Process for the preparation of 2, 3, 3, 3-trifluoropropene

Details Process for the preparation of 2, 3, 3, 3-trifluoropropene Process for the preparation of 2, 3, 3, 3-trifluoropropene

C - Chemistry, Metallurgy

07

C

C07C 17/25 (2006.01) C07C 21/18 (2006.01)

Patent

CA 2724174

The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1, 2,3,3, 3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating (245eb) to produce (1234yf).

L'invention porte sur un procédé permettant la fabrication de 1234yf et comprenant (a) la mise en contact de 1,1,2,3,3,3-hexafluoropropène (1216) avec de l'hydrogène en présence d'un catalyseur d'hydrogénation pour produire du 1,1,2,3,3,3-hexafluoropropane (236ea); (b) la déshydrofluoration du 236ea pour produire du 1,2,3,3,3-pentafluoropropène (1225ye); (c) la mise en contact du 1225ye avec de l'hydrogène en présence d'un catalyseur d'hydrogénation pour produire du 1,2,3,3,3-pentafluoropropane (245eb); et (d) la déshydrofluoration du 245eb pour produire du 1234yf.

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