Investigation on hydrogen production using multicomponent aluminum alloys at mild conditions and its mechanism
Investigation on hydrogen production using multicomponent aluminum alloys at mild conditions and its mechanism
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温和条件下多元铝合金制氢及其机理研究
DOI：
10.1016/j.ijhydene.2012.11.034
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发表时间：
2013-02-06
影响因子：
7.2
通讯作者：
Xie, Zhixiong
中科院分区：
文献类型：
--
作者：
Wang, Huihu;Chang, Ying;Xie, Zhixiong
采用机械合金化方法制备了以低熔点金属Ga、In、Sn为合金元素的系列铝合金。利用XRD和SEM等技术对不同铝合金的相组成和形貌进行了表征。研究了铝合金与水在温和条件下（室温中性水中）的析氢反应。结果表明，Al-Ga，Al-In，Al-Sn二元合金和Al-Ga-Sn三元合金均无氢产额。对Al Ga In和Al In Sn三元合金的氢产率进行了观察。Al-In-Sn合金比Al-Ga-In合金具有更快的产氢速率和更高的产氢率。在Al-Ga-In和Al-In-Sn三元系的基础上，四元系Al-Ga-In-Sn的产氢性能得到了很大的提高。优化后的Al-3%Ga-3%In-5%Sn合金在自来水中的氢转化效率接近100%。在蒸馏水或去离子水中，最高产氢速率可达1560 mL/g min。结果表明，液态Ga-In-Sn共晶对Al的脆化以及In_3Sn和InSn_4金属间化合物形成的活性点可能是由于Al-Ga-In-Sn合金在室温下具有较高的活性。版权所有（C）2012，氢能出版物有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
A series of Al alloys with low melting point metals Ga, In, Sn as alloy elements were fabricated using mechanical alloying method. The phase compositions and morphologies of different Al alloys were characterized by XRD and SEM techniques. The reaction of the Al alloys with water for hydrogen evolving at mild conditions (at room temperature in neutral water) was studied. The results showed that there were no hydrogen yields for binary Al-Ga, Al-In, Al-Sn and the ternary Al-Ga-Sn alloys. The hydrogen yields were observed for Al Ga In and Al In Sn ternary alloys. The Al-In-Sn alloys showed an even faster hydrogen generation rate and higher yields than Al-Ga-In alloys. Based on the ternary Al-Ga-In and Al-In-Sn system, the hydrogen production property of quaternary Al-Ga-In-Sn was greatly improved. The hydrogen conversion efficiency of the optimized Al-3%Ga-3%In-5%Sn alloy was nearly 100% in tap water. The highest hydrogen generation rate reached 1560 mL/g min in distilled water or deionized water. It was suggested that both the embrittlement of Al by liquid Ga-In-Sn eutectic and the active points formed by intermetallic compounds In3Sn and InSn4 may be attributed to the high activity of Al-Ga-In-Sn alloys at room temperature. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.