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  5. Reaction path for the thermal decomposition of alanates

Article | REF: RE111 V2

Reversible hydrogen storage in alanates

Authors: Junxian ZHANG, Fermin CUEVAS, Annick PERCHERON-GUÉGAN

Publication date: November 10, 2013, Review date: June 23, 2022

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5. Reaction path for the thermal decomposition of alanates

The decomposition of alanates gives rise to intermediate phases with a lower hydrogen content, due to the desorption of this gas. The stoichiometry of the intermediate phases and the amount of hydrogen released are different for each alanate family.

  • Alkaline tetra-alanates decompose and release hydrogen in three stages:

    • R1 :

    3  MAlH4→M3 AlH6+2  Al+3  H2
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Reaction path for the thermal decomposition of alanates
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