公开(公告)号：US20240299917A1

公开(公告)日：2024-09-12

申请号：US18177309

申请日：2023-03-02

Applicant: CHEVRON U.S.A. INC.

Inventor： Christopher Michael LEW ,  Rebecca Edyne MACLEAN ,  Kurt Owen JENSEN

IPC: B01J29/70 ,  B01J35/02 ,  B01J37/00 ,  B01J37/03 ,  B01J37/04 ,  C01B39/48

CPC classification number: B01J29/70 ,  B01J35/40 ,  B01J37/0018 ,  B01J37/031 ,  B01J37/04 ,  C01B39/48 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/03

Abstract: A method is disclosed for producing small crystal forms of zeolite SSZ-81. The method includes forming a reaction mixture containing an alumina-coated silica sol, a source of an alkali metal, a structure directing agent containing 1,5-bis(N-methylpiperidinium)pentane dications and/or 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, a source of hydroxide ions, and water; and subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the zeolite. The compositions made according to that method, as well as the various uses of the compositions, are also disclosed.