Patent ID: 8394262

Claim:
A catalyst comprising at least one metal from group VIB, at least two metals from group VIII one of which is termed the major promoter VIII-1 and the other or others being termed co-promoters VIII-i, where i is in the range of 2 to 5, and at least one support constituted by a porous refractory oxide, in which the elements from group VIII are present in proportions defined by the atomic ratio [VIII- 1/(VIII-1+...+VIII-i)], said ratio being in the range of 0.5 to 0.85, and wherein said catalyst comprises a quantity of metal or metals from group VIB in the range of 2% to 9% by weight of trioxide of the metal or metals from group VIB with respect to the total catalyst mass, and the sum of the quantities of metals from group VIII is in the range 0.3% to 2% by weight of oxide of the metals from group VIII with respect to the total catalyst mass.