Considering the expansion of the use of renewable energy in the future, the technology to store and transport hydrogen will be important. Hydrogen is gaseous at an ambient condition, diffuses easily, and its energy density is low. So liquid organic hydrogen carriers (LOHCs) have been proposed as a way to store hydrogen in high density. LOHC can store, transport, and use hydrogen at high density by hydrogenation and dehydrogenation cycles. In this review, we will focus on typical LOHCs, methylcyclohexane (MCH), 18H-dibenzyltoluene (DBT), and 12H-N-ethylcarbazole (NECZ), and summarize recent developments in dehydrogenation catalytic processes, which are key in this cycle.

考虑到将来扩展可再生能源的使用，存储和运输氢的技术将很重要。氢在环境条件下为气态，易于扩散，并且能量密度低。因此，已经提出了液态有机氢载体（LOHC）作为高密度存储氢的方法。LOHC可以通过氢化和脱氢循环以高密度存储，运输和使用氢。在这篇综述中，我们将重点介绍典型的LOHC，甲基环己烷（MCH），18H-二苄基甲苯（DBT）和12H-N-乙基咔唑（NECZ），并总结脱氢催化过程的最新进展，这是该循环的关键。