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AssigneeArkema France
InventorsDominique GARRAIT, Anne PIGAMO, Laurent WENDLINGER
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The present invention relates to a process for modifying the fluorine distribution in a hydrocarbon compound in the presence of a catalyst, characterized by the use, as catalyst, of a solid composition comprising at least one component containing chromium oxyfluoride or fluoride of empirical formula CrxM(1-x)OrFs, where 2r+s is greater than or equal to 2.9 and less than 6, M is a metal chosen from columns 2 to 12 of the Periodic Table of the Elements, x has a value from 0.9 to 1, s is greater than 0 and less than or equal to 6 and r is greater than or equal to 0 and less than 3, the said solid composition having a crystallinity of less than 20% by weight. The present invention also relates to the solid composition per se.
A process for modifying the fluorine distribution in a hydrocarbon compound in the presence of a catalyst, the catalyst being a solid composition containing at least one component containing chromium oxyfluoride or fluoride of empirical formula CrxM(1-x)OrFs, where
The process according to claim 6, in which the fluorine content of the hydrocarbon compound is increased by reacting the hydrocarbon compound with hydrogen fluoride in the gas phase in the presence of the solid composition, the hydrocarbon compound being a saturated halogenated hydrocarbon or an unsaturated halogenated hydrocarbon or an unsaturated hydrocarbon.
A solid composition comprising a component containing chromium oxyfluoride or fluoride of empirical formula CrxM(1-x)OrFs, where 2r+s is greater than or equal to 2.9 and less than 6, M is a metal chosen from columns 2 to 12 of the Periodic Table of the Elements, x has a value from 0.9 to 1, s is greater than 0 and less than or equal to 6 and r is greater than or equal to 0 and less than 3, the solid catalyst composition having a crystallinity of less than 20% by weight.
Dependencies are inferred from the claim text.