C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 6/04 (2006.01) C01B 3/00 (2006.01) C01B 31/04 (2006.01)
Patent
CA 2708518
The invention relates to a compacted material containing magnesium hydride and expanded natural graphite and to a method for preparing one such material including the following steps in which: (i) a powdered magnesium or magnesium hydride is mixed with a powdered graphite, and (ii) the mixture is shaped by means of compaction. The invention also relates to the use of said material for the storage of hydrogen as well as to a method for hydrogen storage and release from storage, including the following steps in which: (a) the aforementioned material is placed in a suitable hydrogen tank, (b) the material is placed under hydrogen pressure in pressure and temperature conditions that enable the hydrogen to be absorbed by the material, and (c) the hydrogen is desorbed from the material in pressure and temperature conditions that enable the desorption of the material.
L'invention concerne un matériau compacté comprenant de l'hydrure de magnésium et du graphite naturel expansé et un procédé de préparation d'un tel matériau comportant les étapes consistant à :(i) mélanger un hydrure de magnésium ou magnésium pulvérulent avec un graphite pulvérulent; et (ii) mettre en forme le mélange par compaction. Elle propose aussi l'utilisation du matériau décrit pour le stockage d'hydrogène ainsi qu'un procédé de stockage et déstockage d'hydrogène comportant les étapes consistant à : (a) introduire un matériau décrit dans un réservoir d'hydrogène approprié; (b) mettre le matériau sous pression d'hydrogène dans des conditions de pression et de température permettant l'absorption de l'hydrogène dans le matériau; et (c) désorber l'hydrogène du matériau dans des conditions de pression et de température permettant la désorption du matériau.
Chaise Albin
de Rango Patricia
Fruchart Daniel
Miraglia Salvatore
Olives Regis
Centre National de La Recherche Scientifique (c.n.r.s.)
Robic
Universite Joseph Fourier
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