Reversible interconversion between methanol-diamine and diamide for hydrogen storage based on manganese catalyzed (de)hydrogenation

Zhihui Shao, Yang Li, Chenguang Liu, Wenying Ai, Shu-Ping Luo and Qiang Liu ()
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Zhihui Shao: Tsinghua University
Yang Li: Tsinghua University
Chenguang Liu: Tsinghua University
Wenying Ai: Tsinghua University
Shu-Ping Luo: Zhejiang University of Technology
Qiang Liu: Tsinghua University

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: 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 H2-rich compound. The maximum selectivity for the dehydrogenative amide formation was 97%.

Date: 2020
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DOI: 10.1038/s41467-020-14380-3

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