Promoted hydrogen release from ammonia borane by mechanically milling with magnesium hydride: a new destabilizing approach
文献类型：期刊论文
| 作者 | X. D. Kang ; L. P. Ma ; Z. Z. Fang ; L. L. Gao ; J. H. Luo ; S. C. Wang ; P. Wang |
| 刊名 | Physical Chemistry Chemical Physics
 |
| 出版日期 | 2009 |
| 卷号 | 11期号:14页码:2507-2513 |
| 关键词 | n-h compounds thermal-decomposition catalyzed dehydrogenation storage material room-temperature lithium hydride generation mgh2 dissociation aminoborane |
| ISSN号 | 1463-9076 |
| 中文摘要 | Ammonia borane (NH(3)BH(3), AB) is an intriguing molecular crystal with an extremely high hydrogen capacity and moderate thermal stability. In the present study, we show a simple but effective approach for destabilizing AB for promoted hydrogen release at moderate temperatures. It is found that mechanically milling with magnesium hydride (MgH(2)) can dramatically improve the dehydrogenation properties of AB, on both the kinetic and thermochemical aspects. For the mechanically milled AB/0.5MgH(2) material, over 8 wt% hydrogen can be released from AB within 4 h at around 100 degrees C without undesired volatile by-products. Moreover, the dehydrogenation reaction of the AB/0.5MgH(2) sample becomes significantly less exothermic than that of neat AB. In situ X-ray diffraction results demonstrate that the MgH(2) additive well maintains its phase stability during the ball-milling and the subsequent heating processes. Meanwhile, Raman spectroscopy and in situ (11)B NMR studies show that the MgH(2) additive exerts considerable influence on the chemical bonding state and decomposition process/products of AB. Combined phase/structure analyses results suggest that MgH(2) exerts effect via developing solid phase interaction with AB. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32002]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. D. Kang,L. P. Ma,Z. Z. Fang,et al. Promoted hydrogen release from ammonia borane by mechanically milling with magnesium hydride: a new destabilizing approach[J]. Physical Chemistry Chemical Physics,2009,11(14):2507-2513. |
| APA | X. D. Kang.,L. P. Ma.,Z. Z. Fang.,L. L. Gao.,J. H. Luo.,...&P. Wang.(2009).Promoted hydrogen release from ammonia borane by mechanically milling with magnesium hydride: a new destabilizing approach.Physical Chemistry Chemical Physics,11(14),2507-2513. |
| MLA | X. D. Kang,et al."Promoted hydrogen release from ammonia borane by mechanically milling with magnesium hydride: a new destabilizing approach".Physical Chemistry Chemical Physics 11.14(2009):2507-2513. |
入库方式： OAI收割
来源：金属研究所
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