Low temperature-ethanol steam reforming over Ni-based catalysts supported on CeO2

  • Filomena Castaldo University of Salerno-Department of Industrial Engineering
  • Vincenzo Palma
  • Concetta Ruocco
  • Paolo Ciambelli
  • Gaetano Iaquaniello


Recent research has been focused on methods to produce hydrogen. There is growing interest in the properties ofhydrogen as an energy carrier and the prospects look good for hydrogen use in fuel cell applications, especially whenproduction processes involve clean, renewable sources.Although natural gas steam reforming is the most common way to obtain hydrogen, ethanol steam reforming (ESR)may reduce the dependence on fossil fuels and cut harmful emissions.The ESR reaction is promoted at high temperatures, being strongly endothermic, but in some cases it can be performedat low temperatures, using this process as a pre-reforming step before conventional methane steam reforming (MSR).The low temperature range could reduce: the thermal duty, costs and CO formation, making the produced hydrogencapable of being fed into a fuel cell.The performances of Ni-based catalysts for ethanol steam reforming in a low temperature range (LT-ESR) were evaluated.In particular, the activity of bimetallic samples, prepared by impregnation and coprecipitation, was monitoredin both diluted and concentrated feed stream conditions. By comparing bimetallic catalysts with monometallic onesprepared at dierent Pt or Ni loadings, it was possible to identify the most suitable sample. 3%wtPt / 10wt%Ni / CeO2obtained by impregnation achieved the highest performances in terms of both H2 yield and durability, allowing perfectagreement with thermodynamic data. However, during stability tests, reaction plugging phenomena occurred. By changingthe water-to-ethanol molar ratio from 3 to 6, a considerable increase in durability was observed. The investigationof exhaust catalysts through various characterization techniques was helpful for studying in detail possible sintering ordeactivation occurrence.

Author Biography

Filomena Castaldo, University of Salerno-Department of Industrial Engineering
Via casa rega 20, 83020, Domicella (AV), Italy


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How to Cite
CASTALDO, Filomena et al. Low temperature-ethanol steam reforming over Ni-based catalysts supported on CeO2. Journal of Power Technologies, [S.l.], v. 95, n. 1, p. 54--66, mar. 2015. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/441>. Date accessed: 23 july 2021.
Renewable and Sustainable Energy


bimetallic catalysts; bio-ethanol; hydrogen; steam reforming

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