Formation and decomposition of AlH3 in the aluminum-hydrogen system

Saitoh, H.; Machida, A.; Katayama, Y.; Aoki, K.
October 2008
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p151918
Academic Journal
The pressure-temperature diagram of hydrogen-aluminum system was determined for a pressure range of 0–10 GPa and a temperature range of 27–800 °C by in situ x-ray diffraction measurements. Pristine aluminum was hydrogenated to trihydride at 8.9 GPa and 600 °C. The cyclic formation and decomposition of the hydride resulted in lowering of the hydrogenation conditions down to 4.9 GPa and 330 °C. Transparent single crystals were recovered at ambient conditions.


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