Regeneration of metal promoted platinum group catalyst by superhalogenating at the end of a hydrocarbon conversion cycle

US4148749A · kind A · utility

Assignee

• Compagnie Francaise de Raffinage · FR

Inventors

• Charles H. G. ab der Halden · Chaville, FR
• Marcellin Espeillac · Versailles, FR
• Georges Szabo · Montivilliers, FR

Key dates

• Filing date: Dec 22, 1976
• Grant date: Apr 10, 1979
• Expiry date: Dec 22, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S585/906
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for regenerating hydrocarbon conversion catalysts, particularly for reforming and isomerization, which comprises superhalogenating the deactivated catalysts, burning the accumulated coke in a controlled manner preferably in a series of steps at different temperatures and oxygen percentages with an oxygen containing gas stream; treating the combusted catalyst with a further gas stream containing oxygen and a halogen (preferably chlorine), and thereafter reducing the catalyst with hydrogen in the practical absence of oxygen.