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).

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).