| abstract |
The invention relates to a process for preparing a hydroprocessing catalyst comprising the following steps: a) at least one step of impregnating a calcined and/or dried catalytic precursor containing at least one element of group VIII and/or at least one element of group VIB and an amorphous support, with an impregnating solution constituted of at least one phosphorus compound in solution in at least one polar solvent having a dielectric constant of greater than 20, b) a step of maturing said impregnated catalytic precursor derived from step a), and c) a step of drying, without a subsequent calcination step, said catalytic precursor derived from step b). |