Home > Publications database > In situ synchrotron radiation powder X-ray diffraction study of the 2$LiNH_{2}$+$LiH+KBH_{4}$ system |
Journal Article/Contribution to a conference proceedings | DESY-2013-01542 |
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2013
Elsevier
Lausanne
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Please use a persistent id in citations: doi:10.1016/j.jallcom.2013.02.175 doi:10.3204/DESY-2013-01542
Abstract: In the present work we focus on the 2LiNH2 + KBH4 + LiH system: the phase-structural transformations occurring during the desorption process on the powder mixture are described by in situ synchrotron radiation powder X-ray diffraction (SR-PXD), high-pressure differential scanning calorimetry and manometric measurements. It is observed that LiNH2 transforms into Li2NH during heating, at about 160 °C, while the reflections related to KBH4 disappeared at 380 °C. At higher temperature, the formation of Li3BN2 is detected, together with an evident increase of the background, ascribable to the presence of a further phase in the molten state. Patterns at room temperature, after cooling down the sample, confirm the presence of Li3BN2 and KH as reported in the theoretical study. For the as prepared mixture it is possible to achieve the theoretical hydrogen gravimetric capacity of 7.4 wt%.
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