期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 1, 页码 967-973出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.09.251
关键词
Mechanical activation; Hydrogen absorption; Hydride formation; Kinetic modeling; Reaction mechanism
资金
- MIUR [2017B7MMJ5_001]
The study demonstrates that the absorption of hydrogen by metals is influenced by both statistical and chemical contributions, determining the shape of the absorption curve. Chemical information can only be obtained by disentangling these two contributions.
Hydrogen (H-2) absorption by metals, metal alloys, and more complex solids is a crucial issue on the road to the efficient H-2 storage required by the hydrogen economy. The present study examines the reaction between Mg powder and gaseous H-2 under ball milling conditions as a specific casestudy. Based on accurate kineticevidence, we show that H-2 absorptionis governed bya combinationof statistical and chemical contributions related, respectively, to the inherent nature of ball milling and the chemistry of the MgeH(2) system. The combination of the two factors determines the shape of the H-2 absorption curve. Therefore, chemical information can be only obtained by disentangling the two contributions. To this aim, we propose a general method that can be extended to other chemical transformations activated by ball milling. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据