Tetrametallic bulk hydroprocessing catalysts
AssigneeChevron U.S.A. Inc.
InventorsXiaoying Ouyang, Viorel Duma, Alexander Kuperman, Ibrahim Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait, Charles Wilson
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Abstract
Bulk catalysts comprised of nickel, molybdenum, tungsten and titanium and methods for synthesizing bulk catalysts are provided. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.
Claims26
A process for hydroprocessing a hydrocarbon feedstock, the process comprising contacting the hydrocarbon feedstock with hydrogen in the presence of a bulk catalyst at hydroprocessing conditions to give at least one product, wherein the bulk catalyst is prepared by sulfiding a bulk catalyst precursor having a formula of:
- Av[Ni(OH)x(L)py]z[MomW1-mO4][Ti(OH)nO2-n/2]w
- wherein:
- (i) A is an alkali metal cation, a rare earth metal cation, an ammonium cation, an organic ammonium cation, phosphonium cation, or a combination thereof;
- (ii) L is an organic compound-based component;
- and
- (iii) 0≤y≤−2/p;
- 0≤x<2;
- 0≤v<2;
- 0<z;
- 0<m<1;
- 0<n<4;
- 0.1<w/(z+1)<10;
- wherein the bulk catalyst precursor is defined by a region of a quaternary phase diagram wherein the region is defined by ten points ABCDEFGHIJ and wherein the ten points, on a metal oxide basis (wt. %), are:
- A (Ni=39, Mo=1, W=41, Ti=20), B (Ni=39, Mo=1, W=72, Ti=20), C (Ni=9, Mo=17, W=54, Ti=20), D (Ni=31, Mo=25, W=24, Ti=20), E (Ni=40, Mo=14, W=26, Ti=20), F (Ni=34, Mo=1, W=36, Ti=30), G (Ni=7, Mo=1, W=63, Ti=30), H (Ni=8, Mo=15, W=48, Ti=30), I (Ni=27, Mo=22, W=21, Ti=30), and J (Ni=35, Mo=12, W=23, Ti=30).
A process for hydroprocessing a hydrocarbon feedstock, the process comprising contacting the hydrocarbon feedstock with hydrogen in the presence of a bulk catalyst at hydroprocessing conditions to give at least one product, wherein the bulk catalyst is prepared by sulfiding a bulk catalyst precursor having a formula of:
- Av[Ni(OH)x(L)py]z[MomW1-mO4][Ti(OH)nO2-n/2]w
- wherein:
- (i) A is an alkali metal cation, a rare earth metal cation, an ammonium cation, an organic ammonium cation, phosphonium cation, or a combination thereof;
- (ii) L is an organic compound-based component;
- and
- (iii) 0≤y≤−2/p;
- 0≤x<2;
- 0≤v<2;
- 0<z;
- 0<m<1;
- 0<n<4;
- 0.1<w/(z+1)<10;
- wherein the bulk catalyst precursor is defined by a region of a quaternary phase diagram defined by eight points ABCDEFGH and wherein the eight points, on a metal oxide basis (wt. %), are:
- A (Ni=52.5, Mo=3.5, W=14, Ti=30), B (Ni=38.5, Mo=17.5, W=14, Ti=30), C (Ni=21, Mo=17.5, W=31.5, Ti=30), D (Ni=35, Mo=3.5, W=31.5, Ti=30), E (Ni=60, Mo=4, W=16, Ti=20), F (Ni=44, Mo=20, W=16, Ti=20), G (Ni=24, Mo=20, W=36, Ti=20), and H (Ni=40, Mo=4, W=36, Ti=20).
Dependencies are inferred from the claim text.