Hydroconversion processes employing multi-metallic catalysts and method for making thereof
AssigneeChevron U.S.A. Inc.
InventorsTheodorus Ludovicus Michael Maesen, Alexander E. Kuperman
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Abstract
A process for upgrading a hydrocarbon feedstock by hydroprocessing using multi-metallic catalysts is disclosed. In one aspect, the invention relates to hydroprocessing of a hydrocarbon feedstock using a catalyst derived from a catalyst precursor of the formula Av[(MP)(OH)x(L)ny]z(MVIBO4), wherein A comprises an alkali metal cation, an ammonium, an organic ammonium or a phosphonium cation, MP is selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, L is an organic, oxygen-containing ligand, MVIB is at least one of Group VIB metals, and the atomic ratio of MVIII:MVIB is between 100:1 and 1:100.
Claims20
A process for hydroprocessing a hydrocarbon feedstock which comprises contacting the feedstock with an unsupported catalyst under hydroprocessing conditions, wherein the catalyst is prepared by drying at a temperature of 200° C. or less, then sulfidizing an unsupported charge-neutral hydroxide catalyst precursor composition of the formula:
- Av[(MP)(OH)x(L)ny]z(MVIBO4),
- wherein
- A is at least one of an alkali metal cation, an ammonium, an organic ammonium and a phosphonium cation,
- MP is at least one of a Group VIII metal, Group IIB metal, Group IIA metal, Group IVA metal and combinations thereof, P is oxidation state with MP having an oxidation state of +2 or +4 depending on the selection of MP,
- MVIB is at least a Group VIB metal having an oxidation state of +6,
- L is at least one oxygen-containing ligands, and L has a neutral or negative charge n<=0;
- MP:MVIB has an atomic ratio between 100:1 and 1:100;
- v−2+P*z−x*z+n*y*z=0;
- and
- 0<y≦−P/n;
- 0<x≦P;
- 0<v≦2;
- 0<z;
- wherein the hydroxide catalyst precursor has an X-ray diffraction pattern which is amorphous with broad peaks or an X-ray diffraction pattern with at least a crystalline peak at Bragg angle between 52.7° to 53.2° theta.
A process for hydroprocessing a hydrocarbon feedstock which comprises a first hydroprocessing stage and a second hydroprocessing stage, wherein the first and second stages employ different catalysts, and wherein at least one of the catalysts is an unsupported catalyst prepared by drying at a temperature of 200° C. or less, then sulfidizing an unsupported charge-neutral catalyst precursor composition of the formula:
- Av[(MP)(OH)x(L)ny]z(MVIBO4),
- wherein
- A is at least one of an alkali metal cation, an ammonium, an organic ammonium and a phosphonium cation,
- MP is selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, P is oxidation state with MP having an oxidation state of +2 or +4 depending on the selection of MP,
- MVIB is at least a Group VIB metal having an oxidation state of +6,
- L is one or more oxygen-containing ligands, and L has a neutral or negative charge n<=0;
- MP:MVIB has an atomic ratio between 100:1 and 1:100;
- v−2+P*z−x*z+n*y*z=0;
- and
- 0<y≦−P/n;
- 0<x≦P;
- 0<v≦2;
- 0<z;
- wherein the hydroxide catalyst precursor has an X-ray diffraction pattern which is amorphous with broad peaks or an X-ray diffraction pattern with at least a crystalline peak at Bragg angle between 52.7° to 53.2° theta.
Dependencies are inferred from the claim text.