Improving Hydrogen Sorption Kinetics of the Mg(NH2)(2)-LiH System by the Tuning Particle Size of the Amide

doi:10.1021/jp904346x

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	Improving Hydrogen Sorption Kinetics of the Mg(NH2)(2)-LiH System by the Tuning Particle Size of the Amide
	Xie, Lei 1; Liu, Yang 1; Li, Guanqiao 1; Li, Xingguo 1,2
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2009-08-13
卷号	113 期号:32 页码:14523-14527
ISSN号	1932-7447
DOI	10.1021/jp904346x
英文摘要	Mg(NH2)(2) with three different particle sizes of 100, 500, and 2000 nm are obtained by a series of reactions between Mg, H-2, and NH3. The ammonia desorption temperature decreases with the particle size. In addition, the hydrogen desorption kinetics increases obviously with decreasing the particle size of amide after mixing with LiH. The desorption activation energy of the three mixed samples is 122.2, 134.7, and 182.0 kJ/mol with increasing the particle size. After dehydrogenation, the particle size of the product is similar to that of the amide before dehydrogenation. Due to the larger specific surface area and reduced diffusion distance, the absorption kinetics increases as well with decreasing the particle size. The relationship between particle size and hydrogen sorption kinetics is also discussed.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000268661300070
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/68311]
专题	中国科学院化学研究所
通讯作者	Li, Xingguo
作者单位	1.Peking Univ, BNLMS, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.Peking Univ, Coll Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Xie, Lei,Liu, Yang,Li, Guanqiao,et al. Improving Hydrogen Sorption Kinetics of the Mg(NH2)(2)-LiH System by the Tuning Particle Size of the Amide[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(32):14523-14527.
APA	Xie, Lei,Liu, Yang,Li, Guanqiao,&Li, Xingguo.(2009).Improving Hydrogen Sorption Kinetics of the Mg(NH2)(2)-LiH System by the Tuning Particle Size of the Amide.JOURNAL OF PHYSICAL CHEMISTRY C,113(32),14523-14527.
MLA	Xie, Lei,et al."Improving Hydrogen Sorption Kinetics of the Mg(NH2)(2)-LiH System by the Tuning Particle Size of the Amide".JOURNAL OF PHYSICAL CHEMISTRY C 113.32(2009):14523-14527.