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NaAlH4 confined in ordered mesoporous carbon

Bonatto Minella, Christian and Lindemann, Inge and Nolis, Pau and Kießling, Anja and Baró, Maria Dolors and Klose, Markus and Giebeler, Lars and Rellinghaus, Bernd and Eckert, Jürgen and Schultz, Ludwig and Gutfleisch, Oliver (2013):
NaAlH4 confined in ordered mesoporous carbon.
In: International Journal of Hydrogen Energy, Elsevier Science Publishing, pp. 8829-8837, 38, (21), ISSN 03603199, [Online-Edition: http://dx.doi.org/10.1016/j.ijhydene.2013.04.103],
[Article]

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.

Item Type: Article
Erschienen: 2013
Creators: Bonatto Minella, Christian and Lindemann, Inge and Nolis, Pau and Kießling, Anja and Baró, Maria Dolors and Klose, Markus and Giebeler, Lars and Rellinghaus, Bernd and Eckert, Jürgen and Schultz, Ludwig and Gutfleisch, Oliver
Title: NaAlH4 confined in ordered mesoporous carbon
Language: English
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.

Journal or Publication Title: International Journal of Hydrogen Energy
Volume: 38
Number: 21
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Hydrogen storage, Nanoconfinement, Complex hydride, 27Al{1H} magic angle spinning-nuclear magnetic resonance, 23Na{1H} magic angle spinning-nuclear magnetic resonance, Transmission electron microscopy
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 10 Mar 2014 09:31
Official URL: http://dx.doi.org/10.1016/j.ijhydene.2013.04.103
Identification Number: doi:10.1016/j.ijhydene.2013.04.103
Funders: This project is funded by the European Union (ERDF) and the Free State of Saxony (SAB Grant-Nr. 100112628). , M. K. acknowledges financial support by the Ministry of Science and Art of Saxony within the Cluster of Excellence "Structure Design of Novel High-Performance Materials via Atomic Design and Defect Engineering (ADDE)., M.D.B. acknowledges the partial financial support from the 2009-SGR-1292 project and from an ICREA-Academia award.
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