Process for production of 1,2,2,2-tetrafluoroethyl difluoromethyl ether

摘要

A process is provided for the low temperature preparation of CF3CHFOCHF2 which comprises reacting CF3CHClOCHF2 with hydrogen fluoride in the presence of an antimony pentachloride catalyst or mixture of antimony pentachloride and antimony trichloride. The mole ratio of CF3CHClOCHF2 to HF is in the range of about 1.0:0.1 to about 1:7.