Process for regeneration of hydrogenation catalysts

US11701649B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Johannes Kraft · Niederkassel, DE
• Lena Altmann · Recklinghausen, DE
• Johan Anton · Dorsten, DE
• Michael Grass · Bend, US

Key dates

• Filing date: Dec 6, 2021
• Grant date: Jul 18, 2023
• Expiry date: Dec 13, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention provides a process for regenerating a catalyst used for the ring hydrogenation of an aromatic species, especially an aromatic ester, wherein a gas stream containing a particular amount of oxygen is used for the regeneration.