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:
Jun. 07, 2022
Filed:
Feb. 10, 2012
Bertrand Guichard, Izeaux, FR;
Laurent Simon, Villeurbanne, FR;
Valentina DE Grandi, Schaerbeek, BE;
Delphine Minoux, Nivelles, FR;
Jean-pierre Dath, Beloeil, BE;
Bertrand Guichard, Izeaux, FR;
Laurent Simon, Villeurbanne, FR;
Valentina De Grandi, Schaerbeek, BE;
Delphine Minoux, Nivelles, FR;
Jean-Pierre Dath, Beloeil, BE;
IFP ENERGIES NOUVELLES, Rueil-Malmaison, FR;
TOTAL RAFFINAGE MARKETING, La Defense, FR;
Abstract
A catalyst which comprises an amorphous support based on alumina, a C1-C4 dialkyl succinate, citric acid and optionally acetic acid, phosphorus and a hydrodehydrogenating function comprising at least one element from group VIII and at least one element from group VIB; the most intense bands comprised in the Raman spectrum of the catalyst are characteristic of Keggin heteropolyanions (974 and/or 990 cm), C1-C4 dialkyl succinate and citric acid (in particular 785 and 956 cm). Also a process for preparing said catalyst in which a catalytic precursor in the dried, calcined or regenerated state containing the elements of the hydrodehydrogenating function, and optionally phosphorus, is impregnated with an impregnation solution comprising at least one C1-C4 dialkyl succinate, citric acid and optionally at least one compound of phosphorus and optionally acetic acid, and is then dried. Further, the use of said catalyst in any hydrotreatment process.