公开(公告)号：US20210299643A1

公开(公告)日：2021-09-30

申请号：US17301109

申请日：2021-03-25

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Yannick BIDAL ,  Hai-Ying CHEN ,  Joseph FEDEYKO ,  Neil GREENHAM ,  Matthew HARRIS ,  Jing LU

IPC分类号： B01J29/76 ,  B01J37/02 ,  B01J29/44 ,  B01J29/80 ,  B01J35/10 ,  B01J29/78 ,  B01D53/94

摘要： The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst comprising a Cu- and Mn-exchanged molecular sieve; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2-Al2O3 mixed oxide. The platinum may be fixed on the support in solution.

公开(公告)号：US20200070133A1

公开(公告)日：2020-03-05

申请号：US16556475

申请日：2019-08-30

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Yannick BIDAL ,  Joseph FEDEYKO ,  Alexander GREEN ,  Matthew HARRIS ,  Jing LU ,  Nicholas McNAMARA

IPC分类号： B01J29/78 ,  B01J29/76 ,  B01J29/46 ,  B01J29/48 ,  B01J35/00 ,  B01D53/94 ,  F01N3/20

摘要： A catalyst composition for treating an exhaust gas, the catalyst composition comprising a molecular sieve, the molecular sieve comprising exchanged copper and exchanged manganese.

公开(公告)号：US20230347326A1

公开(公告)日：2023-11-02

申请号：US18301310

申请日：2023-04-17

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Daniel AVIS ,  Rafal BARAN ,  Gavin BROWN ,  Alexander GREEN ,  Neil GREENHAM ,  Matthew HARRIS ,  Oliver HEMMING ,  Carmelo IACONO ,  Caitlin JENKINS ,  Alanna MURPHY ,  Paul PHILLIPS

IPC分类号： B01J29/76 ,  B01J23/72 ,  B01J35/00 ,  F01N3/20 ,  F01N3/28 ,  B01D53/94

CPC分类号： B01J29/7615 ,  B01J23/72 ,  B01J35/0006 ,  F01N3/208 ,  F01N3/2828 ,  B01D53/9418 ,  B01D53/9495 ,  B01D53/9472 ,  F01N2610/02 ,  F01N2370/04 ,  F01N2610/1453 ,  B01D2251/2062 ,  B01D2255/20738 ,  B01D2255/502 ,  B01D2255/20761 ,  B01D2255/9032

摘要： A method of treating exhaust gas from a lean burn internal combustion engine is disclosed. The method comprises: introducing ammonia or an ammonia precursor into the exhaust gas upstream of an Fe-SCR catalyst, the Fe-SCR catalyst comprising iron and a zeolite; and contacting the exhaust gas with the Fe-SCR catalyst; wherein the amount of ammonia or ammonia precursor introduced into the exhaust gas upstream of the Fe-SCR catalyst is controlled to provide an ammonia-to-NOx molar ratio (ANR) in the exhaust gas contacting the Fe-SCR catalyst of from greater than 2 to 6.

公开(公告)号：US20190283011A1

公开(公告)日：2019-09-19

申请号：US16352902

申请日：2019-03-14

申请人： Johnson Matthey Public Limited Company

发明人： Hai-Ying CHEN ,  Joseph FEDEYKO ,  Neil GREENHAM ,  Matthew HARRIS ,  Jing LU

IPC分类号： B01J35/00 ,  B01J23/42 ,  B01J29/76 ,  B01J21/12 ,  B01J37/02 ,  B01D53/94

摘要： The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2—Al2O3 mixed oxide. The platinum may be fixed on the support in solution.