Method for preparing fluorination catalyst used to fluorinate ha

Details Method for preparing fluorination catalyst used to fluorinate ha Method for preparing fluorination catalyst used to fluorinate ha

1995-05-05

1998-12-15

Wood, Elizabeth D.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Halogen or compound containing same

502224, 502305, 502319, B01J 27132

Patent

active

058496580

ABSTRACT:
A method for preparing a fluorination catalyst is disclosed, wherein the catalyst contains chromium oxide, has a specific surface area of from 170 m.sup.2 g to 300 m.sup.2 /g, catalyzes the fluorination of a halogenated hydrocarbon with hydrogen fluoride, and has a high activity and long catalyst life. The method includes mixing an aqueous solution of a chromium salt with aqueous ammonia to precipitate chromium hydroxide, drying the precipitated chromium hydroxide, sintering the dried chromium hydroxide, and fluorinating the sintered chromium hydroxide to obtain the chromium oxide catalyst.

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