Low-temperature synthesis of ammonia borane using diborane and ammonia

• DOI: 10.1016/j.ijhydene.2015.03.100
• Publication Date: 2015-04-16T00:30:30Z
• Authors: Ho Yun Choi; Sung Jin Park; Dongho Seo; Jong-min Baek; Han Dock Song; Sung Jin Jung; Kun Jong Lee; Young Lae Kim
• Keywords: Ammonia Borane; Diborane; Solid hydrogen; Boranes; Ammonia production; Boranes

Abstract Ammonia borane (NH 3 BH 3 ), as a source material for energy generation and hydrogen storage, has attracted growing interest due to its high hydrogen content. We have investigated the synthesis of ammonia borane from diborane (B 2 H 6 ) and ammonia (NH 3 ) utilizing a low-temperature process. From our results, a maximum synthetic yield of 92.2% was obtained, for an ammonia borane complex of 0.35 M. The diammoniate diborane (DADB) was detected in about 5–10 mol% within the solid ammonia borane by solid-state 11 B-NMR analysis. The synthesized solid ammonia borane products were studied to characterize hydrogen release upon thermal dehydrogenation.