Process

Details Process Process

C - Chemistry, Metallurgy

07

C

C07C 17/20 (2006.01) C07C 17/04 (2006.01) C07C 17/25 (2006.01) C07C 19/08 (2006.01) C07C 19/10 (2006.01) C07C 21/18 (2006.01)

Patent

CA 2721124

The invention provides a process for the preparation of 2,3,3,3- tetrafluoropropene (1234yf) comprising (a) contacting 1,1,1-trifluoro-2,3-difluoropropane (243db) with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst to produce a compound having the formula CF3CHFCH2X, wherein X is Cl or F, and (b) dehydrohalogenating the compound of formula CF3CHFCH2X to produce 1234yf.

Linvention concerne un procédé de préparation du 2,3,3,3-tétrafluoropropène (1234yf) qui comprend les étapes consistant à : (a) mettre en contact du 1,1,1-trifluoro-2,3-difluoropropane (243db) avec de lacide fluorhydrique (HF) en présence dun catalyseur zinc/chrome pour produire un composé ayant la formule CF3CHFCH2X, où X représente Cl ou F, et (b) déshydrohalogéner le composé de formule CF3CHFCH2X pour produire 1234yf.

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