US 12,428,305 B2
Zeolite structure synthesized using mixtures of organic structure directing agents
Ahmad Moini, Iselin, NJ (US); Eduard L. Kunkes, Iselin, NJ (US); Jonelle Charmaine Thomas, Charlotte, NC (US); Vivek Vattipalli, Iselin, NJ (US); and Christopher R. Castellano, Ringoes, NJ (US)
Assigned to BASF Mobile Emissions Catalysts LLC, Iselin, NJ (US)
Appl. No. 17/757,302
Filed by BASF MOBILE EMISSIONS CATALYSTS LLC, Iselin, NJ (US)
PCT Filed Feb. 9, 2021, PCT No. PCT/US2021/017261
§ 371(c)(1), (2) Date Jun. 14, 2022,
PCT Pub. No. WO2022/173419, PCT Pub. Date Aug. 18, 2022.
Prior Publication US 2023/0348287 A1, Nov. 2, 2023
Int. Cl. C01B 39/02 (2006.01); B01D 53/94 (2006.01); B01J 29/72 (2006.01)
CPC C01B 39/02 (2013.01) [B01D 53/9418 (2013.01); B01J 29/723 (2013.01); B01D 2255/50 (2013.01); B01D 2257/40 (2013.01); B01D 2258/01 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of synthesizing a small pore zeolite, the method comprising:
preparing a mixture of water, an aluminum source, a silicon source, a source of a first organic structure-directing agent, and a source of a second organic structure-directing agent to form a synthesis gel; and
subjecting the synthesis gel to a crystallization process to crystallize the small pore zeolite;
wherein the first organic structure-directing agent comprises a bis-quaternary ammonium cation, a derivative of the bis-quaternary ammonium cation, or a combination thereof, and the second organic structure-directing agent comprises a mono-quaternary ammonium cation, a derivative of the mono-quaternary ammonium cation, or a combination thereof; and
wherein the small pore zeolite has a crystalline framework structure type selected from the group consisting of AEI, AFT, AFX, AFV, AVL, CHA, EAB, ERI, ITW, KFI, LEV, LTA, MER, SAS, SAT, and SAV.