The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2013
Filed:
Jan. 10, 2011
Simon Ifrah, Lagord, FR;
Emmanuel Rohart, Sainte Soulle, FR;
Julien Hernandez, Antony, FR;
Stéphane Denaire, Jouy le Moutier, FR;
Simon Ifrah, Lagord, FR;
Emmanuel Rohart, Sainte Soulle, FR;
Julien Hernandez, Antony, FR;
Stéphane Denaire, Jouy le Moutier, FR;
Rhodia Operations, Aubervilliers, FR;
Abstract
A composition is described that includes oxides of zirconium, cerium and another rare earth different from cerium, having a cerium oxide content not exceeding 50 wt % and, after calcination at 1000° C. for 6 hours, a maximal reducibility temperature not exceeding 500° C. and a specific surface of at least 45 m/g. The composition can be prepared according to a method that includes continuously reacting a mixture that includes compounds of zirconium, cerium and another rare earth having a basic compound for a residence time not exceeding 100 milliseconds, wherein the precipitate is heated and contacted with a surfactant before calcination.