The reactions in LiBH4-NaNH2 hydrogen storage system
文献类型：期刊论文
| 作者 | Zhang, Yao1; Tian, Qifeng2,3 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 36期号:16页码:9733-9742 |
| 关键词 | Hydrogen storage Stepwise reactions LiBH4-NaNH2 system |
| 英文摘要 | stepwise reactions were observed in the ball milling and heating process of the libh4-nanh2 system by means of x-ray diffraction (xrd) and fourier transform infrared spectrometry (ft-ir). during the ball milling process, two concurrent reactions take place in the mixture: 3libh(4) + 4nanh(2) -> li3na(nh2)(4) + 3nabh(4) and libh4 + nanh2 -> linh2 + nabh4. the heating process from 50 degrees c to 400 degrees c is mainly the concurrent reactions of li3na(nh2)(4) + 3libn(4) -> 2li(3)bn(2) + nabh4 + 8h(2) and 2linh(2) + libh4 -> li3bn2h8 -> li3bn2 + 4h(2), where the intermediate phases li3na(nh2)(4) and linh2 serve as the reagents to decompose libh4. the merged equations for the mechanochemical and the heating reactions below 400 degrees c can be denoted as 3libh(4) + 2nanh(2) -> li3bn2 + 2nabh(4) + 4h(2). the maximum dehydrogenation capacity in closed system below 400 degrees c is 5.1 wt.% h-2, which agrees well with the theoretical capacity (5.5 wt.% h-2) of the merged equation and thus demonstrates the suggested pathway. the subsequent step consists of the decompositions of nabh4 and li3na(nh2)(4) within the temperature range of 400 degrees c-600 degrees c. the apparent activation energies of the two steps are 114.8 and 123.5 kj/mol, respectively. they are all lower than that of our previously obtained bulk libh4. copyright (c) 2011, hydrogen energy publications, llc. published by elsevier ltd. all rights reserved. |
| 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 |
| 关键词[WOS] | n-h system ; lithium borohydride ; libh4 ; hydride ; desorption ; transition ; mixtures ; release ; imides ; amide |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000294374800038 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142295]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Complex Hydride Mat Res Grp, Dalian 116023, Peoples R China 2.Wuhan Inst Technol, Minist Educ, Key Lab Green Chem Proc, Wuhan 430073, Peoples R China 3.Wuhan Inst Technol, Hubei Key Lab Novel Reactor & Green Chem Technol, Wuhan 430073, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yao,Tian, Qifeng. The reactions in LiBH4-NaNH2 hydrogen storage system[J]. international journal of hydrogen energy,2011,36(16):9733-9742. |
| APA | Zhang, Yao,&Tian, Qifeng.(2011).The reactions in LiBH4-NaNH2 hydrogen storage system.international journal of hydrogen energy,36(16),9733-9742. |
| MLA | Zhang, Yao,et al."The reactions in LiBH4-NaNH2 hydrogen storage system".international journal of hydrogen energy 36.16(2011):9733-9742. |
入库方式： OAI收割
来源：大连化学物理研究所
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