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学科主题: 物理化学
题名: Improved reversible hydrogen storage of LiAlH4 by nano-sized TiH2
作者: Liu, Shu-Sheng1, 2;  Li, Zhi-Bao2;  Jiao, Cheng-Li2;  Si, Xiao-Liang1;  Yang, Li-Ni4;  Zhang, Jian2;  Zhou, Huai-Ying1;  Huang, Feng-Lei5;  Gabelica, Zelimir6;  Schick, Christoph7;  Sun, Li-Xian1, 2;  Xu, Fen1, 3
通讯作者: 孙立贤
关键词: Titanium hydride ;  Alanate ;  Catalyst ;  Dehydrogenation ;  Regeneration
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2013-02-27
DOI: 10.1016/j.ijhydene.2012.11.042
卷: 38, 期:6, 页:2770-2777
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL19
项目归属: DNL1903
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
资助者: 2,1
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: Transition metal halides are mostly used as dopants to improve the hydrogen storage properties of LiAlH4, but they will cause hydrogen capacity loss because of their relatively high molecular weights and reactions with LiAlH4. To overcome these drawbacks, active nano-sized TiH2 (TiH2nano) prepared by reactive ball milling is used to dope LiAlH4. It shows superior catalytic effect on the dehydrogenation of LiAlH4 compared to commercial TiH2. TiH2nano-doped LiAlH4 starts to release hydrogen at 75 degrees C, which is 80 degrees C lower than the onset dehydrogenation temperature of commercial LiAlH4. About 6.3 wt.% H-2 can be released isothermally at 100 degrees C (800 min) or at 120 degrees C (150 min). The apparent activation energies of the first two dehydrogenation reactions of LiAlH4 are reduced by about 20 and 24 kJ mol(-1), respectively. Meanwhile, the regeneration of LiAlH4 is realized through extracting the solvent from LiAlH4 center dot 4THF, which is obtained by ball milling the dehydrogenated products of TiH2nano-doped LiAlH4 in the presence of THF and 5 MPa H-2. This suggests that TiH2 is also an effective catalyst for the formation of LiAlH4 center dot 4THF. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: LITHIUM ALANATE LIALH4 ;  THERMAL-DECOMPOSITION ;  ALUMINUM-HYDRIDE ;  COMPLEX HYDRIDES ;  METAL-HYDRIDES ;  DEHYDROGENATION ;  NAALH4 ;  LI3ALH6 ;  REHYDROGENATION ;  PERFORMANCE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000315616400019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119430
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.Guilin Univ Elect Technol, Dept Mat Sci & Engn, Guilin 541004, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Liaoning Normal Univ, Fac Chem & Chem Engn, Dalian 116029, Peoples R China
4.Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China
5.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
6.Univ Haute Alsace, ENSCMu, Lab LPI GSEC, F-68094 Mulhouse, France
7.Univ Rostock, Inst Phys, D-18051 Rostock, Germany

Recommended Citation:
Liu, Shu-Sheng,Li, Zhi-Bao,Jiao, Cheng-Li,et al. Improved reversible hydrogen storage of LiAlH4 by nano-sized TiH2[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2013,38(6):2770-2777.
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