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. 2021 May 17;60(21):11725-11729.
doi: 10.1002/anie.202017302. Epub 2021 Apr 12.

An Amine-Borane System Featuring Room-Temperature Dehydrogenation and Regeneration

Guojin Zhang  1 , Daniel Morrison  1 , Guochen Bao  1 , Haibo Yu  2 , Chang Won Yoon  3 , Taekyong Song  4 , Jihye Lee  4 , Alison T Ung  5 , Zhenguo Huang  1
Affiliations

An Amine-Borane System Featuring Room-Temperature Dehydrogenation and Regeneration

Guojin Zhang et al. Angew Chem Int Ed Engl. .

Abstract

Amine-borane complexes have been extensively studied as hydrogen storage materials. Herein, we report a new amine-borane system featuring a reversible dehydrogenation and regeneration at room temperature. In addition to high purity H2 , the reaction between ethylenediamine bisborane (EDAB) and ethylenediamine (ED) leads to unique boron-carbon-nitrogen 5-membered rings in the dehydrogenation product where one boron is tricoordinated by three nitrogen atoms. Owing to the unique cyclic structure, the dehydrogenation product can be efficiently converted back to EDAB by NaBH4 and H2 O at room temperature. This finding could lead to the discovery of new amine boranes with potential usage as hydrogen storage materials.

Keywords: amine-borane; boron; hydrogen storage; regeneration.

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References

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