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Surface-Controlled Conversion of Ammonia Borane from Boron Nitride
- 資料種別:
- 論文(リポジトリ)
- 責任表示:
- Nakagawa, Tessui ; Uesato, Hiroki ; Burrell, Anthony K. ; Ichikawa, Takayuki ; Miyaoka, Hiroki ; Davis, Benjamin L. ; Kojima, Yoshitsugu
- 言語:
- 英語
- 出版情報:
- MDPI, 2020-10-23
- 著者名:
Nakagawa, Tessui Uesato, Hiroki Burrell, Anthony K. Ichikawa, Takayuki Miyaoka, Hiroki Davis, Benjamin L. Kojima, Yoshitsugu - 掲載情報:
- Energies
- ISSN:
- 1996-1073
- 巻:
- 13
- 通号:
- 21
- バージョン:
- VoR
- 概要:
- “One-pot regeneration”, which is simple regneneration method of ammonia borane (AB) using hydrazine and liquid ammonia, enables conversion of AB from hexagonal boron nitride (h-BN) after milling hydrogenation. Solution ^<11&g
…
t;B-NMR revealed the presence of AB after NH_3/N_2H_4 treatment of milled h-BN (BNH_x) although the yield of AB was less than 5%. The conversion mechanism was clarified as B-H bonds on the h-BN surface created by ball-milling under hydrogen pressure have an ability to form AB, which was confirmed by Thermogravimetry-Residual Gas Analysis (TG-RGA) and Infrared (IR) analysis. The reaction routes are also the same as regeneration route of polyborazylene because intermediates of AB such as (B(NH_2)_3 and hydrazine borane were found by solution ^<11>B-NMR after soaking BNH_x in liquid NH_3 and hydrazine, respectively. Because of the fact that all reactions proceed on the h-BN surface and no reaction proceeds when neat h-BN is treated, breaking of B_3N_3 ring structure and then creation of B-H bond is the key issue to increase conversion yield of AB.
論文 続きを見る - URL:
- http://hdl.handle.net/20.500.12000/47495