Hydroconversion multi-metallic catalysts and method for making thereof
First Claim
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1. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum (Mo) sulfide, tungsten (W) sulfide, and nickel (Ni) sulfide;
- wherein the catalyst has a BET surface area of at least 20 m2/g and a pore volume of at least 0.05 cm3/g; and
wherein the catalyst is characterized by a Ni surface concentration/Ni bulk concentration ratio of greater than 0.4 as characterized by XPS.
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Abstract
The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The MMS catalyst is characterized as having a BET surface area of at least 20 m2/g and a pore volume of at least 0.05 cm3/g. In one embodiment, the MMS catalyst is also characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase.
184 Citations
28 Claims
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1. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum (Mo) sulfide, tungsten (W) sulfide, and nickel (Ni) sulfide;
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wherein the catalyst has a BET surface area of at least 20 m2/g and a pore volume of at least 0.05 cm3/g; and wherein the catalyst is characterized by a Ni surface concentration/Ni bulk concentration ratio of greater than 0.4 as characterized by XPS. - View Dependent Claims (2, 3, 4)
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5. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum (Mo) sulfide, tungsten (W) sulfide, and nickel (Ni) sulfide;
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wherein the catalyst has a BET surface area of at least 20 m2/g and a pore volume of at least 0.05 cm3/g; and wherein the catalyst is characterized by a W surface concentration/W bulk concentration ratio of greater than 0.3 as characterized by XPS. - View Dependent Claims (6, 7, 8)
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9. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum (Mo) sulfide, tungsten (W) sulfide, and nickel (Ni) sulfide;
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wherein the catalyst has a BET surface area of at least 20 m2/g and a pore volume of at least 0.05 cm3/g; and wherein the catalyst is characterized as having molar ratios of metal components Ni;
Mo;
W in a region defined by five points ABCDE of a ternary phase diagram, and wherein the five points ABCDE are defined as;
A;
Ni=0.80, Mo=0.00, W=0.20, B;
Ni=0.25, Mo=0.00, W=0.75, C;
Ni=0.25, Mo=0.25, W=0.50, D;
Ni=0.63, Mo=0.25, W=0.12, E;
Ni=0.80, Mo=0.08, W=0.12. - View Dependent Claims (10, 11, 12)
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13. A self-supported mixed metal sulfide (MMS) catalyst comprising molybdenum (Mo) sulfide, tungsten (W) sulfide, and nickel (Ni) sulfide;
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wherein the catalyst has a BET surface area of at least 20 m2/g and a pore volume of at least 0.05 cm3/g; wherein the catalyst is characterized by a multi-phased structure comprising five phases;
a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase; andwherein the molybdenum tungsten sulfide phase envelopes slabs of Ni9S8 and Ni3S2. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification