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3CaH(2)+4MgB(2) + CaF2 Reactive Hydride Composite as a Potential Hydrogen Storage Material: Hydrogenation and Dehydrogenation Pathway

Författare:
  • K. Suarez Alcantara
  • J. M. Ramallo-Lopez
  • U. Boesenberg
  • I. Saldan
  • C. Pistidda
  • F. G. Requejo
  • T. Jensen
  • Yngve Cerenius
  • M. Sorby
  • J. Avila
  • J. Bellosta von Colbe
  • K. Taube
  • Thomas Klassen
  • M. Dornheim
Publiceringsår: 2012
Språk: Engelska
Sidor: 7207-7212
Publikation/Tidskrift/Serie: Journal of Physical Chemistry C
Volym: 116
Nummer: 12
Dokumenttyp: Artikel
Förlag: American Chemical Society

Sammanfattning

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.

Disputation

Nyckelord

  • Chemistry

Övriga

Published
Yes
  • ISSN: 1932-7447

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