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. 03, 1996
Filed:
Apr. 28, 1994
Applicant:
Inventor:
Marc Mercier, Ales, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie Cedex, FR;
Primary Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423626 ; 423628 ;
Abstract
Alumina agglomerates having controlled porosity and excellent mechanical properties, well suited as catalyst supports and adsorbents, are produced by (a) agglomerating an alumina powder prepared by rapidly dehydrating an aluminum hydroxide, (b) aging the agglomerates thus formed in an atmosphere of controlled humidity, (c) impregnating such aged agglomerates with a solution of at least one acid, (d) hydrothermally treating the thus impregnated agglomerates in a confined enclosure, and then (e) drying and calcining the agglomerates thus treated.