Sol-gel synthesis of yttria stabilized zirconia membranes through controlled hydrolysis of zicronium alkoxide

摘要

Yttria stabilized zirconia (YSZ) polymeric sols were synthesized by contr9lled hydrolysis and condensation of zirconium tetra-n-propoxide. Yttrium nitrate was added before hydrolysis as the source of yttria. Acetylacetone was used as chelating ligand to modify the reaction rate of zirconium alkoxide. The dependence of YSZ sol formation as well as gelation time was investigated experimentally on the contents of acetylacetone, n-propanol (solvent) water for hydrolysis.