3CaH(2)+4MgB(2) + CaF2 Reactive Hydride Composite as a Potential Hydrogen Storage Material: Hydrogenation and Dehydrogenation Pathway
Author
Summary, in English
A reactive hydride composite (RHC) with initial composition 3CaH(2) + 4MgB(2) + CaF2 was studied by in situ synchrotron radiation powder X-ray diffraction (SR-PXD) and X-ray absorption near edge structure (XANES) at the B K-edge and at the Ca K-edge. The hydrogenation reaction proceeds by an unknown intermediate. No evidence of intermediates was observed during the dehydrogenation reaction. B and Ca K-edge XANES results hint to a closed interaction of CaF2 and Ca(BH4)(2). The main function of CaF2 in the 3CaH(2) + 4MgB(2) + CaF2 RHC is as a dopant for the hydrogenation and dehydrogenation reactions.
Department/s
Publishing year
2012
Language
English
Pages
7207-7212
Publication/Series
Journal of Physical Chemistry C
Volume
116
Issue
12
Document type
Journal article
Publisher
The American Chemical Society (ACS)
Topic
- Physical Sciences
- Natural Sciences
Status
Published
ISBN/ISSN/Other
- ISSN: 1932-7447