Enhanced hydrogen desorption from the Co-catalyzed LiBH4-Mg(BH4)2 eutectic composite

被引：34

作者：

Chen, Juner ^{[1
]}

Zhang, Yao ^{[1
]}

Xiong, Zhitao ^{[1
]}

Wu, Guotao ^{[1
]}

Chu, Hailiang ^{[1
]}

He, Teng ^{[1
]}

Chen, Ping ^{[1
]}

机构：

[1] Chinese Acad Sci, Dept Hydrogen Energy & Adv Mat, Dalian Natl Lab Clean Energy, Complex Hydride Mat Res Grp,Dalian Inst Chem Phys, Dalian 116023, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Hydrogen storage; Borohydride; Co; Catalytic dehydrogenation; Eutectic composite; COMPLEX HYDRIDES; METAL BOROHYDRIDES; AMMONIA-BORANE; STORAGE; COBALT; DEHYDROGENATION; DECOMPOSITION; REVERSIBILITY; RELEASE; NI;

D O I：

10.1016/j.ijhydene.2012.06.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Co-based catalyst can significantly improve the dehydrogenation kinetics of the eutectic composite of LiBH4-Mg(BH4)(2) (1/1 M ratio). The onset hydrogen desorption temperature of the composite is at about 155 degrees C, which is ca. 245, 110 or 27 degrees C lower than that of LiBH4, Mg(BH4)(2) or pristine LiBH4-Mg(BH4)(2), respectively. Upon holding the samples at 270 degrees C, the Co catalyzed composite can release hydrogen at a rate 1.6 times faster than that of the pristine one. Electron Paramagnetic Resonance (EPR) characterization evidenced that Co was in a reduced state of Co+ which may serve as the functional species in catalyzing the dehydrogenation of the composite. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：12425 / 12431

页数：7

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