MANUFACTURING PROCESS FOR 227

摘要

PURPOSE: A manufacturing process for obtaining a CF3-CHF-CF3(227ea) is provided to contain a high yield rate and selectivity by using a special catalysis and a perfluoropropene hydro-fluorinating process in a vapor containing under 0.05 wt% of the perfluoropropene amount at the end of a reaction. CONSTITUTION: A perfluoropropene hydro-fluorinating process in a gaseous body for obtaining a CF3-CHF-CF3(A-227ea) comprises: using a fluorinated alumina containing 90 wt% of AIF3 at least as a catalysis; a molecular ratio of the HF/PFP reaching to 4:1 or 20:1; 1¯30 absolute atmosphere of a supplying gaseous body pressure; and 320-420°C for the hydro-fluorinating processing temperature.