ABSTRACT
Hydrogen is considered to be one of the new generation fuels for the future replacing fossil fuels. Currently, hydrogen is mainly produced by steam reforming of methane and oil-derived hydrocarbons (95% of total hydrogen production). These processes emit CO2 to the environment, therefore, zero-emission green hydrogen produced from green resources is essential and necessary. Steam reforming of ethanol is one of the promising processes to produce green hydrogen. This chapter summarizes the recent catalysts, their supports and promoters, the reaction conditions, and the mechanisms. It covers noble metal catalysts, nickel (Ni) and cobalt (Co) catalysts for the steam reforming of bioethanol fuels and discusses the effects of the operating and reaction conditions, membrane-assisted ethanol steam reforming(ESR), and reaction mechanisms ofESR. These studies hint that the operating conditions of ESR can be optimized using a wide set of catalysts and catalyst supports as well as catalyst promoters to obtain a high biohydrogen yield.
