PROCESS FOR THE MANUFACTURE OF 1,1,1,2-TETRAFLUOROETHANE

摘要

An improved process for the vapor phase fluorination, especially fluorination of 1,1,1-trifluoro-2-chloroethane (CFC-133a) with HF to produce 1,1,1,2-tetrafluoroethane (HFC-134a) employs a catalyst which preferably consists essentially of boehmite and Cr(OH)Cl2.2H2O, combined and extruded to form particulates and then heated in nitrogen.