Process for preparing pentafluoroethane by hydrogenolysis of...

Details Process for preparing pentafluoroethane by hydrogenolysis of... Process for preparing pentafluoroethane by hydrogenolysis of...

C - Chemistry, Metallurgy

07

C

C07C 17/00 (2006.01) B01J 23/42 (2006.01) C07C 17/23 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2064139

This invention involves the preparation of pentafluoroethane (F-125) by catalytic hydrogenation of chloropentafluoroethane (F-115) in the vapour phase. The use of a palladium-based catalyst deposited on a support of aluminum, fluorinated alumina or aluminum fluoride provides excellent selectivity for F-25, and avoids the formation of 1,1,1-trifluoroethane (F-143a).

L'invention concerne la préparation du pentafluoroéthane (F125) par hydrogénation catalytique en phase vapeur du chloropentafluoroéthane (F115). L'emploi d'un catalyseur à base de palladium déposé sur un support d'alumine, alumine fluorée ou fluorure d'aluminium, permet d'obtenir d'excellentes sélectivités en F25 et d'éviter la formation de 1,1,1-trifluoroéthane (F143a).

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