Title

Effects of various catalysts on hydrogen release and uptake characteristics of LiAlH4

Authors

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; ALUMINUM HYDRIDES; STORAGE MATERIALS; METAL HYDRIDES; DECOMPOSITION; NAALH4; Chemistry, Physical; Electrochemistry; Energy & Fuels

Abstract

The effects of various catalysts on the hydrogen release characteristics of LiAlH4 were studied. The catalysts were incorporated into the alanate by ball milling. The catalysts studied included elemental titanium, TiH2, TiCl4, TiCl3, AlCl3, FeCl3, elemental iron, elemental nickel, elemental vanadium, and carbon black. Dehydriding/rehydriding properties were characterized by using differential scanning calorimetry coupled with pressure measurement and X-ray diffraction. The addition of TiCl3 and TiCl4 to LiA1H(4) eliminated the first step of hydrogen evolution and significantly lowered decomposition temperature of the second step. Doping with elemental iron caused only a slight decrease in the amount of hydrogen released and did not eliminate the first step of hydrogen evolution. Ball milling in the absence of the catalyst was found to decrease the release temperature of hydrogen, while doping with elemental iron did not have any additional effect on the temperature of hydrogen release of LiAlH4. (c) 2005 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

1413

Last Page

1416

WOS Identifier

WOS:000233293500007

ISSN

0360-3199

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