PROCESS FOR PRODUCING DIFLUOROMETHANE AND DIFLUOROCHLOROMETHANE

摘要

The present invention is directed to a process for producing difluoromethane and difluorochloromethane. The process comprises fluorinatin g dichloromethane and trichloromethane with hydrogen fluoride in a liquid phas e in the presence of a catalyst in one reaction apparatus under the conditions th at a reaction pressure is from 1 to 20 kg/cm2 and a reaction temperature is from 50.degree.C to 150.degree.C. With this process the difluoromethane and difluorochloromethane can be simultaneously or alternatively produced in an economical/safe manner in one reaction apparatus.