公开(公告)号：US20250114779A1

公开(公告)日：2025-04-10

申请号：US18293417

申请日：2022-06-16

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Sanyuan YANG ,  Alessandro TURRINA ,  Daniel GILLELAND ,  Logan SPELL ,  Maria Pia RUGGERI

IPC: B01J37/30 ,  B01D53/94 ,  B01J29/70 ,  B01J29/76 ,  B01J37/00 ,  C01B39/02 ,  C01B39/48

Abstract: The present invention relates to a method for making a catalytic composition and, in particular, to a composition for treating a NOx-containing exhaust gas. The composition comprises a small-pore zeolite having a SAR of 9-30 and one or more rare earth metals. The method achieves the introduction of higher levels of rare earth (RE) metals into a zeolite than can be achieved with conventional wash-coating approaches.

公开(公告)号：US20240335824A1

公开(公告)日：2024-10-10

申请号：US18293533

申请日：2022-06-16

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Sanyuan YANG ,  Alessandro TURRINA ,  Logan SPELL ,  Daniel GILLELAND

IPC: B01J29/76 ,  B01D53/94 ,  B01J37/00 ,  B01J37/03 ,  B01J37/30 ,  C01B39/48

CPC classification number: B01J29/763 ,  B01D53/9418 ,  B01J37/0018 ,  B01J37/031 ,  B01J37/036 ,  B01J37/30 ,  C01B39/48 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9202 ,  B01D2255/9205 ,  B01D2255/9207 ,  B01D2257/404 ,  B01D2258/01 ,  B01J2229/186 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2006/12 ,  C01P2006/14

Abstract: A low SAR chabazite zeolite, its synthesis, and its use for the treatment of an exhaust gas, are disclosed. The chabazite (CHA) zeolite having an SAR of from 7 to 15, and at least one following features: (a) a mesoporous surface area of less than 35 m2 (b) a BET surface area of 500-800 m2/g; and/or (c) a micropore volume of 0.2-0.3 cm2/g.