AL BACHA, Serge; PIGHIN, Santiago A.; URRETAVIZCAYA, Guillermina; ZAKHOUR, Mirvat; NAKHL, Michel; CASTRO, Facundo J.; BOBET, Jean-Louis

doi:10.1016/j.ijhydene.2020.05.214

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AL BACHA, Serge
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire de Chimie Physique des Matériaux [LCPM]
Plateforme de Recherche en NanoSciences et NanoTechnologie [PR2N]

PIGHIN, Santiago A.
Centro Atómico Bariloche [Argentine]

URRETAVIZCAYA, Guillermina
Centro Atómico Bariloche [Argentine]
Instituto Balseiro [Bariloche]

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Ce document a été publié dans

International Journal of Hydrogen Energy. 2020-08-21, vol. 45, n° 41, p. 20883 - 20893

Elsevier

Résumé en anglais

Ball milling strategy is of prime importance on the hydrolysis performance of Mg alloy waste. The effect of milling device (e.g. Fritsch Pulverisette 6 (P6) and Australian Uni-Ball-II (UB)), milling atmosphere (H2 and Ar), milling time, nature of the additives graphite and AlCl3 and synergetic effect by chronological or simultaneous addition were examined. An equivalence between both mills was established and it was shown that the process with the UB is 10 times longer than that with the P6 to acquire a similar material. Mg alloy milled without additives in the P6 under Ar for 10 h improves the hydrolysis performance. Using a single additive, the best hydrolysis performances are obtained with graphite (yield of 95% of total capacity reached in 5 minutes) due to the formation of a protective graphite layer. By incorporating both additives sequentially, the best material, from the hydrogen production point of view, was Mg alloy milled with G for 2 h and then with AlCl3 for 2 extra hours (full hydrolysis in 5 minutes). Mg alloy milled with the P6 were compared to those milled with the UB. Mg alloy milled with graphite or with sequential addition of G and AlCl3 under Ar generated more than 90% of their total capacity. Our results confirm that laboratory-milling strategy can be scaled-up to industrial scale.< Réduire

Mots clés en anglais

Mg alloy waste

Ball milling

Hydrolysis reaction

Hydrogen

Milling atmosphere

Synergetic effect

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Effect of ball milling strategy (milling device for scaling-up) on the hydrolysis performance of Mg alloy waste

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Résumé en anglais

Mots clés en anglais

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