Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress

The depletion of fossil fuels and rising global warming challenges encourage to find safe and viable energy storage and delivery technologies. Hydrogen is a clean, efficient energy carrier in various mobile fuel-cell applications and owned no adverse effects on the environment and human health. Howe...

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Main Authors: Purna Chandra Rao, Minyoung Yoon
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/13/22/6040
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author Purna Chandra Rao
Minyoung Yoon
author_facet Purna Chandra Rao
Minyoung Yoon
author_sort Purna Chandra Rao
collection DOAJ
description The depletion of fossil fuels and rising global warming challenges encourage to find safe and viable energy storage and delivery technologies. Hydrogen is a clean, efficient energy carrier in various mobile fuel-cell applications and owned no adverse effects on the environment and human health. However, hydrogen storage is considered a bottleneck problem for the progress of the hydrogen economy. Liquid-organic hydrogen carriers (LOHCs) are organic substances in liquid or semi-solid states that store hydrogen by catalytic hydrogenation and dehydrogenation processes over multiple cycles and may support a future hydrogen economy. Remarkably, hydrogen storage in LOHC systems has attracted dramatically more attention than conventional storage systems, such as high-pressure compression, liquefaction, and absorption/adsorption techniques. Potential LOHC media must provide fully reversible hydrogen storage via catalytic processes, thermal stability, low melting points, favorable hydrogenation thermodynamics and kinetics, large-scale availability, and compatibility with current fuel energy infrastructure to practically employ these molecules in various applications. In this review, we present various considerable aspects for the development of ideal LOHC systems. We highlight the recent progress of LOHC candidates and their catalytic approach, as well as briefly discuss the theoretical insights for understanding the reaction mechanism.
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spelling doaj.art-343eac82099a476a97993972a7a6680f2023-11-20T21:30:10ZengMDPI AGEnergies1996-10732020-11-011322604010.3390/en13226040Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent ProgressPurna Chandra Rao0Minyoung Yoon1Department of Chemistry & Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, KoreaDepartment of Chemistry & Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, KoreaThe depletion of fossil fuels and rising global warming challenges encourage to find safe and viable energy storage and delivery technologies. Hydrogen is a clean, efficient energy carrier in various mobile fuel-cell applications and owned no adverse effects on the environment and human health. However, hydrogen storage is considered a bottleneck problem for the progress of the hydrogen economy. Liquid-organic hydrogen carriers (LOHCs) are organic substances in liquid or semi-solid states that store hydrogen by catalytic hydrogenation and dehydrogenation processes over multiple cycles and may support a future hydrogen economy. Remarkably, hydrogen storage in LOHC systems has attracted dramatically more attention than conventional storage systems, such as high-pressure compression, liquefaction, and absorption/adsorption techniques. Potential LOHC media must provide fully reversible hydrogen storage via catalytic processes, thermal stability, low melting points, favorable hydrogenation thermodynamics and kinetics, large-scale availability, and compatibility with current fuel energy infrastructure to practically employ these molecules in various applications. In this review, we present various considerable aspects for the development of ideal LOHC systems. We highlight the recent progress of LOHC candidates and their catalytic approach, as well as briefly discuss the theoretical insights for understanding the reaction mechanism.https://www.mdpi.com/1996-1073/13/22/6040liquid-organic hydrogen carrier (LOHC)hydrogen storagehydrogenationdehydrogenationcatalyst
spellingShingle Purna Chandra Rao
Minyoung Yoon
Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress
Energies
liquid-organic hydrogen carrier (LOHC)
hydrogen storage
hydrogenation
dehydrogenation
catalyst
title Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress
title_full Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress
title_fullStr Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress
title_full_unstemmed Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress
title_short Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress
title_sort potential liquid organic hydrogen carrier lohc systems a review on recent progress
topic liquid-organic hydrogen carrier (LOHC)
hydrogen storage
hydrogenation
dehydrogenation
catalyst
url https://www.mdpi.com/1996-1073/13/22/6040
work_keys_str_mv AT purnachandrarao potentialliquidorganichydrogencarrierlohcsystemsareviewonrecentprogress
AT minyoungyoon potentialliquidorganichydrogencarrierlohcsystemsareviewonrecentprogress