Catalyst composition preparation and use
First Claim
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1. A process for the preparation of a catalyst composition having the general formula, on an oxide basis,
(X)b(M)c(Z)d(O)e
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(I)whereinX represents at least one non-noble Group VIII metal;
M represents at least one Group VIB metal;
Z represents one or more elements selected from the group consisting of aluminum, silicon, magnesium, titanium, zirconium, boron and zinc;
O represents oxygen;
one of b and c is the integer 1; and
d, 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;
said process comprises heating a composition of the general formula
(NH4)a(X)b(M)c(Z)d(O)e
(II)in which a is a number greater than 0 and X, M, Z, O, b, c, d and e are as defined above, at a temperature in the range of from 100 to 600°
C.,wherein the composition of general formula II is in the form of, or is recovered from, a slurry optionally after ageing at a temperature in the range of from 20 to 95°
C. for a minimum of 10 minutes, said slurry being obtained by coprecipitating, at a temperature and for a time sufficient to produce the composition II, at least one non-noble Group VIII metal compound, at least one Group VIB metal compound, at least one refractory oxide material and an alkali compound, in a protic liquid, at least one of the metal compounds being partly in solid state and partly in dissolved state.
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Abstract
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; and
- d 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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Citations
8 Claims
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1. A process for the preparation of a catalyst 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 at least one Group VIB metal; Z represents one or more elements selected from the group consisting of aluminum, silicon, magnesium, titanium, zirconium, boron and zinc; O represents oxygen; one of b and c is the integer 1; and d, 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;said process comprises heating a composition of the general formula
(NH4)a(X)b(M)c(Z)d(O)e
(II)in which a is a number greater than 0 and X, M, Z, O, b, c, d and e are as defined above, at a temperature in the range of from 100 to 600°
C.,wherein the composition of general formula II is in the form of, or is recovered from, a slurry optionally after ageing at a temperature in the range of from 20 to 95°
C. for a minimum of 10 minutes, said slurry being obtained by coprecipitating, at a temperature and for a time sufficient to produce the composition II, at least one non-noble Group VIII metal compound, at least one Group VIB metal compound, at least one refractory oxide material and an alkali compound, in a protic liquid, at least one of the metal compounds being partly in solid state and partly in dissolved state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification