Zirconium and Yttrium-Based Composition, Method for Preparing Same and Use Thereof in a Catalyst System

Abstract

Zirconium and yttrium oxide-based composition with a specific surface area of at least 12 m2/g following calcination at 1000° 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.

Dependencies are inferred from the claim text.