Catalyst production for use in a process for fluorination of...

Details Catalyst production for use in a process for fluorination of... Catalyst production for use in a process for fluorination of...

B - Operations, Transporting

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252/103, 23/200,

B01J 38/64 (2006.01) B01J 23/92 (2006.01) C01B 21/48 (2006.01) C07C 17/087 (2006.01) C07C 17/093 (2006.01) C07C 17/20 (2006.01) C07C 17/21 (2006.01) C07C 17/38 (2006.01) C07C 19/08 (2006.01) C07C 47/395 (2006.01)

Patent

CA 2141184

A process for the removal of fluoride from a spent chromium-based fluorination catalyst by contacting the catalyst with potassium hydroxide to produce a suspension of solid hydrated chromium oxide in aqeuous potassium fluoride. The solid hydrat- ed chromium oxide may be separated from the solution, washed with water and/or aqueous acid, and contacted with nitric acid to produce a chromium (III) nitrate solution from which a chromium-based catalyst may be prepared by precipitation of hydrat- ed chromium oxide therefrom with aqueous alkali, and washing, drying and calcining the hydrated chromium oxide.

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