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Study of the controllable reactivity of aluminum alloys and their promising application for hydrogen generation

机译：铝合金可控反应性的研究及其在制氢中的应用前景

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摘要

The hydrolysis performances of two aluminum alloys are investigated as their reactivity can be controlled via the different additives. The additive of NaCl has the positive effect to improve the hydrolysis properties of the aluminum alloys with quicker hydrolysis kinetic and lower hydrolysis temperature. For examples, in 6 min of hydrolysis reaction, the Al-5 wt%Hg-5 wt%NaCl can produce 971 ml g~(-1) hydrogen, higher than 917 mL g~(-1) hydrogen from Al-10 wt%Hg alloy. The Al-In-NaCl alloy has lower hydrolysis temperature about 10 K than that of Al-In alloy. Meanwhile, the reactivity of Al alloys can be improved or reduced via the additive metals. It can be found that the additive cadmium can reduce the reactivity of Al-Hg alloy. The Al-Hg-Cd alloys can keep good stability at the moist atmosphere below 343 K and have excellent hydrolysis performance around 343-373 K. The debased reactivity of Al-Hg-Cd composite comes from the formation of CdHg_2 compounds in the milling process. But the additive Zn and Ga doped into the Al-In-NaCl alloys can quickly increase the reactivity of the alloy which can quickly react with water at room temperature and have high hydrogen yield up to the theoretic value. Therefore, it is a promising possibility that the controllable reactivity of aluminum alloys can be obtained through the different additive according to the practical request, and the Al alloys can produce pure hydrogen for the fuel cell via the hydrolysis reaction.
机译：研究了两种铝合金的水解性能，因为可以通过不同的添加剂控制其反应性。 NaCl添加剂具有改善铝合金的水解性能的积极作用，具有更快的水解动力学和更低的水解温度。例如，在水解反应的6分钟内，Al-5 wt％Hg-5 wt％NaCl可以产生971 ml g〜（-1）氢，高于917 mL g〜（-1）的Al-10 wt ％Hg合金。该Al-In-NaCl合金具有比Al-In合金低的约10K的水解温度。同时，可以通过添加金属来改善或降低铝合金的反应性。可以发现，添加镉可以降低Al-Hg合金的反应性。 Al-Hg-Cd合金在343 K以下的潮湿环境下可以保持良好的稳定性，并在343-373 K附近具有出色的水解性能。Al-Hg-Cd复合材料的降低的反应性来自于研磨过程中CdHg_2化合物的形成。但是掺入Al-In-NaCl合金中的添加剂Zn和Ga可以快速提高合金的反应性，该反应性在室温下可以与水快速反应，并具有很高的氢产率，直至达到理论值。因此，有可能通过根据实际需要通过添加不同的添加剂来获得铝合金的可控反应性，并且铝合金可以通过水解反应为燃料电池生产纯氢。

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  • 来源
    《Energy Conversion & Management》 |2010年第3期|594-599|共6页
  • 作者

    Mei-qiang Fan; rnLi-xian Sun; rnFen Xu;

  • 作者单位

    Department of Materials Science and Engineering, China Jiliang University, 258 Xueyuan Street, Hangzhou 310018, PR China Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China;

    rnMaterials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China;

    rnMaterials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hydrolysis performance; aluminum alloys; the additives;

    机译：水解性能铝合金添加剂;

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