Design, economic evaluation, and market uncertainty analysis of LOHC-based, CO2 free, hydrogen delivery systems

Catalytic hydrogen storage in liquid hydrogen carriers

“…Lim et al detailed a large-scale (1000 m 3 per h H 2 ) LHC dehydrogenation system and evaluated 2-( N -methylbenzyl)pyridine in the process simulation. 154 These results illustrate the promise of N-heterocycles in LHC systems.…”

Electrochemically Activatable Liquid Organic Hydrogen Carriers and Their Applications

“…These factors present significant obstacles in the pursuit of a viable solution. , In contrast, LOHCs have recently received great attention as promising hydrogen storage media due to their ability to (un)­load significant amounts of hydrogen through thermochemical (de)­hydrogenation reactions. − In addition, environmental pollutants such as CO 2 and CO, NO x , and SO x are not generated during the (de)­hydrogenation of LOHCs, making them suitable as hydrogen carriers. However, the requirements of high temperatures (>300 °C) and pressures (about 30–50 bar) for the (de)­hydrogenation reactions create a formidable roadblock to their practical adoption. − In addition, the endothermic dehydrogenation of LOHC occurs at temperatures higher than those of hydrogenation, reducing the stability of the catalyst and shortening its lifespan. In order to address this issue, the use of LOHCs in the form of heteroaromatic compounds (mainly containing S and N) with low enthalpy of reaction during dehydrogenation has been considered.…”

Sustainability-inspired upcycling of waste polyethylene terephthalate plastic into porous carbon for CO2 capture

“…The technical, economic, and environmental factors were evaluated for different combinations of volumetric receiver reactors, molten salts, solar thermal power generation, and water electrolysis capabilities. Multiple liquid organic hydrogen storage systems, an emerging concept in hydrogen storage, were recently assessed to determine market uncertainty at the industrial-scale, 34 where underlying process simulation models were the key tools that allowed for reasonable quantitative comparisons. To analyze the energy and environmental efficiency of this process strictly in the context of systems having a similar size and function, the results from our study can be compared, for instance, with those of a previous study 35 in which an energy analysis was conducted to evaluate the feasibility of using CCS technology in fossil-fuel-based power plants.…”