ZIRCONIUM AND YTTRIUM OXIDE-BASED COMPOSITION, METHOD FOR PREPARING SAME AND USE THEREOF IN A CATALYST SYSTEM

摘要

Zirconium and yttrium oxide-based composition with a specific surface area of at least 12 m<2>/g following calcination at 1000 DEG C for 10 hours. This composition is obtained via a method wherein a mixture of zirconium and yttrium compounds is precipitated with a base; the resulting precipitate-containing medium is heated; a compound selected from anionic surfactants, non-ionic surfactants, polyethylene glycols, carboxylic acids and the salts thereof and carboxymethylated fatty alcohol ethoxylate-type surfactants is then added to said precipitate, and, finally, the precipitate is calcined. Said composition can be used as a catalyst.