Catalyst based on an organic-inorganic hybrid support and its use in hydrorefining and hydroconversion

Supported catalyst, the said catalyst comprising:

• a porous support constituted by an organic-inorganic hybrid material (OIHM), the said OIHM having a covalent bond between the organic and inorganic phases, the said bond conforming to the formula M-O—Z—R where M represents at least one metal constituting the inorganic phase, Z at least one heteroelement from phosphorus and silicon from one or more organic precursor(s) and R an organic fragment of alkyl, aryl, alkoxy, aryl-alkyl type, saturated or not, branched or not, and bearing or not one or more organic functional groups,
• at least one metal of group VIB and/or of group VB and/or of group VIII, the metal of group VIB being chosen from chromium, molybdenum and tungsten, the metal of group VB from vanadium, niobium and the metal of group VIII from iron, cobalt, nickel, ruthenium, palladium, osmium, iridium and platinum,
• and the catalyst with the active sulphide phase being obtained by sulphurization of the oxide phases.