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    Synthesis of aluminum-containing molecular sieve SSZ-60
    12.
    发明授权
    Synthesis of aluminum-containing molecular sieve SSZ-60 有权

    公开(公告)号：US12269749B2

    公开(公告)日：2025-04-08

    申请号：US17964981

    申请日：2022-10-13

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Christopher Michael Lew

    IPC: C01B39/24 ,  C01B39/04

    Abstract: A method for preparing an aluminosilicate molecular sieve having the SSY framework structure is described. The method includes (1) a step of preparing a reaction mixture containing an aluminosilicate zeolite having an FAU framework type; N-ethyl-N-(3,3,5-trimethylcyclohexyl)pyrrolidinium cations and/or N-ethyl-N-(2,4,4-trimethylcyclopentyl)pyrrolidinium cations; an alkali metal; hydroxide ions; seed crystals; and water; and (2) a step of subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the aluminosilicate molecular sieve. The resulting molecular sieves are useful as catalysts, particularly when used in combination with exchanged transition metal(s).

    METHOD FOR PREPARING ALUMINOSILICATE SSZ-82
    13.
    发明申请
    METHOD FOR PREPARING ALUMINOSILICATE SSZ-82 有权

    公开(公告)号：US20240383762A1

    公开(公告)日：2024-11-21

    申请号：US18319462

    申请日：2023-05-17

    Applicant: Chevron U.S.A. Inc.

    Inventor： Christopher Michael Lew ,  Rebecca Edyne MacLean ,  Kurt Owen Jensen

    IPC: C01B39/48 ,  C01B37/02

    Abstract: A method is disclosed making aluminosilicate SSZ-82. The method includes (1) preparing a reaction mixture comprising: an amorphous alumina source comprising predominantly aluminum hydroxide; an amorphous silica source comprising predominantly colloidal silica; a source of an alkali metal cation; an organic structure directing agent comprising a 1,6-bis(N-cyclohexylpyrrolidinium)hexane dication; hydroxide ions; seed crystals, wherein the seed crystals comprise a crystalline molecular sieve having an SSZ-82 framework; and water; (2) heating the reaction mixture under crystallization conditions including a temperature of from 100° C. to 200° C. for a time sufficient to form crystals of the aluminosilicate zeolite; and (3) recovering at least a portion of the aluminosilicate zeolite from step (2).

    METHOD FOR PREPARING HIGH-SILICA Y ZEOLITE
    17.
    发明申请
    METHOD FOR PREPARING HIGH-SILICA Y ZEOLITE 有权

    公开(公告)号：US20250033984A1

    公开(公告)日：2025-01-30

    申请号：US18359247

    申请日：2023-07-26

    Applicant: Chevron U.S.A. Inc.

    Inventor： Christopher Michael Lew ,  Rebecca Edyne MacLean ,  Kurt Owen Jensen

    IPC: C01B39/02

    Abstract: A method is disclosed for making a high-silica zeolite having an FAU framework structure. The method includes: (1) preparing a reaction mixture comprising: (a) a source of silica; (b) a source of alumina; (c) a source of an alkali or alkaline earth metal cation; (d) an organic structure directing agent containing at least one cation selected from a 1,2-dimethyl-3-(3-methylbenzyl) imidazolium cation, a 1-ethyl-3-methylimidazolium cation, and a 1-butyl-3-methylimidazolium cation; (e) a source of hydroxide ions; and (f) water; (2) heating the reaction mixture under crystallization conditions including a temperature of from 80° C. to 200° C. for a time sufficient to form crystals of the high-silica zeolite; and (3) recovering at least a portion of the high-silica zeolite from step (2).

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