Author/Authors :
C. Bonatto Minella، نويسنده , , Christian and Lindemann، نويسنده , , Inge and Nolis، نويسنده , , Pau and Kieكling، نويسنده , , Anja and Barَ، نويسنده , , Maria Dolors and Klose، نويسنده , , Markus and Giebeler، نويسنده , , Lars and Rellinghaus، نويسنده , , Bernd and Eckert، نويسنده , , Jürgen and Schultz، نويسنده , , Ludwig and Gutfleisch، نويسنده , , Oliver، نويسنده ,
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).
tudy 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.
Keywords :
complex hydride , 23Na{1H} magic angle spinning-nuclear magnetic resonance , Nanoconfinement , Transmission electron microscopy , Hydrogen storage , 27Al{1H} magic angle spinning-nuclear magnetic resonance
