About this Research Topic
A transformation in energy use is required for the world to meet its climate goals, improve the sustainability of urban environments, improve energy security, and reduce dependence on fossil fuels. Hydrogen is listed as the carbon-free fuel for energy uses, including energy-intensive industries, for transportation such as trucks, airplanes, ships, and heating applications. But the impact of decarbonization depends on how hydrogen is produced. Current and future supply options can be divided into blue hydrogen (based on fossil fuels with carbon capture, storage and utilization), green (based on water electrolysis) and biomass.
A hydrogen-based energy transition will not happen overnight. The use of hydrogen is likely to be employed in specific target applications. The need for a new supply infrastructure could limit hydrogen use to countries adopting this strategy. New technologies related to hydrogen, viewed as an energy vector, without neglecting its application in the chemical industry, whose demand will increase, will be of strategic importance within twenty years and present real technological challenges. Among these challenges is the fact that hydrogen is not free in nature and must be produced by consuming energy, so the process of obtaining it must be energy efficient. Furthermore, due to its physicochemical characteristics, hydrogen presents difficulties for its storage and transport.
These new technologies involve: the development of new materials for hydrogen storage that allow increasing the currently known volumetric densities, the development of new catalysts and photocatalysts for production and purification, the use of unconventional reactors, the use of biomass and natural gas as raw materials, the development of processes for the capture and confinement of CO2, one of the gases responsible for the greenhouse effect, the development of fuel cells.
This Research Topic is launched in the conviction that the problem of the hydrogen economy involves multiple disciplines and must be addressed in all its complexity. Considering three essential pillars for the different topics to be addressed:
• Development of Technologies in Hydrogen Production. With a perspective of the possible industrialization of renewable and low carbon Hydrogen Technologies that include gray H2, green H2 and blue H2.
• Transport and Distribution and Infrastructures and Storage. It includes equipment and hydrogen networks with zero emission, the associated problems and the potential of gas networks and management, penetration and efficiency, distribution and storage systems, including chemical systems.
• Uses and employment of H2. It includes from processing and transition systems in transport, fuel cells and battery-based electromobility, to other future technologies that connect with the sustainable conversion of CO2.
Keywords: Low Carbon Hydrogen Technologies, Hydrogen Transport, Hydrogen Distribution Systems, Hydrogen Storage, Hydrogen Infrastructures, CO2 Conversion
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