Abstract
In this paper we performed a comprehensive investigation of the structural and sorption properties of a 40 wt. % NaAlH4 confined in a ordered mesoporous carbon (OMC, i.e. CMK-3) by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), 23Na{1H} and 27Al{1H} solid-state magic angle spinning-nuclear magnetic resonance (MAS-NMR). This study evidences a remarkable improvement of the sorption kinetics of NaAlH4 due to its existence in nanometer size within the OMC. The pressure composition isotherm (PCI) analysis (for the re-absorption step) of the nanoconfined NaAlH4 would suggest an alteration of its equilibrium thermodynamic properties. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Original language | English |
---|---|
Pages (from-to) | 8829-8837 |
Journal | International Journal of Hydrogen Energy |
Volume | 38 |
DOIs | |
Publication status | Published - 17 Jul 2013 |
Keywords
- 23 1 Na{ H} magic angle spinning-nuclear magnetic resonance
- 27 1 Al{ H} magic angle spinning-nuclear magnetic resonance
- Complex hydride
- Hydrogen storage
- Nanoconfinement
- Transmission electron microscopy