H2 production from catalytic steam reforming of n-propanol over ruthenium and ruthenium-nickel bimetallic catalysts supported on ceria-alumina oxides with different ceria loadings

Meng Wang, Chak Tong AU, Suk Yin LAI*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Catalytic steam reforming of n-propanol was investigated over ruthenium and ruthenium-nickel bimetallic catalysts supported on ceria-alumina oxides with different ceria loading (0-10% CeO2 wt/wt). Catalysts were characterized by BET surface area analysis, powder X-ray diffraction, temperature programmed reduction and energy dispersive X-ray analysis with scanning electron microscopy. Steam reforming activity was tested in a fixed bed tubular flow reactor at 450 or 500 °C using a feed of n-propanol/water mixture at a molar ratio of 1:12 and a constant liquid feed rate of 0.1 ml min-1. The effluent gas was monitored by GC/TCD and the evolution of the rate of hydrogen formation and the product gas distribution as a function of time was studied. Calcination in air after the impregnation with RuCl3 was found to reduce ruthenium dispersion and lower steam reforming activity. Both high metal loading and sufficient ceria promotion are essential for active and stable performance. Otherwise, dehydration reaction dominates and catalyst deactivation became severe. Catalysts with 3 wt% Ru, 10 wt% Ni and 3 or 10 wt % ceria were found to be very reactive and stable at both 450 and 500 °C.

Original languageEnglish
Pages (from-to)13926-13935
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number40
DOIs
Publication statusPublished - 26 Oct 2015

Scopus Subject Areas

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

User-Defined Keywords

  • Ceria catalyst promotor
  • n-propanol steam reforming
  • Ruthenium catalyst
  • Ruthenium-nickel bimetallic catalysts

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