Characterization and activity test of commercial Ni/Al2O 3, Cu/ZnO/Al2O3 and prepared Ni-Cu/Al 2O3 catalysts for hydrogen production from methane and methanol fuels

Martin Khzouz, Joe Wood, Bruno Pollet, Waldemar Bujalski

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

In this study, methane and methanol steam reforming reactions over commercial Ni/Al2O3, commercial Cu/ZnO/Al 2O3 and prepared Ni-Cu/Al2O3 catalysts were investigated. Methane and methanol steam reforming reactions catalysts were characterized using various techniques. The results of characterization showed that Cu particles increase the active particle size of Ni (19.3 nm) in Ni-Cu/Al2O3 catalyst with respect to the commercial Ni/Al2O3 (17.9). On the other hand, Ni improves Cu dispersion in the same catalyst (1.74%) in comparison with commercial Cu/ZnO/Al2O3 (0.21%). A comprehensive comparison between these two fuels is established in terms of reaction conditions, fuel conversion, H2 selectivity, CO2 and CO selectivity. The prepared catalyst showed low selectivity for CO in both fuels and it was more selective to H2, with H2 selectivities of 99% in methane and 89% in methanol reforming reactions. A significant objective is to develop catalysts which can operate at lower temperatures and resist deactivation. Methanol steam reforming is carried out at a much lower temperature than methane steam reforming in prepared and commercial catalyst (275-325 °C). However, methane steam reforming can be carried out at a relatively low temperature on Ni-Cu catalyst (600-650°C) and at higher temperature in commercial methane reforming catalyst (700-800°C). Commercial Ni/Al2O3 catalyst resulted in high coke formation (28.3% loss in mass) compared to prepared Ni-Cu/Al2O3 (8.9%) and commercial Cu/ZnO/Al 2O3 catalysts (3.5%).

Original languageEnglish
Pages (from-to)1664-1675
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number3
DOIs
Publication statusPublished - 6 Feb 2013
Externally publishedYes

Keywords

  • Copper based catalyst
  • Fuel reformer
  • Hydrogen
  • Methane steam reforming
  • Methanol steam reforming
  • Nickel based catalyst

ASJC Scopus subject areas

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

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