Process for the fluoriding of a catalyst

Claim 1

A process for the fluoriding of a catalyst with an organic fluorine compound in a liquid distillate hydrocarbon in the presence of hydrogen wherein a fixed bed of catalyst particles is fluorided in-situ at a temperature of 100°-400° C., a pressure of 5-200 bar, a space velocity of 0.5-5 liters of stream of liquid distillate hydrocarbon per liter of catalyst per hour and a hydrogen/said stream of liquid ratio of 200-2000 Nl/L with the use of a constant or variable fluorine slip through the catalyst bed combined or not combined with a positive temperature gradient over the bed, provided that (a) the average fluorine slip (S A ) amounts to at least 10%w, (b) the temperature gradient (G) amounts to at most 30° C., (c) the products of S A (in %w) and G (in °C.) amounts to at most 1000, (d) a constant fluorine slip which on average amounts to less than 40%w is accompanied by a temperature gradient of at least 300/S A , (e) a constant fluorine slip which on average amounts to at least 40%w but less than 50%w is accompanied by a temperature gradient of at least 3/4 (50-S A ) and (f) 0.5-15 parts by weight of fluorine per 100 parts by weight of carrier are applied to the catalyst.