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Details for Patent: 4,376,699

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Details for Patent: 4,376,699

Title: Catalytic hydrocracking, hydrodesulfurization, and/or hydrodenitrogenation of organic compounds employing promoted zinc titanate and a zeolite as the catalytic agent
Abstract:The catalytic hydrocracking, hydrodesulfurization, and/or hydrodenitrogenation of organic compounds is carried out in the presence of a catalyst composition comprising zeolite, zinc, titanium, and at least one promoter selected from the group consisting of vanadium, chromium, cobalt, nickel, molybdenum, tungsten, rhenium, platinum, palladium, rhodium, ruthenium and compounds thereof.
Inventor(s): Gardner; Lloyd E. (Bartlesville, OK)
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Filing Date:Jan 18, 1982
Application Number:06/340,150
Claims:1. A process for the catalytic hydrodesulfurization of an organic sulfur compound comprising the step of contacting said organic sulfur compound under suitable hydrodesulfurization conditions with a catalyst composition comprising zeolite, zinc, titanium, and at least one promoter selected from the group consisting of vanadium, chromium, cobalt, nickel, molybdenum, tungsten, rhenium, platinum, palladium, rhodium, ruthenium, and compounds thereof.

2. A process in accordance with claim 1 wherein said organic sulfur compound is selected from the group comprising sulfides, disulfides, mercaptans, thiophenes, benzothiophenes, dibenzothiophenes and mixtures of any two or more thereof.

3. A process in accordance with claim 1 wherein said zinc and titanium are present in said catalyst composition in the form of zinc titanate prepared by calcining a mixture of zinc oxide and titanium dioxide in the presence of molecular oxygen at a temperature in the range of about 650.degree. C. to about 1050.degree. C.

4. A process in accordance with claim 3 wherein the atomic ratio of zinc to titanium in said catalyst composition is in the range of about 1:1 to about 3:1.

5. A process in accordance with claim 3 wherein the atomic ratio of zinc to titanium in said catalyst composition is in the range of about 1.8:1 to about 2.2:1.

6. A process in accordance with claim 1 wherein the concentration of said zeolite is in the range of about 1 to about 60 weight percent based on the weight of said catalyst composition.

7. A process in accordance with claim 1 wherein the concentration of said zeolite is in the range of about 10 to about 40 weight percent based on the weight of said catalyst composition.

8. A process in accordance with claim 1 wherein said zeolite is a Y-type zeolite having a sodium content not greater than about 0.5 weight percent.

9. A process in accordance with claim 1 wherein said zeolite is a Y-type zeolite having a sodium content not greater than about 0.2 weight percent.

10. A process in accordance with claim 1 wherein the concentration of vanadium, chromium, cobalt, nickel, molybdenum, or tungsten as individual promoters, expressed as an element, if present, is in the range of about 0.1 to about 16 weight percent based on the weight of said catalyst composition and the concentration of rhenium, palladium, rhodium, ruthenium or platinum as individual promoters, expressed as the element, if present, is in the range of about 0.2 to about 1.6 weight percent based on the weight of said catalyst composition.

11. A process in accordance with claim 10 wherein the total concentration of any combination of the group from which said at least one promoter is selected, expressed as an element, is in the range of about 0.1 to about 24 weight percent based on the weight of said catalyst composition.

12. A process in accordance with claim 11 wherein said catalyst composition has been calcined in the presence of molecular oxygen at a temperature in the range of about 500.degree. C. to about 650.degree. C.

13. A process in accordance with claim 1 wherein said at least one promoter is cobalt and molybdenum.

14. A process in accordance with claim 13 wherein the cobalt:molybdenum atomic ratio in said catalyst composition is in the range of about 0.6:1 to about 0.8:1.

15. A process in accordance with claim 1 wherein said organic sulfur compound is contained in a fluid feed stream.

16. A process in accordance with claim 15 wherein said suitable hydrodesulfurization conditions comprise a temperature in the range of about 260.degree. C. to about 482.degree. C., a total system pressure in the range of about 200 psig to about 2500 psig, a hydrogen flow rate in the range of about 100 SCF/bbl to about 10,000 SCF/bbl and a residence time for said fluid feed stream in the presence of said catalyst composition in the range of about 0.1 to about 10 liquid volumes of said fluid feed stream per volume of said catalyst composition per hour.

17. A process in accordance with claim 15 wherein said suitable hydrodesulfurization conditions comprise a temperature in the range of about 316.degree. C. to about 399.degree. C., a total system pressure in the range of about 500 psig to about 1500 psig, a hydrogen flow rate in the range of about 500 SCF/bbl to about 3,000 SCF/bbl and a residence time for said fluid feed stream in the presence of said catalyst composition in the range of about 0.5 to about 3 liquid volumes of said fluid feed stream per volume of said catalyst composition per hour.

18. A process in accordance with claim 1 wherein said catalyst composition is completely sulfided.
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