Process for reactivating fluorination catalysts

US4145311A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Sigmar-Peter von Halasz · Kelkheim, DE
• Jürgen Korinth · Erlangen, DE

Key dates

• Filing date: Jan 19, 1978
• Grant date: Mar 20, 1979
• Expiry date: Jan 19, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J27/32
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Chromoxyfluoride catalysts which are used for converting chlorocarbons with hydrogen fluoride into fluorochlorocarbons lose a part of their activity over a period of time. Reactivation of the catalysts occurs upon treatment with fluorine at temperatures of from 70 to 300.degree. C.