| 摘要 |
The present invention relates to the field of saturated fluorohydrocarbons. The subject matter thereof is more particularly the production of 1‑chloro-2,2‑difluoroethane from 1,1,2‑trichloroethane and/or 1,2‑dichloroethylene. The present invention provides a process for producing 1‑chloro-2,2-difluoroethane from 1,1,2-trichloroethane and/or 1,2‑dichloroethylene comprising (i) at least one step during which the 1,1,2‑trichloroethane and/or the 1,2‑dichloroethylene reacts or react with hydrofluoric acid in the gas phase, optionally in the presence of an oxidizing agent, in the presence or in the absence of a fluorination catalyst, to give a stream comprising 1‑chloro-2,2-difluoroethane, hydrochloric acid, hydrofluoric acid and at least one C compound(s) chosen from 1‑chloro-2‑fluoroethylenes (cis and trans), 1,2‑dichloro-2-fluoroethane and, optionally, unreacted 1,1,2‑trichloroethane and/or 1,2‑dichloroethylene. |
