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:
Mar. 05, 2024
Filed:
Dec. 10, 2021
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Johan Anton, Dorsten, DE;
Michael Grass, Haltern am See, DE;
Johannes Kraft, Niederkassel, DE;
Thomas Schneider, Schermbeck, DE;
Grzegorz Ziomek, Recklinghausen, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 38/04 (2006.01); B01J 38/02 (2006.01);
U.S. Cl.
CPC ...
B01J 38/04 (2013.01); B01J 38/02 (2013.01);
Abstract
The invention provides a process for regenerating a catalyst used for the hydrogenation of an aromatic species, consisting of several steps. First the system is purged with nitrogen, then air is metered in stepwise, and the addition of nitrogen is subsequently ended until only air is present.