# US 6,296,759 B1 · Process for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur containment containing feedstock > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,296,759 B1 - Document ID: US6296759B1 - Status: Granted - Kind: B1 - Application number: 09/367,095 - Filed: 1999-11-05 - Granted: 2001-10-02 - Earliest claimed: 1997-02-13 - Assignees: Engelhard Corporation - Inventors: Marinus Vaarkamp; Bernard Hendrik Reesink; Pieter Hildegardus Berben - Web page: https://patentgrep.com/patent/US6296759B1 ## CPC - B01J 23/40: of the platinum group metals - C10G 45/10: containing platinum group metals or compounds thereof - C10G 45/52: containing platinum group metals or compounds thereof - C10G 45/62: containing platinum group metals or compounds thereof - B01J 21/12: Silica and alumina - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES ## Abstract The invention concems a process for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur contaminant containing hydrocarbon feedstock, wherein the feedstock is contacted in the presence of hydrogen gas with a catalyst, which catalyst comprises platinum, palladium or a combination thereof on a non-crystalline, acidic silica-alumina support, which support is obtained by sol-gel techniques and wherein the ratio of Si to Al is from 1:10 to 200:1. ## Claims ### Claim 1 A process for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur contaminant containing hydrocarbon feedstock, wherein the feedstock is contacted in the presence of hydrogen gas with a catalyst having a dispersion degree of at least 0.3, at temperatures in the range of from 50 to 350° C., which catalyst comprises platinum, palladium or a combination thereof on a non-crystalline, acidic silica alumina support, which support has been obtained by a sol-gel technique comprising the dropwise addition of an aqueous sol of inorganic salts of aluminum and silicon through an oil-phase to an alkaline water phase, and wherein the ratio of Si to Al is from 1:20 to 200:1. ### Claim 2 (depends on 1) The process of claim 1, wherein the catalyst has an acidi ratio of between 3:1 and 1:10. ### Claim 3 (depends on 1) The process of claim 1, wherein the catalyst comprises platinum, palladium or a combination thereof in an amount of from 0.01 to 5 weight percent, based on the weight of the catalyst. ### Claim 4 (depends on 1) The process of claim 1, wherein the catalyst. comprises platinum and palladium. ### Claim 5 (depends on 2) The process of claim 2, wherein the catalyst comprises platinum and palladium in an atomic ratio of 10:1 to 1:10. ### Claim 6 (depends on 1) The process of claim 1, wherein a feedstock having a sulfur contaminant content of from 0.1 to 500 ppm calculated as sulfur, based on the weight of the feedstock, is hydrogenated and/or hydrodesulfurized. ### Claim 7 (depends on 1) The process of claim 1, wherein the hydrocarbon feedstock contains thiophenic sulfur contaminants. ### Claim 8 (depends on 1) The process of claim 1, wherein the sulfur contaminant containing hydrocarbon feedstock is selected from the group consisting of white oils, solvents, diesels or middle distillates, gasoline, resins and kerosine. ### Claim 9 (depends on 1) The process of claim 1, wherein the feedstock is a product from an upstream hydrodesulfurization unit. ### Claim 10 (depends on 1) The process of claim 1, wherein the feedstock is contacted with the catalyst under a hydrogen pressure of from 0.5 to 300 bar. ### Claim 11 A catalyst for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur contaminant containing feedstock, which catalyst is based on platinum, palladium or combination thereof on a non-crystalline, acidic silica-alumina support, which support has been obtained by a sol-gel technique and has a surface area of from 25 to 700 m2/g, wherein the catalyst has a dispersion degree of at least 0.3 and wherein the ratio of Si to Al is from 1:10 to 200:1. ### Claim 12 (depends on 1) The process of claim 1, wherein the catalyst comprises platinum, palladium or a combination thereof in an amount of from 0.1 to 2 weight percent, based on the weight of the catalyst. ### Claim 13 A process for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur contaminant containing hydrocarbon feedstock, wherein the feedstock is contacted in the presence of hydrogen gas with a catalyst having a dispersion degree of at least 0.3, at temperatures in the range of from 50 to 350° C., which catalyst comprises platinum, palladium or a combination thereof on a non-crystalline, acidic silica alumina support having two acidic sites, which support is obtained by a sol-gel technique comprising the dropwise addition of an aqueous sol of inorganic salts of aluminum and silicon through an oil-phase to an alkaline water phase, and wherein the ratio of Si and Al is from 1:20 to 200:1. ### Claim 14 (depends on 13) The process of claim 13, wherein a first acidic site of the non-crystalline support has an ammonia heat of adsorption of between 43 and 48 kJ/mol. ### Claim 15 (depends on 14) The process of claim 14, wherein a second acidic site of the non-crystalline support has an ammonia heat of adsorption of about 40 kJ/mol, and the ratio of the first acidic site to the second acidic site is between 3:1 and 1:10. ### Claim 16 (depends on 11) The catalyst of claim 11, wherein the sol-gel technique comprised the dropwise addition of an aqueous sol of inorganic salts of aluminum and silicon through an oil-phase to an alkaline water phase. ### Claim 17 (depends on 1) The process of claim 1, wherein the support has a surface area of from 25 to 700 m2/g. ### Claim 18 (depends on 1) The process of claim 1, wherein the support has a surface area of from 200 to 500 m2/g.