Hydrogen generation from Al‐water reaction catalyzed by Fe/AlOOH composite,Energy Science & Engineering

当前位置： X-MOL 学术 › Energy Sci. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Hydrogen generation from Al‐water reaction catalyzed by Fe/AlOOH composite
Energy Science & Engineering ( IF 3.5 ) Pub Date : 2020-05-07 , DOI: 10.1002/ese3.675
Wei‐Zhuo Gai ₁ , Xianghui Zhang ₁ , Kexi Sun ₁ , Yang Yang ₂ , Zhen‐Yan Deng ₂

Affiliation

Hydrogen generation via Al‐water reaction promoted by special catalysts has great potential, which can provide hydrogen source for portable fuel cells. In this work, we use wet chemical reduction method to prepare a high‐activity Fe/AlOOH composite with better stability and demonstrate its usage as a catalyst for Al‐water reaction. It is found that Fe/AlOOH composite not only significantly promotes the Al‐water reaction but also shortens the induction time. The catalytic activity of Fe/AlOOH directly correlated with its active area, which, in turn, is closely related to the AlOOH:Fe molar ratio. In addition, increasing the weight content of Fe/AlOOH, reaction temperature, and the Al:water ratio improve the hydrogen generation performance of Al‐water reaction. Mechanism analyses show that water dissociation on AlOOH surface and galvanic microinteractions between Fe and Al promotes the hydration of surface passivating oxide film of Al particle, which improves the Al‐water reaction dynamics. The present work provides a new way to produce hydrogen from Al‐water reaction for portable devices.

中文翻译：

Fe / AlOOH复合材料催化铝水反应制氢

特殊催化剂促进的铝水反应制氢潜力巨大，可为便携式燃料电池提供氢源。在这项工作中，我们使用湿化学还原法制备了具有更高稳定性的高活性Fe / AlOOH复合材料，并证明了其作为Al-水反应的催化剂的用途。发现Fe / AlOOH复合物不仅显着促进了Al-水反应，而且缩短了诱导时间。Fe / AlOOH的催化活性与其活性面积直接相关，而活性面积又与AlOOH：Fe摩尔比密切相关。此外，增加Fe / AlOOH的重量含量，反应温度和Al：水的比例可改善Al-水反应的产氢性能。机理分析表明，AlOOH表面的水离解和Fe和Al之间的电微相互作用促进了Al颗粒表面钝化氧化膜的水合作用，从而改善了Al-水的反应动力学。目前的工作提供了一种新的方式，可以通过铝水反应为便携式设备生产氢气。

更新日期：2020-05-07

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11