The Monoammoniate of Lithium Borohydride, Li(NH3)BH4: An Effective Ammonia Storage Compound

被引：95

作者：

Johnson, Simon R. ^{[1
]}

David, William I. F. ^{[1
,2
]}

Royse, David M. ^{[1
]}

Sommariva, Marco ^{[2
]}

Tang, Christina Y. ^{[1
]}

Fabbiani, Francesca P. A. ^{[2
]}

Jones, Martin O. ^{[1
,2
]}

Edwards, Peter P. ^{[1
]}

机构：

[1] Univ Oxford, Inorgan Chem Lab, Oxford OX1 3QR, England

[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2009年 / 4卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

ammonia; hydrogen storage; lithium borohydride; thermochemistry; X-ray diffraction; HYDROGEN STORAGE; DECOMPOSITION; ECONOMY; SALTS; METAL; FUEL;

D O I：

10.1002/asia.200900051

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lithium borohydride absorbs anhydrous ammonia to form four stable ammoniates; Li(NH3)(n)BH4, mono-, di-, tri-, and tertraammoniate. This paper focuses on the monoammoniate, Li(NH3)BH4, which is readily formed on exposure of LiBH4 to ammonia at room temperature and pressure. Ammonia loss from Li(NH3)BH4 commences around 40 degrees C and the compound transforms directly to LiBH4. The crystal structure of Li(NH3)BH4 is reported here for the first time. Its close structural relationship with LiBH4 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.

引用

页码：849 / 854

页数：6

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