A bulk metal oxide catalyst composition of the general formula (X)b(M)c(Z)d(O)e (I) wherein X represents at least one non-noble Group VIII metal;M represents at least one non-noble Group VIb metal;Z represents one or more elements selected from aluminum, silicon, magnesium, titanium, zirconium, bor
A bulk metal oxide catalyst composition of the general formula (X)b(M)c(Z)d(O)e (I) wherein X represents at least one non-noble Group VIII metal;M represents at least one non-noble Group VIb metal;Z represents one or more elements selected from aluminum, silicon, magnesium, titanium, zirconium, boron, and zinc;one of b and c is the integer 1; andd and e and the other of b and c each are a number greater than 0 such that the molar ratio of b:c is in the range of from 0.5:1 to 5:1, the molar ratio of d:c is in the range of from 0.2:1 to 50:1, and the molar ratio of e:c is in the range of from 3.7:1 to 108:1; is prepared by controlled (co)precipitation of component metal compounds, refractory oxide material, and alkali compound in protic liquid. Resulting compositions find use in hydrotreatment processes involving particularly hydrodesulphurization and hydrodenitrification.
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1. A method of making a composition, said method consisting of: mixing a non-noble Group VIII metal compound, wherein the non-noble Group VIII metal is either nickel or cobalt, or both, a Group VIB metal compound, wherein the Group VIB metal is molybdenum, a refractory oxide material, wherein the re
1. A method of making a composition, said method consisting of: mixing a non-noble Group VIII metal compound, wherein the non-noble Group VIII metal is either nickel or cobalt, or both, a Group VIB metal compound, wherein the Group VIB metal is molybdenum, a refractory oxide material, wherein the refractory oxide material is either alumina or silica, or both, and an alkali compound, wherein said alkali compound is selected from the group consisting of hydroxides, silicates, and carbonates, in a protic liquid to form a mixture in which said mixture at least one of the metal compounds is partly in solid state and partly in dissolved state; subjecting said mixture to coprecipitation conditions to form a coprecipitate solid; and heating said coprecipitate solid at an elevated temperature so as to yield said composition. 2. A method as recited in claim 1, wherein said protic liquid comprises water, and said non-noble Group VIII metal compound is a nickel compound that stays in the partly solid phase in said protic liquid. 3. A method as recited in claim 2, wherein said coprecipitation conditions include maintaining said mixture at a coprecipitation temperature in the range of from 25 to 95° C. for a period of time in the range of from 10 minutes to 2 hours, and wherein said mixture includes an alkali concentration in the range of from 0.5 mol per mol of the non-noble Group VIII metal and Group VIB metal, on an oxide basis, to 50 mol per mol of the non-noble Group VIII metal and Group VIB metal, on an oxide basis. 4. A method as recited in claim 3, wherein said elevated temperature is in the range of from 100° C. to 600° C. 5. A method as recited in claim 4, wherein said alkali compound is ammonia or a material that will generate ammonium ions in the protic liquid of said mixture. 6. A method as recited in claim 5, wherein said composition having the general formula, on an oxide basis, (X)b(M)c(Z)d(O)e (I) wherein X represents at least one non-noble Group VIII metal;M represents a Group VIB metal;Z represents one or more elements selected from the group consisting of aluminum, and silicon;O represents oxygen;one of b and c is the integer 1; andd, e, and the other of b and c each are a number greater than 0 such that the molar ratio of b:c is in the range of from 0.5:1 to 5:1, the molar ratio of d:c is in the range of from 0.1:1 to 50:1, and the molar ratio of e:c is in the range of from 3.6:1 to 108:1. 7. A method as recited in claim 6, wherein said composition is XRD-amorphous. 8. A method as recited in claim 7, wherein said composition has an XRD diffraction pattern in which above 2θ=15°, there is a local maximum having a characteristic full width at a half maximum above 2.5° at each of a 2θ value in the range of from 25.5° to 28.0°; a 2θ value in the range of from 33.6° to 34.6°; and a 2θ value in the range of from 59.8° to 62.2°, and there is no reflection or local maximum having a characteristic full width at half maximum of 2.5° or below. 9. A method as recited in claim 4, wherein said elevated temperature is in the range of from 120° C. to 400° C. 10. A method as recited in claim 1, wherein the alkali metal compound is added to a slurry of partly dissolved non-noble Group VIII metal compound, Group VIB metal compound and refractory oxide material. 11. A method as recited in claim 10, wherein the initial slurry concentration is in the range from 2 to 40 wt % nominal solids. 12. A method as recited in claim 11, wherein the initial slurry concentration is in the range from 5 to 20wt % nominal solids. 13. A method as recited in claim 1, wherein the non-noble Group VIII metal compound is nickel carbonate, the Group VIB metal compound is molybdenum oxide, and the refractory oxide material is amorphous alumina. 14. A method as recited in claim 1, wherein the non-noble Group VIII metal compound is nickel carbonate, the Group VIB metal compound is ammonium molybdate, and the refractory oxide material is silica.
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이 특허에 인용된 특허 (14)
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