氢
制氢
复合数
锡
材料科学
活化能
水解
化学工程
氢燃料
化学
复合材料
冶金
物理化学
有机化学
工程类
作者
Lei Huang,Haiyang Yu,Chen Chen,Xing Zhou
标识
DOI:10.1016/j.ijhydene.2023.08.332
摘要
To prepare a kind of Al-based composite materials with high hydrogen performance, this study characterizes the influence of temperature on Al alloy's hydrogen generation performance and investigates the role of bismuth (Bi) and tin (Sn) in hydrogen generation. Hydrogen testing reveals that the hydrogen properties of Al–Sn–Bi composite materials are significantly improvs at 75 °C than they are at 50 °C. Al-3wt% Sn-7wt% Bi composite material, which has a hydrogen generation rate of 1620 mL·g−1·min−1 and activation energy of 39.06 kJ·mol−1, exhibits the best hydrogen performance. XRD results indicate that Sn and Bi play a role in promoting the Al/H2O reaction. SEM results show that hydrolysates are primarily fibrous Al(OH)3 at 50 °C, whereas honeycomb AlOOH and fibrous Al(OH)3 at 75 °C. In the reaction hydrolysates, AlOOH can promote the Al/H2O reaction, while Al(OH)3 is attached to the surface of AlOOH and inhibits the Al/H2O reaction.
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