Patent ID: 8329964
Filing Date: 2012-12-11
Classification: B01J,C07C

Abstract:
1. A continuous gas-phase process for preparing 2,3,3,3-tetrafluoro-1-propene, comprising the following steps: (i) hydrogenation of hexafluoropropylene to 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorination of the 1,1,1,2,3,3-hexafluoropropane obtained in the preceding step to 1,2,3,3,3-pentafluoro-1-propene; (iii) hydrogenation of the 1,2,3,3,3-pentafluoro-1-propene obtained in the preceding step to 1,1,1,2,3-pentafluoropropane; (iv) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the preceding step to 2,3,3,3-tetrafluoro-1-propene.