route to produce hydrogen from a renewable liquid biofuel. Activity of two Cu-Zn-Al based catalysts was investigated at low temperatures, ranging from 420 to 500 °C, in view of temperature limitations associated with solar energy supply by parabolic trough technology. At 450 °C the space velocity effect was also investigated, by varying the weight hourly space velocity (WHSV) from 1.67 to 3.32 h-1. In each experimental conditions, together with the expected hydrogen and carbon dioxide, also methane, ethylene, acetaldehyde and diethylether were detect as products, so indicating the presence of several parallel reaction pathways. A good selectivity to ethanol reforming was obtained only at 500 °C (with values of the H2/CO2mol ratio of 3.4 and 4.5) with both catalysts, while at lower temperatures alcohol dehydration into acetaldehyde seemed to be the main reaction. © 2010 Professor T. Nejat Veziroglu.
Original languageEnglish
Pages (from-to)7280 - 7287
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number14
DOIs
Publication statusPublished - Jul 2010

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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