Thermal decomposition behavior of calcium borohydride Ca(BH4)(2)

Authors
Kim, Jae-HunJin, Seon-AhShim, Jae-HyeokCho, Young Whan
Issue Date
2008-08-11
Publisher
ELSEVIER SCIENCE SA
Citation
JOURNAL OF ALLOYS AND COMPOUNDS, v.461, no.1-2, pp.L20 - L22
Abstract
The thermal decomposition behavior of adduct-free Ca(BH4)(2), prepared by heating Ca(BH4)(2)center dot 2THF powder under vacuum, was investigated by X-ray diffraction and thermal analyses. It has been found that Ca(BH4)(2) undergoes a polymorphic transformation at 440 K and eventually decomposes in two steps between 620 and 770 K. CaH2 and an unknown intermediate compound form after the first step, but CaH2 is the only crystalline phase observed after the second step with a total weight loss of about 9.0 wt.%. (c) 2007 Elsevier B.V. All rights reserved.
Keywords
HYDROGEN-STORAGE; LIBH4; HYDRIDE; HYDROGEN-STORAGE; LIBH4; HYDRIDE; hydrogen storage materials; phase transitions; thermochemistry; X-ray diffraction; thermal analysis
ISSN
0925-8388
URI
https://pubs.kist.re.kr/handle/201004/133235
DOI
10.1016/j.jallcom.2007.07.097
Appears in Collections:
KIST Article > 2008
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