Hydrogen release of catalyzed lithium aluminum hydride by a mechanochemical reaction
Journal of Alloys and Compounds Volume 462 Issue 1-2
Page 275-278
published_at 2008-08-25
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| File | |
| Title ( eng ) |
Hydrogen release of catalyzed lithium aluminum hydride by a mechanochemical reaction
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| Creator |
Kawai Yasuaki
Matsumoto Mitsuru
Haga Tetsuya
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| Source Title |
Journal of Alloys and Compounds
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| Volume | 462 |
| Issue | 1-2 |
| Start Page | 275 |
| End Page | 278 |
| Abstract |
The effects of various catalysts on the H2 release characteristics of LiAlH4 were studied. It was established that the catalytic activity defined by the H2 desorption capacity by a mechanochemical reaction decreased in the series TiCl3>ZrCl4>VCl3>NiCl2>ZnCl2. Transition metal trialuminides Al3X (X=Ti, Zr, V, Ni) were prepared by the mechanochemical reaction of LiAlH4 and the metal chlorides, while the reaction of LiAlH4 and ZnCl2 yields Zn. The high catalytic activity was attributed to the lower percentage d-character and the electronegativity of those transition metals. The catalytic activity of Ni was also improved with decreasing the Ni particle size. Those catalysts were classified to two groups (1. TiCl3, ZrCl4, 2. VCl3, NiCl2, Ni, nano-Ni) from the viewpoint of the H2 desorption mechanism.
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| Keywords |
Hydrogen absorbing materials
Metal hydrides
Mechanochemical processing
Catalysis
X-ray diffraction
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| NDC |
Chemistry [ 430 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Elsevier Science S.A.
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| Date of Issued | 2008-08-25 |
| Rights |
Copyright (c) 2007 Published by Elsevier B.V.
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0925-8388
[DOI] 10.1016/j.jallcom.2007.08.015
[NCID] AA10817249
[DOI] http://dx.doi.org/10.1016/j.jallcom.2007.08.015
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