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学科主题: 物理化学
题名: NH3 Mediated or Ion Migration Reaction: The Case Study on Halide-Amide System
作者: Cao, Hujun1, 2, 3;  Wang, Jianhui1;  Chua, Yongshen1;  Wang, Han1, 3;  Wu, Guotao1;  Xiong, Zhitao1;  Qiu, Jieshan2;  Chen, Ping1
通讯作者: 陈萍
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2014-02-06
DOI: 10.1021/jp411551v
卷: 118, 期:5, 页:2344-2349
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Lively debates on hydrogen desorption from the amide-hydride system via either ion migration or NH3 mediated mechanisms have been ongoing since the discovery of the amide-hydride system for hydrogen storage. In this work, we employed kinetic analyses to demonstrate that the mechanism of hydrogen desorption depends on the sample morphology and desorption conditions. Upon the formation of Li amide bromide (Li2NH2Br), the LiNH2 unit is confined in the cage of Br, resulting in less mobility of ion. Hydrogen desorption from the Li2NH2Br-2LiH system appears to follow the NH3 mediated mechanism even if the two starting chemicals have been intensively ball milled. On the other hand, the migrations of Li+ and H+ play important roles leading to H-2 formation from the direct combination of H+ (from -NH2) and H- (from LiH) when LiNH2 and LiH are intimately in contact.
关键词[WOS]: HYDROGEN STORAGE-SYSTEM ;  N-H SYSTEM ;  LITHIUM AMIDE ;  MECHANISM ;  HYDRIDES ;  IMIDES ;  LIH ;  DEHYDROGENATION ;  DECOMPOSITION ;  DIFFUSION
语种: 英语
WOS记录号: WOS:000331153700014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144448
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Fine Chem, Liaoning Key Lab Energy Mat & Chem Engn, Carbon Res Lab, Dalian 116024, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Cao, Hujun,Wang, Jianhui,Chua, Yongshen,et al. NH3 Mediated or Ion Migration Reaction: The Case Study on Halide-Amide System[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(5):2344-2349.
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