Catalytically Enhanced Hydrogen Storage Properties of Mg(NH2)(2)+2LiH Material by Graphite-Supported Ru Nanoparticles

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	Catalytically Enhanced Hydrogen Storage Properties of Mg(NH2)(2)+2LiH Material by Graphite-Supported Ru Nanoparticles
	L. P. Ma; H. B. Dai; Y. Liang; X. D. Kang; Z. Z. Fang; P. J. Wang; P. Wang; H. M. Cheng
	2008
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	112 期号:46 页码:18280-18285
摘要	Identification of effective catalyst has been a subject of great interest and challenge in developing metal-N-H systems as potential hydrogen storage media. Motivated by the mechanistic understanding of the essential amide/imide conversion, we experimentally examined the possibility of N-H bond activation by using metal catalyst. We prepared the graphite-supported Ru nanoparticles (Ru/C catalyst) and evaluated their effect on the hydrogen storage properties of Mg(NH2)(2) + 2LiH material. Our studies show that the Ru/C catalyst is catalytically active toward both dehydrogenation and rehydrogenation reactions of Mg(NH2)(2) + 2LiH. Moreover, the catalytically enhanced hydrogen sorption kinetics persists well over 10 de/rehydrogenation cycles. Careful examination of the isothermal dehydrogenation behaviors suggests that the enhanced dehydrogenation kinetics may result from the Ru-catalyzed interface reaction between amide and imide solid phases. This is consistent with the Fourier transform infrared results, which show clearly the promoting effect of Ru catalyst on the N-H bond reconstruction. Finally, the catalytic mechanism of Ru catalyst on the reversible dehydrogenation reactions of Mg(NH2)(2) + 2LiH material is discussed.
部门归属	[ma, lai-peng; dai, hong-bin; liang, yan; kang, xiang-dong; fang, zhan-zhao; wang, pei-jun; wang, pei-jun; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wang, pj (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;pingwang@imr.ac.cn
关键词	N-h System Self-assembled Monolayers Complex Hydrides Ammonia Decomposition Surfaces Ru(001) Carbon Linh2 Nh3
URL	查看原文
WOS记录号	WOS:000260923900080
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33018
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. P. Ma,H. B. Dai,Y. Liang,et al. Catalytically Enhanced Hydrogen Storage Properties of Mg(NH2)(2)+2LiH Material by Graphite-Supported Ru Nanoparticles[J]. Journal of Physical Chemistry C,2008,112(46):18280-18285.
APA	L. P. Ma.,H. B. Dai.,Y. Liang.,X. D. Kang.,Z. Z. Fang.,...&H. M. Cheng.(2008).Catalytically Enhanced Hydrogen Storage Properties of Mg(NH2)(2)+2LiH Material by Graphite-Supported Ru Nanoparticles.Journal of Physical Chemistry C,112(46),18280-18285.
MLA	L. P. Ma,et al."Catalytically Enhanced Hydrogen Storage Properties of Mg(NH2)(2)+2LiH Material by Graphite-Supported Ru Nanoparticles".Journal of Physical Chemistry C 112.46(2008):18280-18285.