3CaH2 + 4MgB2 + CaF2 Reactive Hydride Composite as a Potential Hydrogen Storage Material: Hydrogenation and Dehydrogenation Pathway

Suarez Alcantara, K.; Ramallo Lopez, J.M.; Boesenberg, U.; Saldan, I.; Pistidda, C.; Requejo, F.G.; Jensen, T.; Cerenius, Y.; Soerby, M.; Avila, J.; Bellosta von Colbe, J.; Taube, K.; Klassen, T.; Dornheim, M.

Journalpaper

3CaH2 + 4MgB2 + CaF2 Reactive Hydride Composite as a Potential Hydrogen Storage Material: Hydrogenation and Dehydrogenation Pathway

Abstract

A reactive hydride composite (RHC) with initial composition 3CaH2 + 4MgB2 + 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 3CaH2 + 4MgB2 + CaF2 RHC is as a dopant for the hydrogenation and dehydrogenation reactions.

DOI Link to Publication

URL: https://publications.hereon.de/id/30089/
Authors:Suarez Alcantara, K., Ramallo Lopez, J.M., Boesenberg, U., Saldan, I., Pistidda, C., Requejo, F.G., Jensen, T., Cerenius, Y., Soerby, M., Avila, J., Bellosta von Colbe, J., Taube, K., Klassen, T., Dornheim, M.
Year:2012
In: The Journal of Physical Chemistry C
Volume:116
Issue:12
Pages:7207 - 7212
Publisher:ACS, Washington
Type:Journalpaper
ISSN: 1932-7447
Cite as: Suarez Alcantara, K.; Ramallo Lopez, J.M.; Boesenberg, U.; Saldan, I.; Pistidda, C.; Requejo, F.G.; Jensen, T.; Cerenius, Y.; Soerby, M.; Avila, J.; Bellosta von Colbe, J.; Taube, K.; Klassen, T.; Dornheim, M.: 3CaH2 + 4MgB2 + CaF2 Reactive Hydride Composite as a Potential Hydrogen Storage Material: Hydrogenation and Dehydrogenation Pathway. In: The Journal of Physical Chemistry C. Vol. 116 (2012) 12, 7207 - 7212. (DOI: 10.1021/jp211620h)