Effect of TixAly catalysts on hydrogen storage properties of LiAlH4 and NaAlH4

    Authors

    M. Resan; M. D. Hampton; J. K. Lomness;D. K. Slattery

    Comments

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    Abbreviated Journal Title

    Int. J. Hydrog. Energy

    Keywords

    hydrides; alanates; titanium doping; ALUMINUM HYDRIDES; METAL HYDRIDES; TRANSFORMATIONS; DECOMPOSITION; Chemistry, Physical; Electrochemistry; Energy & Fuels

    Abstract

    The high catalytic activities of TiCl4 and TiCl3 on the hydrogen storage properties of alkali metal aluminum hydrides have been attributed to intennetallic TiAl3. Therefore, in this work, the hydrogen storage properties of LiAlH4 and NaAlH4 doped with titanium aluminum alloys were investigated. The dopants were incorporated into the alanates by ball milling. The catalysts studied included TiAl3, Ti3Al, elemental titanium, and elemental aluminum. Ball milling in the absence of the catalyst was found to decrease the release temperature of hydrogen. Doping LiAlH4 with Ti3Al, TiAl3 and elemental aluminum additionally reduced the temperature required for hydrogen release. That effect was not observed for mixtures with NaAlH4. (c) 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

    Journal Title

    International Journal of Hydrogen Energy

    Volume

    30

    Issue/Number

    13-14

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    1417

    Last Page

    1421

    WOS Identifier

    WOS:000233293500008

    ISSN

    0360-3199

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