Process for the manufacture of 2-chloro-1,1,1,2-tetrafluoropropane by liquid phase fluorination of 2-chloro-3,3,3-trifluoropropene
AssigneeArkema France
InventorsAnne PIGAMO, Laurent WENDLINGER, Philippe BONNET
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Abstract
Process of catalytic fluorination in liquid phase of product 2-chloro-3,3,3-trifluoropropene into product 2-chloro-1,1,1,2-tetrafluoropropane, with an ionic liquid based catalyst. Process for manufacturing 2,3,3,3-tetrafluoropropene.
Claims15
Process of catalytic fluorination in liquid phase of product 2-chloro-3,3,3-trifluoropropene into product 2-chloro-1,1,1,2-tetrafluoropropane, with an ionic liquid as a catalyst.
Process according to one of claims 1 to 9, in which the temperature of the reaction ranges between 30° C. and 200° C., preferably between 40° C. and 170° C., advantageously between 50° C. and 150° C.
Process according to one of claims 1 to 10, in which the pressure of the reaction is higher than 2 bar, preferably between 4 and 50 bar, in particular between 5 and 15 bar.
The process according to any one of the preceding claims which is continuous.
Process for preparing 2,3,3,3-tetrafluoropropene, comprising the steps of:
- (i) preparing 2-chloro-1,1,1,2-tetra fluoro propane by the process according to any one of the preceding claims;
- (ii) dehydrochlorinating said 2-chloro-1,1,1,2-tetrafluoropropane into 2,3,3,3-tetra fluoropropene.
Dependencies are inferred from the claim text.