Method for the preparation of 2 chloro 1,1,1,2,3,3,3...

C - Chemistry – Metallurgy – 07 – C

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C07C 17/06 (2006.01) B01J 23/26 (2006.01) C07C 17/20 (2006.01) C07C 17/23 (2006.01) C07C 21/18 (2006.01)

Patent

CA 2705017

A method of catalytically converting 2,2, dichlorohexafluoropropane (HFC- 216aa) into 2 chloro 1,1,1,2,3,3,3 heptafluoropropane (HFC-217ba) including the step of exposing the 2,2 dichlorohexafluoropropane to a chromium-containing catalyst comprising a metal oxide, a halogenated metal oxide or a metal oxyhalide, which chromium-containing catalyst comprises 0.01% to 5.0% by weight zinc or a compound of zinc.

L'invention porte sur un procédé qui permet la conversion catalytique de 2,2, dichlorohexafluoropropane (HFC- 216aa) en 2 chloro 1,1,1,2,3,3,3 heptafluoropropane (HFC-217ba). Le procédé précité consiste à exposer le 2,2 dichlorohexafluoropropane à un catalyseur contenant du chrome qui comprend un oxyde métallique, un oxyde métallique halogéné ou un oxyhalogénure métallique, le catalyseur contenant du chrome renfermant de 0,01% à 5,0% en poids de zinc ou d'un composé de zinc.

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