铝锡复合材料水解制氢性能研究

The hydrolysis property of aluminum-tin composites for hydrogen production

研究了铝锡复合材料与纯水反应过程中的产氢特性。所提及的铝锡复合材料全部采用机械球磨的方法制备而成。不同成分复合材料的相组成和表面形貌分别用X射线衍射仪(XRD)和扫描电子显微镜(SEM)进行表征。研究结果表明,增加金属Sn的含量、提高起始反应温度、添加助磨剂NaCl和添加低熔点金属(Bi、In等),可以提高铝锡复合材料的活性,增加产氢量以及产氢速率。通过调整添加剂种类和添加量得到成分比例(质量分数)为Al-6%Sn-2%Bi-2%In的合金在25℃的水浴中水解30min的产氢量为785.6mL/g,最大产氢速率可以达到175mL/(min·g)。

The hydrogen production of aluminum-tin（Al-Sn）composites in pure water was studied in this paper.The aluminum-tin（Al-Sn）composites mentioned in this paper were made by mechanical alloying.X-ray diffraction（XRD）and scanning electron microscopy（SEM）were used for the phase composition and microstructure.The result shows that the hydrogen production and hydrogen generation rate of Al-Sn composites can be improved by increasing the Sn content,improving the initial water temperature,adding grinding aid（NaCl）and low melting point（Bi,In etc.）by improving the activity of Al-Sn composites.The optimized percentage（wt%）Al-6%Sn-2%Bi-2% In composite by adjusting the types and contents of additives shows higher hydrogen production and hydrogen production rate,which reaches 785.6 mL/g and 175 mL/（min·g）in the pure water at 25 ℃.