without changing your settings we'll assume you are happy to receive all RSC cookies.
You can change your cookie settings by navigating to our Privacy and Cookies page and following the instructions. These instructions
are also obtainable from the privacy link at the bottom of any RSC page.
Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, P.R. China
; Fax: +86 22 23503639
; Tel: +86 22 23503639
J. Mater. Chem., 2012,22, 13782-13787
06 Mar 2012,
01 May 2012
First published online
01 May 2012
A TiN catalyst was used to synthesize NaAlH4via the mechanical milling of a NaH–Al mixture under 2 MPa hydrogen pressure. The dehydrogenation thermodynamics and kinetics of the as-synthesized TiN-doped NaAlH4 were systematically investigated. Thermodynamic analyses show that the dehydrogenation rate clearly increases with a corresponding increase of dehydrogenation temperature. The apparent activation energy (Ea) for the first step is estimated to be 45.15 kJ mol−1 by using the Arrhenius equation. The dehydrogenation and hydrogenation behaviors of TiN-doped NaAlH4 are investigated under different hydrogen pressures using high-pressure differential scanning calorimetry (HP-DSC). Interestingly, the onset dehydrogenation temperature of TiN-doped NaAlH4 is lowered to about 100 °C with a peak of 138.05 °C. X-Ray diffraction and XPS results reveal that the TiN nanopowders possess excellent catalytic stability.
Fetching data from CrossRef. This may take some time to load.
Journal of Materials Chemistry
- Information Point
This text is added as a work around for heading error in Accessibility testing