Title: Lightweight hydrogen-storage material Mg0.65Sc0.35D2 studied with H-2 and H-2-{Sc-45} MAS NMR exchange spectroscopy
Authors: Srinivasan, S
Magusin, Pieter # ×
Issue Date: 2011
Publisher: Academic Press
Series Title: Solid State Nuclear Magnetic Resonance vol:39 issue:3-4 pages:88-98
Abstract: Using double-quantum 2H MAS NMR with 45Sc recoupling and Bloch–Siegert compensated 2H–{45Sc} TRAPDOR we have identified the overlapping NMR signals of deuterium with and without scandium neighbors in Mg0.65Sc0.35D2, a candidate lightweight material for hydrogen storage. At room temperature we also observe a third type of mobile deuterium. Deuterium mobility among the three NMR-distinct sites has been investigated by means of one-and two-dimensional exchange spectroscopy (Exsy). Complete deuterium exchange within 0.1 s is observed, which indicates that the three NMR-distinct sites are close together in the crystal lattice. The weak temperature- and MAS-rate dependences observed in Exsy are indicative for a combination of chemical exchange and spin diffusion.
ISSN: 0926-2040
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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