Patent ID: 7736492

Claim:
A process comprising selectively hydrogenating a gasoline containing polyunsaturated compounds and saturated light sulphur-containing compounds, whereby the polyunsaturated compounds are hydrogenated into mono-unsaturated compounds and whereby, jointly, the saturated light sulphur-containing compounds are transformed into heavier compounds by reaction with the unsaturated compounds contained in the gasoline, wherein the reactions are conducted in contact with a catalyst comprising one or more metals from group VIB including at least molybdenum, and at least one non-noble metal from group VIII including at least nickel, deposited on a catalyst support comprising a metal aluminate of the formula MAl 2 O 4 in which the metal M is at least one of nickel and cobalt and such that the quantity of metal M which interacts strongly with the support is in the range 0.5% to 10% by weight of oxide equivalent, and in which: the amount, by weight of oxide, of the group VIB metal(s) is greater than 12% by weight with respect to the total catalyst weight; the amount, by weight of oxide, of the group VIII metal(s) is less than 15% by weight with respect to the total catalyst weight; the metals in said catalyst have a degree of sulphurization of at least 60%; the volume of pores with a diameter of more than 0.05 microns in the catalyst is in the range 10% to 40% of the total pore volume of the catalyst; and the mole ratio between the non-noble group VIII nickel metal and the group VIB molybdenum metal, Ni/Mo, is in the range of 0.25 to 0.45 mol/mol.