期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 37, 期 17, 页码 12425-12431出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.06.057
关键词
Hydrogen storage; Borohydride; Co; Catalytic dehydrogenation; Eutectic composite
资金
- National Natural Science foundation of China [50901070, 20971120]
- National Basic Research Program of China [2010CB631304]
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.
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