The monoammoniate of lithium borohydride, Li(NH3)BH4: an effective ammonia storage compound.
The monoammoniate of lithium borohydride, Li(NH3)BH4: an effective ammonia storage compound.
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DOI：
10.1002/asia.200900051
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发表时间：
2009-06
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通讯作者：
Simon R. Johnson;W. David;D. Royse;M. Sommariva;C. Tang;F. Fabbiani;M. Jones;P. Edwards
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文献类型：
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作者：
Simon R. Johnson;W. David;D. Royse;M. Sommariva;C. Tang;F. Fabbiani;M. Jones;P. Edwards
硼氢化锂吸附无水氨形成四种稳定的氨化物；Li(NH(3))(n)BH(4)，一，二，三，和三氨化。本文主要研究了单氨酸盐Li(NH(3))BH(4)，它是LiBH(4)在室温常压下暴露于氨中容易形成的。Li(NH(3))BH(4)的氨损失在40℃左右开始，化合物直接转化为LiBH(4)。本文首次报道了Li(NH(3))BH(4)的晶体结构。它与LiBH(4)密切的结构关系为氨吸收和损失的简单性质和机制提供了清晰的见解。这些材料不仅代表了一个优秀的高重量百分比的氨系统，而且也是潜在的重要的氢储存。
Lithium borohydride absorbs anhydrous ammonia to form four stable ammoniates; Li(NH(3))(n)BH(4), mono-, di-, tri-, and tertraammoniate. This paper focuses on the monoammoniate, Li(NH(3))BH(4), which is readily formed on exposure of LiBH(4) to ammonia at room temperature and pressure. Ammonia loss from Li(NH(3))BH(4) commences around 40 degrees C and the compound transforms directly to LiBH(4). The crystal structure of Li(NH(3))BH(4) is reported here for the first time. Its close structural relationship with LiBH(4) provides a clear insight into the facile nature and mechanism of ammonia uptake and loss. These materials not only represent an excellent high weight-percent ammonia system but are also potentially important hydrogen stores.