PROCESS FOR PRODUCING DIFLUOROMETHANE

摘要

A process for producing difluoromethane by the reaction of dichloromethane with hydrogen fluoride in the presence of a catalyst in a liquid phase economically and safety, wherein the reaction is conducted by using antimony pentafluoride or a mixture thereof with antimony trifluoride as the catalyst at a temperature of 80-150 ~C under a pressure of 8-80 kg/cm2.