optimized the process conditions with an 800 C steam reforming temperature and a steam-to-carbon ratio of 3.54. They analyzed the catalyst lifetimes with regard to stable hydrogen production and the prevention of coke formation on the catalyst surface, with raw materials continually fed over 4 h. It was found that of the catalysts being investigated, the NieAl catalyst had the greatest stability in terms of hydrogen production (56.46%). Karatzas and Nilsson [16] characterize an auto-thermal reformer intended to generate hydrogen by auto-thermally reforming (ATR) commercial diesel fuel (~ 10 ppm S) and jet fuel (~200 ppm S) for a 5 kWe PEMFC. In this study, they set out to show that a catalytic reformer could be utilized in mobile fuel cell applications to produce hydrogen fromdiesel fuel in an energy-efficient manner. Some research groups investigated ATR for solid oxide fuel cells (SOFCs). Xu et al.