An experimental study on bio-ethanol steam reforming in a catalytic membrane reactor. Part II: Reaction pressure, sweep factor and WHSV effects

A. Iulianelli, S. Liguori, T. Longo, S. Tosti, P. Pinacci, A. Basile

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Abstract

A catalytic Pd-Ag membrane reactor has been packed with a Co-Al2O3catalyst to perform the ethanol steam reforming reaction using a simulated bio-ethanol mixture (H2O/C2H5OH feed molar ratio = 18.7/1). In Part I of this work, low hydrogen recovery (≤30%) and CO-free hydrogen yield (≤20%) were obtained. In this second study the influence of higher pressure and sweep-gas flow rate was studied in order to improve the membrane reactor performances in terms of higher ethanol conversion, CO-free hydrogen yield and hydrogen recovery. The counter-current sweep-gas flow configuration was used for studying the effect of the reaction pressure and the sweep factor on the reaction system, while the co-current flow configuration was also considered for analysing the weight hourly space velocity effect. Moreover, a comparison with a traditional reactor working at the same MR operating conditions was also realized. As best results, the membrane reactor showed 100% ethanol conversion, 95.0% CO-free hydrogen recovery and ∼60.0% CO-free hydrogen yield, operating at 400 °C and 3.0 (abs) bar. © 2009 Professor T. Nejat Veziroglu.
Original languageEnglish
Pages (from-to)3159 - 3164
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number7
DOIs
Publication statusPublished - Apr 2010
Externally publishedYes

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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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