In most of the Mg–Al alloys, Al forms with Mg the intermetallic compound Mg₁₇Al₁₂. In order to understand the hydrogen production from the Mg–Al alloys waste by the hydrolysis reaction in “model” seawater (i.e. 3.5 wt % NaCl), hydrolysis with Mg₁₇Al₁₂ was investigated. The effect of ball milling time, the nature of the additives (graphite, NaCl, MgCl₂ and AlCl₃) and the synergetic effects of both graphite and AlCl₃ were investigated. It has been established that increasing ball milling time up to 5 h is necessary to activate the intermetallic and to decrease sufficiently its crystallites and particles size. On one hand, the presence of AlCl₃ provides the best hydrolysis performance (14% of the theoretical hydrogen volume in 1 h). On the other hand, the mixture obtained by simultaneous addition of graphite and AlCl₃ shows the best hydrolysis performances with 16% of the theoretical H₂ volume reached in 1 h.

在大多数Mg-Al合金中，Al与Mg形成金属间化合物Mg ₁₇ Al ₁₂。为了了解在“模型”海水（即3.5 wt％NaCl）中通过水解反应从Mg-Al合金废料中制氢的方法，研究了Mg ₁₇ Al _12的水解作用。球磨时间的影响，添加剂（石墨，NaCl，MgCl ₂和AlCl ₃）的性质以及石墨和AlCl ₃的协同作用被调查了。已经确定增加球磨时间至5小时对于活化金属间化合物并充分降低其微晶和颗粒尺寸是必要的。一方面，AlCl ₃的存在提供了最佳的水解性能（1小时内理论氢气量的14％）。另一方面，通过同时添加石墨和AlCl ₃获得的混合物表现出最佳的水解性能，在1小时内达到了理论H ₂体积的16％。