Activated alumina as value-added byproduct from the hydrolysis of hierarchical nanoporous aluminum with pure water to generate hydrogen fuel
Activated alumina as value-added byproduct from the hydrolysis of hierarchical nanoporous aluminum with pure water to generate hydrogen fuel
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DOI：
10.1016/j.renene.2020.03.072
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发表时间：
2020-08
期刊：
影响因子：
8.7
通讯作者：
Timothy Lee;Jintao Fu;Victoria M. Basile;John S. Corsi;Zeyu Wang;E. Detsi
中科院分区：
文献类型：
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作者：
Timothy Lee;Jintao Fu;Victoria M. Basile;John S. Corsi;Zeyu Wang;E. Detsi
销售产氢反应的增值副产品是降低氢燃料成本的战略途径，以实现真正可持续的氢经济。金属水解是一种化学过程，它与金属氢氧化物一起产生氢；然而，在没有化学添加剂或极端反应条件下，很少观察到这种反应。之前，我们证明了分层纳米多孔铝可以在标准温度和压力条件下通过水解产生氢，而不需要任何添加剂。该方法的优点是联产纯氢氧化铝（Al(OH)3）。在这里，我们探索Al(OH)3水解副产物转化为有价值的材料，以阐明降低氢生成总成本的策略。特别是，我们在这项工作中证明了(i)分层纳米多孔铝的合成是可扩展的，以满足氢经济大规模生产的需要；（ii） Al(OH)3水解副产物可以转化为高表面积的“活性氧化铝”（Al2O3），作为商业上可行的产品。
The sale of value-added byproducts from hydrogen-generating reactions is a strategic approach to lower the costs of hydrogen fuel in order to realize a truly sustainable hydrogen economy. Metal hydrolysis is a chemical process that produces hydrogen together with a metal hydroxide species; however, this reaction is rarely observed without chemical additives or extreme reaction conditions. Previously, we demonstrated that hierarchical nanoporous aluminum can create hydrogen at standard conditions for temperature and pressure via hydrolysis without any additives. The advantage of this method is the co-production of pure aluminum hydroxide (Al(OH)3). Here we explore the transformation of this Al(OH)3hydrolysis byproduct into valuable materials to elucidate strategies in reducing the overall cost of hydrogen generated. In particular, we demonstrate in this work that(i)the synthesis of hierarchical nanoporous aluminum is scalable to meet the needs of large-scale production for a hydrogen economy, and(ii)the Al(OH)3hydrolysis byproduct can be transformed to create high surface-area “activated alumina” (Al2O3) as a commercially viable product.