Process for producing perfluoro organic peroxide
View Patent ↗To provide a process for safely producing a perfluoroacyl peroxide with good productivity. By supplying a perfluoroacyl halide-containing organic solvent solution, an aqueous solution of hydrogen peroxide or a metal peroxide, and an aqueous basic alkali metal compound solution to a tubular reactor to allow them to react with one another, in a flow rate ratio of, as represented by molar ratio of the compounds in the solutions, from 1.00 to 1.35 of the basic alkali metal compound and from 0.60 to 40 of hydrogen peroxide or the metal peroxide per 1 of the perfluoroacyl halide, the yield of a perfluoroacyl peroxide based on the material perfluoroacyl halide can be remarkably improved as compared with conventional technique.
1. A process for continuously producing a perfluoroacyl peroxide, which comprises introducing a perfluoroacyl halide-containing organic solvent solution, an aqueous solution of hydrogen peroxide or a metal peroxide and an aqueous solution of a basic alkali metal compound to an inlet of a tubular reactor, mixing the solutions in the tubular reactor to allow them to react with one another, and sending a liquid containing a perfluoroacyl peroxide out from an outlet of the tubular reactor, wherein the perfluoroacyl halide-containing organic solvent solution, the aqueous solution of hydrogen peroxide or a metal peroxide and the aqueous solution of a basic alkali metal compound are introduced to the tubular reactor in a flow rate ratio of, as represented by molar ratio of the compounds in the solutions, from 1.00 to 1.35 of the basic alkali metal compound and from 1 to 10 of hydrogen peroxide or the metal peroxide per 1 of the perfluoroacyl halide,
wherein the perfluoroacyl halide is C 2 F 5 (CO)Cl.
2. The production process according to claim 1 , wherein the aqueous solution of hydrogen peroxide or a metal peroxide is an aqueous hydrogen peroxide solution.
3. The production process according to claim 1 , wherein the aqueous solution of a basic alkali metal compound is an aqueous potassium hydroxide solution.
4. The production process according to claim 1 , wherein the internal cross sectional area of the tubular reactor is from 1.0×10 −7 to 5.0×10 −4 m 2 .
5. The production process according to claim 1 , wherein the tubular reactor has a static mixing device in its interior reaction zone.
6. The production process according to claim 1 , wherein the reaction temperature is from −10° C. to 30° C.
7. The production process according to claim 1 , wherein the concentration of the perfluoroacyl halide in the perfluoroacyl halide-containing organic solvent solution is from 3 to 60 mass %.
8. The production process according to claim 1 , wherein the concentration of hydrogen peroxide or the metal peroxide in the aqueous solution of hydrogen peroxide or a metal peroxide is from 5 to 50 mass %.
9. The production process according to claim 1 , wherein the concentration of the basic alkali metal compound in the aqueous solution of a basic alkali metal compound is from 5 to 50 mass %.
10. The production process according to claim 1 , wherein the tube length of a reaction part of the tubular reactor is from 0.05 to 10 m.
11. The production process according to claim 1 , wherein the organic solvent is a fluorinated organic solvent.
12. The production process according to claim 1 , wherein the flow rate ratio is 1.02 to 1.30 of the basic alkali metal compound per 1 of the perfluoroacyl halide.
13. The production process according to claim 1 , wherein the flow rate ratio is 1.04 to 1.19 of the basic alkali metal compound per 1 of the perfluoroacyl halide.
14. The production process according to claim 1 , wherein the perfluoroacyl peroxide is obtained in a yield of at least 75%.
15. The production process according to claim 14 , wherein the yield is from 80 to 100%.