Abstract / Description of output
Methylamine borane and dimethylamine borane have been studied under compression to 3 GPa using Raman spectroscopy and synchrotron powder X-ray diffraction. Both undergo reversible pressure-induced structural changes in this pressure range. The structural changes in the case of methylamine borane may be indicative of a second-order phase transition, taking place between ca. 0.8-1.2 GPa, which does not result in a change of space-group symmetry. In the case of dimethylamine borane, however, a reversible, reconstructive phase transition (monoclinic -> orthorhombic) occurs below 0.7 GPa. This new high-pressure phase was successfully indexed, with a possible space group assignment of Pccn or Pbcn. (C) 2017 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 953-961 |
Number of pages | 9 |
Journal | Journal of alloys and compounds |
Volume | 722 |
Early online date | 17 Jun 2017 |
DOIs | |
Publication status | Published - 25 Oct 2017 |
Keywords / Materials (for Non-textual outputs)
- Hydrogen storage
- Phase transition
- High pressure
- Synchrotron X-ray powder diffraction
- HYDROGEN-STORAGE MATERIALS
- X-RAY-DIFFRACTION
- MAGNESIUM BOROHYDRIDE MG(BH4)(2)
- AMMONIA-BORANE
- CRYSTAL-STRUCTURE
- CATALYTIC DEHYDROCOUPLING/DEHYDROGENATION
- THERMAL-DECOMPOSITION
- DIHYDROGEN BOND
- AMINE-BORANES
- DEHYDROGENATION