Regeneration of spent-NaBH sub(4 back to NaBH) sub(4) by using high-energy ball milling

High-energy ball milling was employed to regenerate spent-sodium borohydride, i.e., mainly the sodium metaborate (NaBO sub(2), back to sodium borohydride (NaBH) sub(4)) by a reaction with magnesium hydride (MgH sub(2). The samples were characterized using scanning electron microscopy (SEM), Fourier...

Full description

Saved in:
Bibliographic Details
Published in:International journal of hydrogen energy 2009-02, Vol.34 (4), p.1717-1725
Main Authors: Hsueh, Chan-Li, Liu, Cheng-Hong, Chen, Bing-Hung, Chen, Chuh-Yung, Kuo, Yi-Chia, Hwang, Kuo-Jen, Ku, Jie-Ren
Format: Article
Language:English
Subjects:
Ball milling
Borohydrides
Energy (nuclear)
Magnesium
Nuclear magnetic resonance
Scanning electron microscopy
Sodium
Spectroscopy
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High-energy ball milling was employed to regenerate spent-sodium borohydride, i.e., mainly the sodium metaborate (NaBO sub(2), back to sodium borohydride (NaBH) sub(4)) by a reaction with magnesium hydride (MgH sub(2). 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 NaBH) sub(4) increases accordingly and leads to an extreme value of 76%, when MgH sub(2 in stoichiometric excess by 40% was initially present in ball mills.)
ISSN:0360-3199
DOI:10.1016/j.ijhydene.2008.12.036