Zirconium (IV) hydroxide, often called hydrous zirconia is an ill-defined material or family of materials variously described as and . All are white solids with low solubility in water. These materials are widely employed in the preparation of solid acid catalysts.[1] [2]
These materials are generated by mild base hydrolysis of zirconium halides and nitrates. A typical precursor is zirconium oxychloride.[1]