Magnesium hydride (MgH2) is a hydrogen-rich compound generating significant amounts of hydrogen in the process of hydrolysis, i.e., in the course of its chemical interaction with water or with aqueous solutions. This process is of great interest for the on-site hydrogen generation aimed at application of H2 as a fuel for PEM fuel cells. We propose a review of recent reference publications in the field and also present the results of our own research. The increase of the rates of H2 release and the completeness of transformation of MgH2 are two important goals, which can be attained by optimizing the size of the powders of MgH2 by ball milling, by using catalysts added to MgH2 and to aqueous solutions, and by increasing the interaction temperature. The effect of these parameters on the degree of conversion and the rates of hydrogen evolution are analyzed in detail and the best systems to reach the efficient hydrolysis performance are identified. The mechanism of catalytic hydrolysis is proposed, while further improvements of the process of hydrolysis are required and additional studies of this important topic are needed.

中文翻译：

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MgH2 水解制氢

氢化镁 (MgH2) 是一种富含氢的化合物，在水解过程中，即在与水或水溶液的化学相互作用过程中，会产生大量的氢。该过程对于旨在将 H2 用作 PEM 燃料电池燃料的现场制氢具有重要意义。我们建议对该领域最近的参考出版物进行审查，并介绍我们自己的研究结果。H2 释放速率的增加和 MgH2 转化的完全性是两个重要目标，可以通过球磨优化 MgH2 粉末的尺寸、使用添加到 MgH2 和水溶液中的催化剂以及通过提高相互作用温度。详细分析了这些参数对转化程度和析氢速率的影响，并确定了达到有效水解性能的最佳系统。提出了催化水解的机理，同时需要进一步改进水解过程，并且需要对这一重要课题进行额外的研究。