Abstract
An iso-octane fuel processor system with three different reaction stages, autothermal reforming (ATR) reaction of iso-octane, high temperature shift (HTS) and low temperature shift (LTS) reactions, was developed for applications in a fuel cell system. Catalytic properties of the prepared Ni/Fe/MgO/Al 2O 3 and Pt–Ni/CeO 2 or molybdenum carbide catalysts were compared to those of commercial NiO/CaO/Al 2O 3 and Cu/Zn/Al 2O 3 catalysts for ATR and LTS reaction, respectively. It was found that the prepared catalysts formulations in the fuel processor system were more active than those of the commercial catalysts. As the exit gas of iso-octane ATR over the Ni/Fe/MgO/Al 2O 3 catalyst was passed through Fe 3O 4–Cr 2O 3 catalyst for HTS and Mo 2C or Pt–Ni/CeO 2 catalyst for LTS reaction, the concentration of CO in hydrogen-rich stream was reduced to less than 2400 ppm. The results suggest that the iso-octane fuel processor system with prepared catalysts can be applied to PEMFC system when a preferential partial oxidation reaction is added to KIST iso-octane reformer system.
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