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, 1993
Filed:
May. 13, 1992
Applicant:
Inventors:
Thierry Chopin, Saint Denis, FR;
Georges Dovergne, Salindres, FR;
Jean-Luc Le Loarer, Salindres, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502238 ; 502263 ;
Abstract
Thermally stable alumina having a high specific surface at elevated temperatures, well suited as a catalyst support material, e.g., as the support substrate of catalysts useful for the conversion of exhaust gases emanating from internal combustion engines, contain an effective heat stabilizing amount of silica, such silica essentially being distributed within the crystalline network/structure of the alumina, and such silica-stabilized alumina having an isoelectric point above 7 and a reduced capacity for the isomerization of olefins.