A simple and efficient approach to synthesize amidoborane ammoniates: case study for Mg(NH2BH3)(2)(NH3)(3) with unusual coordination structure
文献类型：期刊论文
| 作者 | X. D. Kang ; H. Wu ; J. H. Luo ; W. Zhou ; P. Wang |
| 刊名 | Journal of Materials Chemistry
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:26页码:13174-13179 |
| 关键词 | hydrogen storage properties thermal-decomposition crystal-structure borane release dehydrogenation lithium hydride |
| ISSN号 | 0959-9428 |
| 中文摘要 | Metal amidoborane ammoniates are a new type of promising hydrogen storage material consisting of metal cation, [NH2BH3](-) anionic unit and NH3 ligand. Herein, we report a new reactive ball milling approach for preparation of magnesium amidoborane ammoniate, Mg(NH2BH3)(2)(NH3)(3). Our study found that mechanically milling the NH3BH3-MgH2 mixture in a 2 : 1 molar ratio under NH3 atmosphere can readily produce Mg(NH2BH3)(2)(NH3)(3). Its crystal structure was successfully determined by a combination of X-ray diffraction (XRD) analysis and first-principles calculations. This compound possesses a novel ordered structure with alternating layers of Mg(NH3)(6)(2+) hexamminemagnesium cations and Mg(NH2BH3)(4)(2-) complex anions, in which Mg2+ exhibits both VI and IV coordinations. Property measurements found that Mg(NH2BH3)(2)(NH3)(3) can release 7 equivalents (10.6 wt%) of H-2 upon heating to 300 degrees C in a closed system. A combination of XRD, Fourier transformation infrared spectroscopy (FTIR), and solid-state B-11 MAS NMR techniques has been employed to characterize Mg(NH2BH3)(2)(NH3)(3) and its dehydrogenation product. A series of control experiments have also been conducted to gain insight into the formation mechanism of Mg(NH2BH3)(2)(NH3)(3). |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60031]  |
| 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,H. Wu,J. H. Luo,et al. A simple and efficient approach to synthesize amidoborane ammoniates: case study for Mg(NH2BH3)(2)(NH3)(3) with unusual coordination structure[J]. Journal of Materials Chemistry,2012,22(26):13174-13179. |
| APA | X. D. Kang,H. Wu,J. H. Luo,W. Zhou,&P. Wang.(2012).A simple and efficient approach to synthesize amidoborane ammoniates: case study for Mg(NH2BH3)(2)(NH3)(3) with unusual coordination structure.Journal of Materials Chemistry,22(26),13174-13179. |
| MLA | X. D. Kang,et al."A simple and efficient approach to synthesize amidoborane ammoniates: case study for Mg(NH2BH3)(2)(NH3)(3) with unusual coordination structure".Journal of Materials Chemistry 22.26(2012):13174-13179. |
入库方式： OAI收割
来源：金属研究所
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