公开(公告)号：US20220080399A1

公开(公告)日：2022-03-17

申请号：US17457067

申请日：2021-12-01

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： John CASCI ,  Jillian COLLIER ,  Paul COX ,  Robert HODGKINS ,  Geraint LLOYD ,  Alessandro TURRINA

IPC: B01J29/72 ,  B01D53/94 ,  B01J35/04 ,  B01J37/00 ,  B01J37/02 ,  B01J37/10 ,  C01B39/48 ,  F01N3/20

Abstract: JMZ-1, a zeolite having a CHA structure and containing trimethyl(cyclohexylmethyl)ammonium cations as a structure directing agent is described. A calcined zeolite, JMZ-1C, that does not contain a structure directing agent, is also described. Metal containing JMZ-1C has improved SCR activity compared to CHA-containing zeolites having the same metal loading and comparable silica:alumina ratios (SAR). Methods of preparing JMZ-1, JMZ-1C and metal containing calcined counterparts of JMZ-1C are described along with methods of using JMZ-1C and metal containing calcined counterparts of JMZ-1C in treating exhaust gases.