| abstract |
The present invention relates to a method for modifying the fluorine distribution in hydrocarbon compounds in the presence of a catalyst, characterized in that the use of a chromium oxyfluoride or chromium fluoride containing at least one compound having the formula CrxM (1-x ) OrFs A solid composition of components as a catalyst, wherein 2r+s is greater than or equal to 2.9 and less than 6, M is a metal selected from columns 2 to 12 of the Periodic Table of the Elements, x is 0.9 to 1, and s is greater than 0 and less than or Equal to 6 and r greater than or equal to 0 and less than 3, the crystallinity of the solid composition is less than 20% by weight. The present invention also relates to the solid composition itself. |