Regeneration of spent-NaBH4 back to NaBH4 by using high-energy ball milling

Chan Li Hsueh, Cheng Hong Liu, Bing-Hung Chen, Chuh-Yung Chen, Yi Chia Kuo, Kuo Jen Hwang, Jie Ren Ku

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50 Citations (Scopus)

Abstract

High-energy ball milling was employed to regenerate spent-sodium borohydride, i.e., mainly the sodium metaborate (NaBO2), back to sodium borohydride (NaBH4) by a reaction with magnesium hydride (MgH2). The samples were characterized using scanning electron microscopy (SEM), Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy, X-ray diffraction (XRD) and nuclear magnetic resonance (NMR) spectroscopy. In general, as the ball-milling duration increases, the yield of NaBH4 increases accordingly and leads to an extreme value of 76%, when MgH2 in stoichiometric excess by 40% was initially present in ball mills.

Original languageEnglish
Pages (from-to)1717-1725
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number4
DOIs
Publication statusPublished - 2009 Feb 1

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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