Hydroconversion multi-metallic catalysts and method for making thereof
First Claim
1. A process for making a self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum sulfide, nickel sulfide, and tungsten sulfide, the process comprising:
- mixing a sufficient amount of a nickel (Ni) metal precursor, a sufficient amount of a molybdenum (Mo) metal precursor, and a sufficient amount of a tungsten (W) metal precursor to produce a catalyst precursor having a molar ratio of metal components Ni;
Mo;
W in relative proportions defined by a region of a ternary phase diagram showing transition metal elemental composition in terms of nickel, molybdenum, and tungsten mol-%, wherein the region is defined by five points ABCDE and wherein the five points are;
A in which Ni=0.72, Mo=0.00, W=0.28;
B in which Ni=0.55, Mo=0.00, W=0.45;
C in which Ni=0.48, Mo=0.14, W=0.38;
D in which Ni=0.48, Mo=0.20, W=0.33; and
E in which Ni=0.62, Mo=0.14, W=0.24; and
sulfiding the catalyst precursor under conditions sufficient to convert the catalyst precursor into a sulfide catalyst.
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Abstract
The invention relates to a method for preparing a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock. The method comprises mixing a sufficient amount of a nickel (Ni) metal precursor, a sufficient amount of a molybdenum (Mo) metal precursor, and a sufficient amount of a tungsten (W) metal precursor to produce a catalyst precursor having a molar ratio Ni:Mo:W in relative proportions defined by a region of a ternary phase diagram showing transition metal elemental composition in terms of nickel, molybdenum, and tungsten mol-%, wherein the region is defined by five points ABCDE and wherein the five points are: A (Ni=0.72, Mo=0.00, W=0.28), B (Ni=0.55, Mo=0.00, W=0.45), C (Ni=0.48, Mo=0.14, W=0.38), D (Ni=0.48, Mo=0.20, W=0.33), E (Ni=0.62, Mo=0.14, W=0.24); and sulfiding the catalyst precursor under conditions sufficient to convert the catalyst precursor into a sulfide catalyst.
184 Citations
19 Claims
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1. A process for making a self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum sulfide, nickel sulfide, and tungsten sulfide, the process comprising:
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mixing a sufficient amount of a nickel (Ni) metal precursor, a sufficient amount of a molybdenum (Mo) metal precursor, and a sufficient amount of a tungsten (W) metal precursor to produce a catalyst precursor having a molar ratio of metal components Ni;
Mo;
W in relative proportions defined by a region of a ternary phase diagram showing transition metal elemental composition in terms of nickel, molybdenum, and tungsten mol-%, wherein the region is defined by five points ABCDE and wherein the five points are;
A in which Ni=0.72, Mo=0.00, W=0.28;
B in which Ni=0.55, Mo=0.00, W=0.45;
C in which Ni=0.48, Mo=0.14, W=0.38;
D in which Ni=0.48, Mo=0.20, W=0.33; and
E in which Ni=0.62, Mo=0.14, W=0.24; andsulfiding the catalyst precursor under conditions sufficient to convert the catalyst precursor into a sulfide catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification