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题名: Alkali Metal Hydride Modification on Hydrazine Borane for Improved Dehydrogenation
作者: Chua, Yong Shen1, 2;  Pei, Qijun3;  Ju, Xiaohua1;  Zhou, Wei2, 4;  Udovic, Terrence J.2;  Wu, Guotao1;  Xiong, Zhitao1;  Chen, Ping1;  Wu, Hui2, 4
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2014-05-29
DOI: 10.1021/jp502144u
卷: 118, 期:21, 页:11244-11251
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: Hydrazidotrihydridoborates of various alkali metals, i.e., NaN2H3BH3 and KN2H3BH3, were synthesized successfully via a liquid approach. The crystal structures of NaN2H3BH3 and KN2H3BH3 were determined, and their dehydrogenation properties were compared with LiN2H3BH3 and N2H4BH3. A clear correlation between sizes of metal cations in hydrazidotrihydridoborates and their corresponding melting and dehydrogenation temperatures was observed. The dehydrogenation temperature was found dependent on the melting temperature. Upon approaching the melting points, alkali metal hydrazidotrihydridoborates dehydrogenate rapidly in the first step, giving rise to the formation of intermediates that possess N2BH2, N2BH, and NBH3 species. Further increasing temperature leads to the release of additional H-2 and the formation of N2BH species. Compared to pristine N2H4BH3, the alkali-metal-substituted hydrazidotrihydridoborates demonstrate significantly improved dehydrogenation behavior with no N2H4 emission and greatly suppressed NH3 release.
关键词[WOS]: HYDROGEN-STORAGE MATERIAL ;  AMMONIA-BORANE ;  AMIDOBORANES ;  LITHIUM
语种: 英语
WOS记录号: WOS:000336771700009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143182
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.NIST, Ctr Neutron Res, Gaithersburg, MD 20898 USA
3.Sichuan Univ, Sch Phys Sci & Technol, Chengdu 610065, Peoples R China
4.Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

Recommended Citation:
Chua, Yong Shen,Pei, Qijun,Ju, Xiaohua,et al. Alkali Metal Hydride Modification on Hydrazine Borane for Improved Dehydrogenation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(21):11244-11251.
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