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:
Dec. 28, 1976
Filed:
Dec. 03, 1975
Applicant:
Inventors:
Jean Grosbois, L'Isle Adam, F;
Maryvonne Thomas, Boulogne-Billancourt, F;
Assignee:
Rhone-Poulenc Industries, Paris, F;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C22B / ;
U.S. Cl.
CPC ...
7510 / ; 75121 ; 423 22 ;
Abstract
The invention concerns the recovery of the constituents of catalysts containing platinum and iridium. They are recovered by substantially totally solubilizing the catalysts with an oxidizing solution of hydrochloric acid, and by extracting the precious metals with an anionic resin from which the iridium is selectively washed out. This method enables the platinum and iridium to be completely separated and has the advantage of using only one bed of anionic resin.