Research progress on catalytic dehydrogenation process intensification for liquid organic hydride carrier hydrogen storage
Hydrogen energy serves as an ideal intermediary for the clean and efficient utilization of fossil fuels and large-scale development of renewable energy.However,the storage and transportation of hydrogen are the key technical bottlenecks that limit the application of hydrogen energy.Liquid organic hydride carrier(LOHC)hydrogen storage technology,with its advantages of low cost,high hydrogen storage density,and safety,can be integrated into existing fossil fuel transport infrastructure,making it a promising solution for large-scale,long-distance,and distributed hydrogen storage and transportation scenarios.However,compared to more mature hydrogenation technologies,the efficiency and stability of LOHC dehydrogenation process are still not high enough in the storage cycle,which however is crucial for further development of LOHC storage technology.Herein,we provide a comprehensive review of the research progress and development trends in enhancing the catalytic dehydrogenation process for LOHC hydrogen storage technology.The review outlines the fundamental concepts of LOHC hydrogen storage and the principles of catalytic dehydrogenation reactions.It further summarizes the improvement strategies for the catalytic processes,product separation techniques,and energy efficiency.By analyzing the characteristics of different technical approaches,we point out the current challenges in the catalytic dehydrogenation process of LOHC hydrogen storage technology,including the development of dehydrogenation catalysts,enhancement of heat and mass transfer and optimization of energy efficiency,and highlight the research priorities and prospects in the future.
liquid organic hydride carrier(LOHC)hydrogen storageheat transfermass transfercatalystcatalyst support
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