Alkali and alkaline-earth metal borohydride hydrazinates: synthesis, structures and dehydrogenation

	Alkali and alkaline-earth metal borohydride hydrazinates: synthesis, structures and dehydrogenation
	He, Teng 1; Wu, Hui 2,3; Chen, Juner 1; Zhou, Wei 2,3; Wu, Guotao 1; Xiong, Zhitao 1; Zhang, Tao 1; Chen, Ping 1
刊名	physical chemistry chemical physics
	2013
卷号	15 期号:25 页码:10487-10493
通讯作者	陈萍
产权排序	待补充
合作状况	英
英文摘要	four new borohydride hydrazinates, including nabh4 center dot nh2nh2, libh4 center dot 1/2nh(2)nh(2), libh4 center dot 1/3nh(2)nh(2) and mg(bh4)(2)center dot 3nh(2)nh(2), were synthesized. nabh4 center dot nh2nh2 and mg(bh4)(2)center dot 3nh(2)nh(2) possess monoclinic and trigonal structures, respectively, while libh4 center dot 1/2nh(2)nh(2) and libh4 center dot 1/3nh(2)nh(2) exhibit orthorhombic and monoclinic structures. the effects of composition on the dehydrogenation of hydrazinates were investigated. it is demonstrated that cations with high pauling electronegativity hold hydrazine strongly in the vicinity of borohydride and result in direct dehydrogenation at elevated temperatures. specifically, mg(bh4)(2) hydrazinates can directly generate hydrogen upon heating it under a flow of ar; on the other hand, the li and na counterparts lost part or all of the hydrazine components under the same condition. in addition, reducing nh2nh2 content in the complexes leads to improved dehydrogenation properties. mechanistic investigation of mg(bh4)(2) hydrazinates using isotopic labelling indicates that hydrogen desorption is via homogeneous dissociation of n-n bond of nh2nh2 followed by the establishment of b-n bond and combination of h-delta+ (n) and h delta- (b).
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical ; physics, atomic, molecular & chemical
研究领域[WOS]	chemistry ; physics
关键词[WOS]	chemical hydrogen storage ; high-extent dehydrogenation ; magnesium borohydride ; lithium borohydride ; crystal-structure ; room-temperature ; complex hydrides ; decomposition ; libh4 ; amidoboranes
收录类别	SCI
资助信息	1，1
原文出处	10493
语种	英语
WOS记录号	WOS:000319943200053
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119094]
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, Dalian, Peoples R China 2.NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA 3.Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
推荐引用方式 GB/T 7714	He, Teng,Wu, Hui,Chen, Juner,et al. Alkali and alkaline-earth metal borohydride hydrazinates: synthesis, structures and dehydrogenation[J]. physical chemistry chemical physics,2013,15(25):10487-10493.
APA	He, Teng.,Wu, Hui.,Chen, Juner.,Zhou, Wei.,Wu, Guotao.,...&Chen, Ping.(2013).Alkali and alkaline-earth metal borohydride hydrazinates: synthesis, structures and dehydrogenation.physical chemistry chemical physics,15(25),10487-10493.
MLA	He, Teng,et al."Alkali and alkaline-earth metal borohydride hydrazinates: synthesis, structures and dehydrogenation".physical chemistry chemical physics 15.25(2013):10487-10493.