METHOD OF PREPARING HEXAFLUOROACETONE Russian patent published in 2000 - IPC

Abstract RU 2156756 C2

FIELD: preparation of organofluorine products. SUBSTANCE: hexafluoroacetone is prepared by reacting 2- hydroheptafluoropropane with molecular oxygen at 150-300 C in the presence of catalyst which is activated carbon promoted by alkali metal fluorides up to 60 wt %. Hydroheptafluoropropane to molecular oxygen molar ratio ranges from 1: 0.1 to 10. Yield of hexafluroacetone in terms of coolant 227 being converted is 77-83%. EFFECT: simplified preparation method, cheaper and accessible catalysts and wider range of raw materials used in said process. 2 cl, 1 ex, 1 tbl

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RU 2 156 756 C2

Authors

Igumnov S.M.

Shipigusev A.A.

Lekontseva G.I.

Soshin V.A.

Dates

2000-09-27—Published

1998-11-24—Filed