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题名: Synthesis, structures and dehydrogenation of magnesium borohydride-ethylenediamine composites
作者: Chen, Juner1, 2;  Chua, Yong Shen1;  Wu, Hui3, 4;  Xiong, Zhitao1;  He, Teng1;  Zhou, Wei4;  Ju, Xiaohua1;  Yang, Minghui1;  Wu, Guotao1;  Chen, Ping1, 5
关键词: Dehydrogenation ;  Magnesium borohydride ;  Ethylenediamine ;  Hydrogen storage ;  Mechanism ;  Isotopic labelling
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2015-01-05
DOI: 10.1016/j.ijhydene.2014.11.020
卷: 40, 期:1, 页:412-419
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: Magnesium borohydride-ethylenediamine composites (Mg(BH4)(2)-nEDA, n = 2, 3, 4), a new type of hydrogen storage material, were synthesized by ball milling magnesium borohydride and ethylenediamine (EDA). In particular, Mg(BH4)(2).3EDA and Mg(BH4)(2).4EDA can be well defined by a orthorhombic Pbca cell and a triclinic P1 cell, respectively. Hydrogen releasing from the Mg(BH4)(2)-nEDA composites was observed at elevated temperatures. Detailed dehydrogenation properties and mechanism of Mg(BH4)(2)-2EDA composite in which there are equivalent H delta+(N) and H delta-(B) were systematically investigated. Ca. 8 wt% hydrogen can be evolved from Mg(BH4)(2)-2EDA in one step upon holding it at 260 degrees C for 12 h. Mechanistic studies using phased dehydrogenation and isotopic labelling experiments show that hydrogen was released via the establishment of -N=B=N- bond as well as the combination of H delta+ (N) and H delta- (B). Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: HYDROGEN-STORAGE ;  MG(BH4)(2) ;  RELEASE ;  SYSTEM ;  BORANE
语种: 英语
WOS记录号: WOS:000348687300042
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145950
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
4.Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
5.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Chen, Juner,Chua, Yong Shen,Wu, Hui,et al. Synthesis, structures and dehydrogenation of magnesium borohydride-ethylenediamine composites[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2015,40(1):412-419.
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