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  • NaBH4 regeneration from NaBO2 by high-energy ball milling and its plausible mechanism

    Author(s)
    Lang, Chengguang
    Jia, Yi
    Liu, Jiangwen
    Wang, Hui
    Ouyang, Liuzhang
    Zhu, Min
    Yao, Xiangdong
    Griffith University Author(s)
    Jia, Yi
    Year published
    2017
    Metadata
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    Abstract
    In this paper, we developed an easy and simple method (high-energy ball milling) for recycling NaBO2 (the hydrolysis byproduct) back to NaBH4 by a reaction with MgH2. To optimize the yield of NaBH4, we investigated the effect of four parameters, e.g. the ball milling time, the molar ratio of MgH2/NaBO2, H2 pressure and addition of methanol, on the NaBH4 regeneration. Accordingly, the maximum yield of NaBH4 (89 wt. %) was achieved. The mechanism of NaBH4 regeneration has been discussed. It is indicated that the NaBH4 formation involves a two-step substitution in which NaBOH2 is an intermediate confirmed by solid-state nuclear ...
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    In this paper, we developed an easy and simple method (high-energy ball milling) for recycling NaBO2 (the hydrolysis byproduct) back to NaBH4 by a reaction with MgH2. To optimize the yield of NaBH4, we investigated the effect of four parameters, e.g. the ball milling time, the molar ratio of MgH2/NaBO2, H2 pressure and addition of methanol, on the NaBH4 regeneration. Accordingly, the maximum yield of NaBH4 (89 wt. %) was achieved. The mechanism of NaBH4 regeneration has been discussed. It is indicated that the NaBH4 formation involves a two-step substitution in which NaBOH2 is an intermediate confirmed by solid-state nuclear magnetic resonance (NMR).
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    Journal Title
    International Journal of Hydrogen Energy
    Volume
    42
    DOI
    https://doi.org/10.1016/j.ijhydene.2017.04.014
    Subject
    Chemical sciences
    Engineering
    Chemical engineering design
    Publication URI
    http://hdl.handle.net/10072/382586
    Collection
    • Journal articles

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