Catalyzed complex metal hydrides
作者： Borislav Bogdanović , Gary Sandrock
DOI: 10.1557/MRS2002.227
关键词:
摘要: Complex hydrides are mixed ionic-covalent compounds that can serve as reversible H 2 storage media only when they catalyzed by a transition metal such Ti. As the prime example, phenomenology of Ti-catalyzed sodium alanate (NaAlH 4 ) is reviewed from historical perspective. Dehydriding yields theoretical 5.6 wt% during two-step decomposition, NaAlH → Na 3 AlH 6 NaH + Al, although 100% recovery not currently possible. be discharged and recharged at practical rates 125°C. More work needed on alanates, in particular, well identification optimization catalytic mechanism broad extension concept to other than Na-based alanates. The possibility an even further complex (e.g., borohydrides transition-metal complexes) discussed.
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