公开(公告)号：US10603655B2

公开(公告)日：2020-03-31

申请号：US15938029

申请日：2018-03-28

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Guy Richard Chandler ,  Nuria Lastra-Calvo ,  Paul Richard Phillips ,  Jonathan Radcliffe ,  Stuart David Reid ,  Byron Truscott

IPC: B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/08 ,  B01J37/02 ,  B01J37/03 ,  B01J37/00 ,  B01J35/02

Abstract: A lean NOx trap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean NOx trap catalyst comprises a first layer, a second layer, and a third layer.

公开(公告)号：US10391478B2

公开(公告)日：2019-08-27

申请号：US15724775

申请日：2017-10-04

Applicant: Johnson Matthey Public Limited Company

Inventor： Desiree Duran-Martin ,  Rebecca Maksymowicz ,  Jonathan Radcliffe ,  Raj Rajaram

IPC: B01J23/63 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08 ,  B01D53/94 ,  B01J23/00 ,  B01J23/58 ,  B01J37/00 ,  F01N3/08

Abstract: A NOx adsorber catalyst composition, a NOx adsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The NOx adsorber catalyst composition a support material and one or more platinum group metals disposed on the support material, wherein the support material comprises a mixed dopant NOx storage enhancer.

公开(公告)号：US20220280919A1

公开(公告)日：2022-09-08

申请号：US17652201

申请日：2022-02-23

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Yannick Bidal ,  Alba Castanon Rodriguez ,  Andrew Chiffey ,  Oliver Cooper ,  Jonathan Radcliffe

IPC: B01J23/10 ,  B01J21/06 ,  B01J37/00 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20

Abstract: The present invention relates to a NOx storage material comprising a cerium-based mixed oxide comprising cerium, oxygen, and a first rare earth metal other than cerium, wherein said NOx storage material further comprises a second rare earth metal other than cerium; wherein said first rare earth metal is different to said second rare earth metal; and wherein said second rare earth metal is disposed or supported on the surface of the cerium-based mixed oxide.

公开(公告)号：US10233806B2

公开(公告)日：2019-03-19

申请号：US15291143

申请日：2016-10-12

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Gavin Michael Brown ,  Andrew Francis Chiffey ,  Paul Richard Phillips ,  Jonathan Radcliffe

IPC: F01N3/20 ,  F01N3/08 ,  F01N3/28 ,  F01N3/022 ,  F01N3/035 ,  F01N13/00 ,  B01D53/94 ,  B01J23/00 ,  B01J23/10 ,  B01J23/44 ,  B01J23/46 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J23/40 ,  B01J23/63 ,  B01J23/74 ,  B01J23/83 ,  B01J29/70

Abstract: An exhaust system for an internal combustion engine, the exhaust system comprising, a lean NOx trap, a NOx storage and reduction zone on a wall flow monolithic substrate having a pre-coated porosity of 50% or greater, the NOx storage and reduction zone comprising a platinum group metal loaded on one or more first support, the or each first support comprising one or more alkaline earth metal compound, and a selective catalytic reduction zone on a monolithic substrate, the selective catalytic reduction zone comprising copper or iron loaded on a second support, the second support comprising a molecular sieve.