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Surface-Controlled Conversion of Ammonia Borane from Boron Nitride

Author

Listed:
  • Tessui Nakagawa

    (Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan)

  • Hiroki Uesato

    (Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan)

  • Anthony K. Burrell

    (Materials Physics and Applications Division, Los Alamos National Laboratory, MS J514 Los Alamos National Laboratory, Los Alamos, NM 87575, USA)

  • Takayuki Ichikawa

    (Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan)

  • Hiroki Miyaoka

    (Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan)

  • Benjamin L. Davis

    (Materials Physics and Applications Division, Los Alamos National Laboratory, MS J514 Los Alamos National Laboratory, Los Alamos, NM 87575, USA)

  • Yoshitsugu Kojima

    (Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan)

Abstract

“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 B-NMR revealed the presence of AB after NH 3 /N 2 H 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 3 N 3 ring structure and then creation of B-H bond is the key issue to increase conversion yield of AB.

Suggested Citation

  • Tessui Nakagawa & Hiroki Uesato & Anthony K. Burrell & Takayuki Ichikawa & Hiroki Miyaoka & Benjamin L. Davis & Yoshitsugu Kojima, 2020. "Surface-Controlled Conversion of Ammonia Borane from Boron Nitride," Energies, MDPI, vol. 13(21), pages 1-9, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5569-:d:434000
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    References listed on IDEAS

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    1. Umit Bilge Demirci, 2020. "Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier," Energies, MDPI, vol. 13(12), pages 1-45, June.
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    Cited by:

    1. Carlos A. Castilla-Martinez & Romain Moury & Salem Ould-Amara & Umit B. Demirci, 2021. "Destabilization of Boron-Based Compounds for Hydrogen Storage in the Solid-State: Recent Advances," Energies, MDPI, vol. 14(21), pages 1-50, October.

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