Hydrolysis and Chemical Activity of Aqueous TiCl4 Solutions

Resumo

We have studied the physical and chemical properties of aqueous titanium(IV) chloride solutions. The results demonstrate that, during TiCl₄ dissolution in water, only part of the titanium(IV) chloride hydrolyzes. Aqueous solutions with up to 60 wt % TiCl₄ contain unhydrolyzed TiCl₄ species. Titanium(IV) chloride solutions have an increased chemical activity for aluminum hydroxide and aluminum oxide compared to hydrochloric acid. It has been shown that reactions of metallic aluminum with titanium(IV) chloride solutions can yield lower titanium(III) chlorides.