the present invention, a Lewis acid catalyst and, as cocatalyst FeCl 3 with hydrofluoric acid in the presence of the liquid phase fluorination of 1, 2-dichloroethane is related to the process for preparing a 1,1-difluoro ethane. The present invention also provides using the method described above, relates to a method for preparing 1,1-difluoro-ethylene.
展开▼