The results show that the DEE and THF adducts of calcium
tetrahydroaluminate can be prepared by ball milling under
inert conditions or by mechanically assisted wet-chemical
synthesis. For each process, the same metathesis reaction 2
can be applied. After separation from the byproduct by digesttion
or Soxhlet extraction, the organic solvent can be removmoved
almost completely in a drying procedure under vacuum
at elevated temperatures. Thus, gram amounts of calcium
tetrahydroaluminate with a purity of >90% are obtained