The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
Jul. 26, 2023
Chevron U.s.a. Inc., San Ramon, CA (US);
Christopher Michael Lew, Alameda, CA (US);
Rebecca Edyne Maclean, Pleasanton, CA (US);
Kurt Owen Jensen, Richmond, CA (US);
CHEVRON U.S.A. INC., San Ramon, CA (US);
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).