Preparation process of 227
AssigneeAusimont S.p.A.
InventorsLetanzio Bragante, Paolo Cuzzato
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Abstract
Perfluoropropene (PFP) hydrofluorination process in gaseous phase to obtain CF3—CHF—CF3 (A-227ea), characterized in that as catalyst fluorinated alumina containing at least 90% by weight of AlF3, is used, the HF/PFP molar ratios range from about 4:1 to 20:1, the hydrofluorination process temperature being in the range 320°-420° C.
Claims9
A process for hydroflourinating perfluoropropene (PFP) in gaseous phase to obtain CF3—CHF—CF3 (227ea), characterized by the presence of a fluorinated alumina catalyst containing at least 90% by weight of AlF3, optionally containing a compound of trivalent chromium oxide, oxyfluoride or fluoride:
- a HF/PFP molar ratio range from about 4:1 to 20:1, the hydrofluorination process temperature being in the range 320-420° C., the feeding gas pressure being in the range from 1 to 30 absolute atm.
Dependencies are inferred from the claim text.