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Influence of the ball milling conditions on the preparation of rare earth aluminum hydrides

MPS-Authors
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Pommerin,  André
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Felderhoff,  Michael
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Weidenthaler,  Claudia
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Pommerin, A., Felderhoff, M., Schüth, F., & Weidenthaler, C. (2010). Influence of the ball milling conditions on the preparation of rare earth aluminum hydrides. Scripta Materialia, 63(11), 1128-1131. doi:10.1016/j.scriptamat.2010.08.020.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-8DE5-D
Abstract
The ball milling conditions in the preparation of rare earth aluminum hydrides from NaAlH4 and rare earth chlorides have a significant influence on product formation. Defined milling times and appropriate rotational speeds are required to obtain the desired products. It has been shown that starting directly from Na3AlH6 does not lead to the formation of REAlH6. Starting from rare earth iodides instead of chlorides allows dissolution of the alkali metal iodide formed and, therewith, the preparation of salt-free rare earth aluminum hydrides.