Efficient and highly rapid hydrogen release from ball-milled 3NH(3)BH(3)/MMgH3 (M = Na, K, Rb) mixtures at low temperatures

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	Efficient and highly rapid hydrogen release from ball-milled 3NH(3)BH(3)/MMgH3 (M = Na, K, Rb) mixtures at low temperatures
	X. D. Kang; J. H. Luo; P. Wang
	2012
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	37 期号:5 页码:4259-4266
摘要	The stoichiometric reactions of ammonia borane (NH3BH3, AB) and selected alkali or alkaline-earth metal hydrides produce metal amidoboranes, which possess dehydrogenation property advantages over their parent AB. However, the losses of hydrogen capacity and chemical energy in the preparation process make metal amidoboranes less energy-effective for hydrogen storage application. In the present study, by combining the M+-Mg2+ double cations remarkably lowers the reactivity of the alkali metal hydrides toward AB. As a result, the starting Mg-based ternary hydrides MMgH3 (M = Na, K, Rb) and AB phases are largely stable in the mechanical milling process, but transform to the corresponding mixed-cation amidoboranes in the subsequent heating process. Importantly, when the post-milled 3AB/MMgH3 mixtures are isothermally heated at above 60 degrees C using water bath, the formation and decomposition processes of the mixed-cation amidoboranes can be favorably combined, giving rise to rapid and efficient dehydrogenation performances at the mild temperatures (60-80 degrees C). The results acquired may provide a generalized reactions coupling strategy for designing and synthesis other potentially efficient hydrogen storage system. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
部门归属	[kang, xiang-dong; luo, jun-hong; wang, ping] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;wang, p (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china.;pingwang@imr.ac.cn
关键词	Hydrogen Storage Ammonia Borane Metal Amidoborane Hydride Reactivity Ammonia Borane Dehydrogenation Thermal-decomposition Storage Material Catalyzed Dehydrogenation Crystal-structure Boron-nitride Amidoborane Lithium Amidotrihydroborate Hydrides
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60030
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. D. Kang,J. H. Luo,P. Wang. Efficient and highly rapid hydrogen release from ball-milled 3NH(3)BH(3)/MMgH3 (M = Na, K, Rb) mixtures at low temperatures[J]. International Journal of Hydrogen Energy,2012,37(5):4259-4266.
APA	X. D. Kang,J. H. Luo,&P. Wang.(2012).Efficient and highly rapid hydrogen release from ball-milled 3NH(3)BH(3)/MMgH3 (M = Na, K, Rb) mixtures at low temperatures.International Journal of Hydrogen Energy,37(5),4259-4266.
MLA	X. D. Kang,et al."Efficient and highly rapid hydrogen release from ball-milled 3NH(3)BH(3)/MMgH3 (M = Na, K, Rb) mixtures at low temperatures".International Journal of Hydrogen Energy 37.5(2012):4259-4266.