Title: Hydrogen sites and dynamics in light-weight hydrogen-storage material magnesium-scandium hydride investigated with H-1 and H-2 NMR
Authors: Magusin, Pieter C. M. M. ×
Kalisvaart, W. Peter
Notten, Peter H. L
van Santen, Rutger A #
Issue Date: 2008
Publisher: Elsevier
Series Title: Chemical Physics Letters vol:456 issue:1-3 pages:55-58
Abstract: Magnesium transition-metal alloys are a novel class of light-weight hydrogen-storage materials. We have studied magnesium–scandium hydride with magic-angle-spinning 1H and 2H NMR. A new double-quantum NMR method with 45Sc recoupling reveals two types of deuterium with and without scandium neighbors. Their relative occurrence quantified with 2H–{45Sc} TRAPDOR NMR reflects a non-statistical Mg and Sc distribution over the crystal lattice. The deuteron exchange observed with two-dimensional NMR is consistent with Mg and Sc-rich sub-nanometer clusters. Deuterium motion is governed by a broad range of energy barriers without clear correlation to the underlying chemical heterogeneity.
ISSN: 0009-2614
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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