In this paper, graphite and Fe₂O₃ are introduced into MgH₂ powder by the method of hydrogenation after magnetic grinding. Hydrogen storage materials which composite of MgH₂–5 wt.% C and MgH₂–5 wt.% C–5 wt.% Fe₂O₃ are successfully prepared. The physical structure of these materials was analyzed and characterized by XRD, SEM, etc. Furthermore, the influence of graphite and Fe₂O₃ on the hydrolysis of MgH₂ was systematically investigated. The results show that MgH₂–C–Fe₂O₃ composite powder has the fastest hydrogen release rate in municipal drinking water and the highest conversion rate. Graphite and Fe₂O₃ can effectively reduce the activation energy of the hydrolysis reaction of MgH₂ and improve the hydrolysis kinetics of MgH₂. The synergistic effect of the coaddition of graphite and Fe₂O₃ can significantly increase the hydrolysis conversion rate of MgH₂ and improve the hydrolysis kinetics.

中文翻译：

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石墨和Fe2O3添加对镁基储氢材料水解动力学的影响

本文通过磁力研磨后的氢化方法，将石墨和Fe ₂ O ₃引入MgH ₂粉末中。成功制备了由MgH ₂ -5 wt。％C和MgH ₂ -5 wt。％C-5 wt。％Fe ₂ O ₃组成的储氢材料。通过XRD，SEM等对这些材料的物理结构进行了分析和表征。此外，系统地研究了石墨和Fe ₂ O ₃对MgH ₂水解的影响。结果表明，MgH ₂ -C-Fe ₂ O ₃复合粉在城市饮用水中的氢释放速率最快，转化率最高。石墨和Fe ₂ ö ₃可以有效地减少的MgH的水解反应的活化能₂和改善的MgH的水解动力学₂。石墨和Fe ₂ O ₃的共添加的协同作用可以显着提高MgH ₂的水解转化率并改善水解动力学。