Abstract: Inorganic material having at least two elementary spherical particles, each of said spherical metallic particles: a polyoxometallate with formula (XxMmOyHh)q?, where H is hydrogen, O is oxygen, X is phosphorus, silicon, boron, nickel or cobalt and M is one or more vanadium, niobium, tantalum, molybdenum, tungsten, iron, copper, zinc, cobalt and nickel, x is 0, 1, 2 or 4, m is 5, 6, 7, 8, 9, 10, 11, 12 or 18, y is 17 to 72, h is 0 to 12 and q is 1 to 20.

Abstract: A process for the hydrocracking a hydrocarbon-containing feedstock in which at least 50% by weight of the compounds have an initial boiling point above 340° C. and a final boiling point below 540° C., using a catalyst having, in its oxide form, at least one metal selected from the metals of groups VIB, VIII and VB, said metals being present in the form of at least one polyoxometallate of formula (HhXxMmOy)q?, said polyoxometallates being present within a mesostructured matrix based on oxide of at least one element Y, said matrix having a pore size between 1.5 and 50 nm and having amorphous walls of thickness between 1 and 30 nm, said catalyst being sulphurized before used in said process.

Abstract: Hydrocracking a hydrocarbon feed in the presence of a catalyst comprising an acidic support and an active phase formed from at least one metal from group VIII and at least one metal from group VIB, said catalyst being prepared using a process comprising, in succession: contacting a pre-catalyst comprising said metal from group VIII, said metal from group VIB and said acidic support with a cyclic oligosaccharide of at least 6?-(1,4)-bonded glucopyranose subunits; contacting the acidic support with a solution containing a precursor of metal from group VIII, a precursor of said metal from group VIB and a cyclic oligosaccharide of at least 6?-(1,4)-bonded glucopyranose subunits; and contacting acidic support with a cyclic oligosaccharide of at least 6?-(1,4)-bonded glucopyranose subunits followed by a second contacting acidic solid with a precursor of metal from group VIII and a precursor of metal from group VIB; drying; heat treatment; sulphurization.

Abstract: The invention describes a heteropolycompound constituted by a nickel salt of a lacunary Keggin type heteropolyanion comprising tungsten in its structure, with formula: Nix+y/2AW11-yO39-5/2y,zH2O wherein Ni is nickel, A is selected from phosphorus, silicon and boron, W is tungsten, O is oxygen, y=0 or 2, x=3.5 if A is phosphorus, x=4 if A is silicon, x=4.5 if A is boron, and x=m/2+2 for the rest, and z is a number in the range 0 to 36, in which said heteropolycompound has no nickel atom in substitution for a tungsten atom in its structure, said nickel atoms being placed in the counter-ion position in the structure of said compound.

Abstract: The present invention concerns a catalyst comprising at least one crystalline material comprising silicon with a hierarchical and organized porosity and at least one hydrodehydrogenating element selected from the group formed by elements from group VIB and/or group VIII of the periodic table of the elements. Said crystalline material comprising silicon with a hierarchical and organized porosity is constituted by at least two spherical elementary particles, each of said particles comprising a matrix based on oxide of silicon, which is mesostructured, with a mesopore diameter in the range 1.5 to 30 nm and having microporous and crystalline walls with a thickness in the range 1.5 to 60 nm, said elementary spherical particles having a maximum diameter of 200 microns. The invention also concerns hydrocracking/hydroconversion and hydrotreatment processes employing said catalyst.

Abstract: The present invention concerns a catalyst comprising at least one amorphous material comprising silicon with a hierarchical and organized porosity and at least one hydrodehydrogenating element selected from the group formed by elements from group VIB and/or group VIII of the periodic table of the elements. Said amorphous material comprising silicon with a hierarchical and organized porosity is constituted by at least two spherical elementary particles, each of said spherical particles comprising a matrix based on oxide of silicon, which is mesostructured, with a mesopore diameter in the range 1.5 to 30 nm and having amorphous and microporous walls with a thickness in the range 1.5 to 50 nm, said elementary spherical particles having a maximum diameter of 200 microns. The invention also concerns hydrocracking/hydroconversion and hydrotreatment processes employing said catalyst.