# US 12,758,953 B2 · Hydroisomerization catalysts > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,758,953 B2 - Document ID: US12758953B2 - Status: Granted - Kind: B2 - Application number: 18/261,481 - Filed: 2022-01-13 - Published: 2024-09-12 - Granted: 2026-10-13 - Earliest claimed: 2021-01-13 - Assignees: Chevron U.S.A. Inc. - Applicants: CHEVRON U.S.A. Inc. - Inventors: Yihua Zhang; Adeola Ojo; Guan-Dao Lei - Web page: https://patentgrep.com/patent/US12758953B2 ## CPC - B01J 29/7661: {MRE-type, e.g. ZSM-48} - B01J 29/00: Catalysts comprising molecular sieves {(molecular sieves per se C01B)} - B01J 35/30: characterised by their physical properties - B01J 35/70: characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) - C10G 45/64: containing crystalline alumino-silicates, e.g. molecular sieves - B01J 2235/15: X-ray diffraction - 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 A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8. ## Claims ### Claim 1 A method of making a hydroisomerization catalyst, the method comprising: forming a mixture comprising a molecular sieve belonging to the ZSM-48 family of zeolites and an inorganic oxide, wherein the molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product; and has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8; extruding the mixture to form an extrudate or formed particle; drying the extrudate or formed particle; and calcining the dried extrudate or formed particle; wherein the method further comprises incorporating into the hydroisomerization catalyst one or more first modifiers selected from Groups 8 to 10 and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd); and wherein incorporating into the hydroisomerization catalyst the one or more first modifiers and the one or more second modifiers comprises loading the calcined extrudate or formed particle with the one or more first modifiers and/or the one or more second modifiers to form a modified calcined extrudate or formed particle by: contacting the calcined extrudate or formed particle with a first impregnation solution comprising either the one or more first modifiers or the one or more second modifiers, optionally under sufficient impregnation conditions to impregnate the calcined extrudate or formed particle with at least about 0.1 wt. % of the respective one or more first modifiers or one or more second modifiers; and contacting the calcined extrudate or formed particle with a second impregnation solution comprising the corresponding other of the one or more second modifiers or the one or more first modifiers, optionally under sufficient impregnation conditions to impregnate the calcined extrudate or formed particle with at least about 0.1 wt. % of the respective one or more second modifiers or one or more first modifiers; or contacting the calcined extrudate or formed particle with a third impregnation solution comprising both the one or more first modifiers and the one or more second modifiers, optionally under sufficient impregnation conditions to impregnate the calcined extrudate or formed particle with at least about 0.1 wt. % of the one or more first modifiers and at least about 0.1 wt. % the one or more second modifiers, and drying the modified calcined extrudate or formed particle; or loading the molecular sieve with the one or more first modifiers and the one or more second modifiers prior to forming the mixture, optionally under sufficient conditions to load the molecule sieve with at least about 0.1 wt. % of the one or more first modifiers and at least about 0.1 wt. % the one or more second modifiers. ### Claim 2 (depends on 1) The method according to claim 1, wherein incorporating into the hydroisomerization catalyst the one or more first modifiers and the one or more second modifiers comprises loading the calcined extrudate or formed particle with the one or more first modifiers and/or the one or more second modifiers to form a modified calcined extrudate or formed particle by: contacting the calcined extrudate or formed particle with a first impregnation solution comprising either the one or more first modifiers or the one or more second modifiers, optionally under sufficient impregnation conditions to impregnate the calcined extrudate or formed particle with at least about 0.1 wt. % of the respective one or more first modifiers or one or more second modifiers; and contacting the calcined extrudate or formed particle with a second impregnation solution comprising the corresponding other of the one or more second modifiers or the one or more first modifiers, optionally under sufficient impregnation conditions to impregnate the calcined extrudate or formed particle with at least about 0.1 wt. % of the respective one or more second modifiers or one or more first modifiers; and drying the modified calcined extrudate or formed particle. ### Claim 3 (depends on 1) The method according to claim 1, wherein incorporating into the hydroisomerization catalyst the one or more first modifiers and the one or more second modifiers comprises loading the molecular sieve with the one or more first modifiers and the one or more second modifiers prior to forming the mixture, optionally under sufficient conditions to load the molecule sieve with at least about 0.1 wt. % of the one or more first modifiers and at least about 0.1 wt. % the one or more second modifiers. ### Claim 4 (depends on 1) The method according to claim 1, wherein incorporating into the hydroisomerization catalyst the one or more first modifiers and the one or more second modifiers comprises contacting the calcined extrudate or formed particle with a third impregnation solution comprising both the one or more first modifiers and the one or more second modifiers, optionally under sufficient impregnation conditions to impregnate the calcined extrudate or formed particle with at least about 0.1 wt. % of the one or more first modifiers and at least about 0.1 wt. % the one or more second modifiers. ### Claim 5 (depends on 1) The method according to claim 1, wherein: the molecular sieve has a silicon oxide to aluminium oxide mole ratio of about 70 to about 160; the molecular sieve comprises at least 80% polytype 6 of the total ZSM-48 type material present in the product; the molecular sieve comprises between about 0.1 and about 2 wt. % EU-1; and/or the crystallites collectively have an average aspect ratio of between about 1 and about 5. ### Claim 6 (depends on 1) The method according to claim 1, wherein the mixture comprises from about 5 wt. % to about 80 wt. % of the molecular sieve. ### Claim 7 (depends on 1) A hydroisomerization catalyst manufactured by the method according to claim 1. ### Claim 8 (depends on 1) The method according to claim 1, wherein incorporating into the hydroisomerization catalyst the one or more first modifiers and the one or more second modifiers comprises loading the hydroisomerization catalyst with about 0.1 wt. % to about 1.5 wt. % Mg.