De-carbonated hydrogen. A challenge for energy transition

This book first discusses the role hydrogen can have in energy transition. For this purpose, it proposes an overview of its present economy, markets and actors, of its possible role in economy decarbonization, and of the role of electrolytic hydrogen in public policies. Then, it presents and comments the different systems of production of de-carbonated hydrogen by using water and electricity (thermolysis, photo-catalysis, electrolysis), by using biomass (pyrolysis and gasification, biogas reforming, thermochemical process, biological processes), or by using hydrocarbons with CO₂ capture and storage. It addresses the various aspects related to hydrogen packing: safety (standards, regulations), storage (technologies) and distribution (by ducts, road or rail transport, ship transport). After a comparison of the different production processes in terms of energy consumption, CO₂ emissions, and costs, the different actual or possible usages of hydrogen are overviewed: for industry, transport and building decarbonization, for electric power production