Preparation of halogen and hydrogen containing alkenes over metal fluoride catalysts

US8338651B2 · kind B2 · utility

Assignee

• SOLVAY FLUOR GMBH · DE

Inventors

• Ercan Uenveren · Hannover, DE
• Erhard Kemnitz · Berlin, DE
• Stephan Rudiger · Rangsdorf, DE
• Anton Dimitrov · Berlin, DE
• Johannes Eicher · Garbsen, DE

Key dates

• Filing date: Jul 11, 2008
• Grant date: Dec 25, 2012
• Expiry date: Jul 28, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Halogenated alkenes, especially fluorinated alkenes can be prepared from halogenated and fluorinated alkanes, respectively, by dehydrohalogenation or dehydrofluorination in the presence of a high-surface metal fluoride or oxifluoride. Preferably, trifluoroethylene, pentafluoropropene, tetrafluorobutenes or trifluorobutadiene are prepared. Aluminum fluoride is highly suitable. The metal fluoride or oxifluoride can be applied supported on a carrier.