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Reversible Interconversion Between Methanol-diamine and Diamide for Hydrogen Storage Based on Manganese Catalyzed (de)hydrogenation

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Journal Nat Commun
Specialty Biology
Date 2020 Feb 1
PMID 32001679
Citations 19
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Abstract

The development of cost-effective, sustainable, and efficient catalysts for liquid organic hydrogen carrier systems is a significant goal. However, all the reported liquid organic hydrogen carrier systems relied on the use of precious metal catalysts. Herein, a liquid organic hydrogen carrier system based on non-noble metal catalysis was established. The Mn-catalyzed dehydrogenative coupling of methanol and N,N'-dimethylethylenediamine to form N,N'-(ethane-1,2-diyl)bis(N-methylformamide), and the reverse hydrogenation reaction constitute a hydrogen storage system with a theoretical hydrogen capacity of 5.3 wt%. A rechargeable hydrogen storage could be achieved by a subsequent hydrogenation of the resulting dehydrogenation mixture to regenerate the H-rich compound. The maximum selectivity for the dehydrogenative amide formation was 97%.

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