ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Conductometric study of the composition of aluminum chloride-lithium aluminum hydride AICl₃—LiAIH₄ electrolyte in tetrahydrofuran

M. Galová

Department of Chemistry, Faculty of Metallurgy, Technical University, 043 85 Košice

Abstract: Solution consisting of LiAIH₄ and AlCl₃ in tetrahydrofuran is suitable electrolyte for aluminium electrodeposition. The components of the solution undergo chemical reaction the products of which are ionized particles: Li⁺ cation and complex anions of the general formula AlCl_mH^-_4-m, m being given by the mole ratio of both components. The conductance of the mixed solution is therefore higher than that of the single components solution. The maximum conductance is reached at the mole ratio 2LiAIH₄: AlCl₃ where the optimum anionic complex formation occurs. The excess of AlCl₃ over this ratio causes more remarkable decrease in conductance than the excess ofLiAIH₄. Aluminium exists in this solution dominantly in the form of anions and neutral molecules. Increase in the total electrolyte concentration results, at the suitable mole ratio of the components, in a linear increase of the conductivity.

Full paper in Portable Document Format: 366a791.pdf

Chemical Papers 36 (6) 791–797 (1982)