Brief review of hydrocarbon-reforming catalysts map for hydrogen production

Hydrogen energy, the cleanest fuel, presents extensive applications in renewable energy technologies such as fuel cells. However, the transition process from carbon-based (fossil fuel) energy to desired hydrogen energy is usually hindered by inevitable scientific, technological, and economic obstacles, which mainly involves complex hydrocarbon reforming reactions. Hence, this paper provides a systematic and comprehensive analysis focusing on the hydrocarbon reforming mechanism. Accordingly, recent related studies are summarized to clarify the intrinsic difference among the reforming mechanism. Aiming to objectively assess the activated catalyst and deactivation mechanism, the rate-determining steps of reforming process have been emphasized, summarized, and analyzed. Specifically, the effect of metals and supports on individual reaction processes is discussed followed by the metal-support interaction. Current tendency and research map could be established to promote the technology development and expansion of hydrocarbon reforming field. This review could be considered as the guideline for academics and industry designing appropriate catalysts.