Journal
INORGANICA CHIMICA ACTA
Volume 361, Issue 2, Pages 473-478Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2007.04.044
Keywords
metal hydrides; alkali metal hydrides; aluminum hydrides; hydrogen storage materials; dimethyl ether; powder X-ray diffraction; mechanochemical synthesis
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A novel method of preparation of hexahydroaluminate complexes M3AlH6 (M = Li, Na or K) from the corresponding alkali metal hydride and tetrahydroaluminate has been explored, using dimethyl ether (Me2O) as a solvent at near-ambient temperatures. The results are compared with those obtained using a recently established mechanochemical approach. Characterization of the products by powder X-ray diffraction revealed M3AlH6 to be formed in high yield for M = Li and Na, but not for M = K. The attempted preparation of Li2NaAlH6 and Li2KAlH6 was unsuccessful. (c) 2007 Elsevier B.V. All rights reserved.
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