FIELD: chemistry.
SUBSTANCE: invention relates to a fluorination method of producing fluoro-olefin, which includes a pre-activation step, which includes contacting a fluorination catalyst with an oxidant-containing gas stream which does not contain hydrogen fluoride, and alternating reaction steps and regeneration steps, wherein the reaction steps include gas-phase reaction of a chlorinated compound with hydrogen fluoride in the presence of a fluorination catalyst to obtain a fluorinated compound, and the regeneration step includes contacting the fluorination catalyst with the oxidant-containing gas stream.
EFFECT: high selectivity of the process owing to catalyst regeneration in the presence of an oxygen oxidant.
19 cl, 2 tbl, 7 ex
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