Comparative study on the dehydrogenation properties of TiCl4-doped LiAlH4 using different doping techniques
| Autor: | Marcus Tegel, Thomas Schmidt, Thomas Weißgärber, Bernd Kieback, Lars Röntzsch, Jie Fu |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Energy research
Materials science Dopant Hydrogen Renewable Energy Sustainability and the Environment Titanium tetrachloride Doping Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics chemistry.chemical_compound Hydrogen storage Fuel Technology chemistry Gravimetric analysis Dehydrogenation Lithium Doping methods Hydrogen storage material Lithium aluminum hydride |
| Zdroj: | Fu, J, Röntzsch, L, Schmidt, T, Tegel, M, Weißgärber, T & Kieback, B 2012, ' Comparative study on the dehydrogenation properties of TiCl4-doped LiAlH4 using different doping techniques ' International Journal of Hydrogen Energy, vol 37, no. 18, pp. 13387-13392 . DOI: 10.1016/j.ijhydene.2012.06.009 Fu, J, Röntzsch, L, Schmidt, T, Tegel, M, Weißgärber, T & Kieback, B 2012, ' Comparative study on the dehydrogenation properties of TiCl4-doped LiAlH4 using different doping techniques ', International Journal of Hydrogen Energy, vol. 37, no. 18, pp. 13387-13392 . https://doi.org/10.1016/j.ijhydene.2012.06.009 |
| DOI: | 10.1016/j.ijhydene.2012.06.009 |
| Popis: | Lithium aluminum hydride (LiAlH 4) is an attractive hydrogen storage material because of its comparatively high gravimetric hydrogen storage capacity. In this study, titanium tetrachloride (TiCl 4), which is liquid at room temperature, was chosen as dopant because of its high catalytic efficiency regarding the dehydrogenation of LiAlH 4. Three low-energy doping methods (additive dispersion via ball milling at low rotation speed, magnetic stirring and magnetic stirring in ethyl ether) with different TiCl 4 concentrations were compared in order to obtain optimum dehydrogenation properties of LiAlH 4. At 80 °C, TiCl 4-doped LiAlH 4 can release up to 6.5 wt.%-H 2, which opens the way to use of exhaust heat of PEM fuel cells to trigger the hydrogen release from LiAlH 4. Highlights: LiAlH 4 was doped with TiCl 4 using three different doping techniques. Optimum dehydrogenation properties were found testing various TiCl 4 concentrations. TiCl 4-doped LiAlH4 can release up to 6.5 wt.% hydrogen. Dehydrogenation kinetics of TiCl 4-doped LiAlH 4 was studied systematically at 80 °C. |
| Databáze: | OpenAIRE |
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