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Kinetics study of sodium alanate with catalyst TiO2

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  • Khan, Jameel
  • Jain, I.P.

Abstract

Complex aluminum hydrides (alanates) are among the most promising material for hydrogen storage due to their high hydrogen content and fast kinetics and sodium alanate is particularly important due to its favorable reversibility too. In the present work TiO2 catalyst is used to improve the desorption kinetics of sodium alanate by first Ball milling it to make its powder. Powered TiO2 catalyst and NaAlH4 were hand milled in glove box in an argon atmosphere. It is found that catalyst is also playing its role in reducing the temperature of kinetics. XRD analysis shows that TiO2 remains stable with NaAlH4 after milling. Pressure–Composition–Temperature (PCT) isotherm was studied using a Sivert type apparatus to investigate hydrogen storage capacity and kinetics. It is interesting that the hydrogen storage capacity increases with increase in amount of catalyst. It was observed that TiO2 doped NaAlH4 has faster kinetics with improved hydrogen storage capacity of 3.6–5.1wt% at 250°C temperature which is higher than the other studies.

Suggested Citation

  • Khan, Jameel & Jain, I.P., 2015. "Kinetics study of sodium alanate with catalyst TiO2," Renewable and Sustainable Energy Reviews, Elsevier, vol. 52(C), pages 504-507.
    • Handle: RePEc:eee:rensus:v:52:y:2015:i:c:p:504-507
    DOI: 10.1016/j.rser.2015.07.136
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    References listed on IDEAS

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    1. Louis Schlapbach & Andreas Züttel, 2001. "Hydrogen-storage materials for mobile applications," Nature, Nature, vol. 414(6861), pages 353-358, November.
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