Preparation and Reactions
The compound is prepared from the elements under high pressures of H2 at 200 °C using triethylaluminium catalyst:
- Na + Al + 2 H2 → NaAlH4
As a suspension in diethyl ether, it reacts with lithium chloride to give the popular reagent lithium aluminium hydride:
- LiCl + NaAlH4 → LiAlH4 + NaCl
The compound reacts rapidly, even violently, with protic reagents, such as water, as described in this idealized equation:
- 4 H2O + NaAlH4 → "NaAl(OH)4" + 2 H2
Read more about this topic: Sodium Aluminium Hydride
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