Method for separating a mixture comprising at least an...

Details Method for separating a mixture comprising at least an... Method for separating a mixture comprising at least an...

C - Chemistry, Metallurgy

07

C

C07C 17/38 (2006.01) C01B 7/19 (2006.01) C07C 17/20 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2355385

The invention concerns a method for separating a mixture comprising at least a hydrofluoroalkane and hydrogen fluoride, which consists in reacting a hydrofluoroalkane/hydrogen fluoride mixture with at least a chlorinated or chlorofluorinated precursor of hydrofluoroalkane. The invention also concerns a method for preparing a hydrofluoroalkane comprising such separation, combined with a catalytic reaction step. The invention further concerns azeotropic compositions.

Procédé de séparation d'un mélange comprenant au moins un hydrofluoroalcane et du fluorure d'hydrogène, selon lequel on fait réagir un mélange hydrofluoroalcane/fluorure d'hydrogène avec au moins un précurseur chloré ou chlorofluoré de l'hydrofluoroalcane. Procédé de préparation d'un hydrofluoroalcane comprenant une telle séparation, combinée à une étape réactionnelle catalytique. Compositions azéotropiques.

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