Demand in energy is constany increasing due to the growing economies of fast developing countries as well as enormous consumption of fossil resources. Alternatives to petrochemichal processes for production of fuels, commodities and chemicals are strongly required. Biomass being a renewable resource can serve as a great platform for providing society with sustainable energy and fuels. Production of hydrogen is one of the most important chemical processes. This book, therefore, provides new information on a sustainable hydrogen production utilizing catalytic aqueous-phase reforming. The process has been studied using modern experimental methods followed by mathematical description of the results. Reaction mechanism has been elucidated, novel knowledge of reaction pathways has been presented. An importatn part is devoted to catalyst development for selective hydrogen production and establishing correlation between catalytic activity and catalyst structure. This book should be useful to professionals dealing with green energy, heterogeneous catalysis and chemical engineering or anyone else who is interested in green fules and energy.