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移动氢源用铝水反应制氢技术研究

         

摘要

Aluminum water reaction is a quick and effective technology for hydrogen production for fuel cell applications. The measures to improve the reaction of aluminum with water for hydrogen production were examined, the hydrogen production cost was compared, and the hydrogen production and use and residue recovery processes was designed. The experimental results show that the hydrogen production rate increases with the increase the effective alkali concentration, reaction temperature, and specific surface area of the aluminum powder. The sodium hydroxide and potassium hydroxide are found to improve the hydrogen production significantly. The maximum hydrogen production rates with both alkali presenting in the solution are almost the same. The promotion of calcium hydroxide on hydrogen production is significantly weaker than the first two. Under the same conditions, the magnesium hydroxide and aluminum hydroxide has almost no promotion on the aluminum water reaction. It is found that the sediment of the reaction can also promote the hydrogen production.%铝水反应可作为一种快捷有效的制氢技术为燃料电池提供氢源.考察了几种改善铝水反应制氢的途径,比较了铝水反应制氢成本,设计了氢气生产利用与残渣回收工艺.结果表明:提高碱液浓度、提高温度、增加铝粉的比表面积等都能有效地提高产氢速率;NaOH和KOH对铝水反应有明显的促进作用,二者的最大产氢速率基本相同;Ca(OH)2的促进作用明显弱于前两者;在相同的实验条件下,Mg(OH)2和Al(OH)3对铝水反应几乎无促进作用;沉淀的存在有助于铝水反应.

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