公开(公告)号：US20190299159A1

公开(公告)日：2019-10-03

申请号：US16447243

申请日：2019-06-20

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Andrew Francis Chiffey ,  Oliver Cooper ,  Christopher Daly ,  Mark Feaviour ,  Steven Merrick ,  Francois Moreau ,  Matthew O'Brien ,  David Thompsett

IPC: B01D53/94 ,  F01N3/10 ,  B01J37/00 ,  B01J23/644 ,  B01J37/02 ,  F01N3/08 ,  B01J29/78 ,  B01J37/10 ,  B01J35/04 ,  B01J35/00 ,  B01J29/80 ,  B01J29/83 ,  B01J23/656

Abstract: An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: bismuth (Bi), antimony (Sb) or an oxide thereof; a platinum group metal (PGM) selected from the group consisting of (i) platinum (Pt), (ii) palladium (Pd) and (iii) platinum (Pt) and palladium (Pd); and a support material, which is a refractory oxide; wherein the platinum group metal (PGM) is supported on the support material; and wherein the bismuth (Bi), antimony (Sb) or an oxide thereof is supported on the support material and/or the refractory oxide comprises the bismuth, antimony or an oxide thereof.

公开(公告)号：US12296319B2

公开(公告)日：2025-05-13

申请号：US18493835

申请日：2023-10-25

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Andrew Chiffey ,  Kieran Cole ,  Oliver Cooper ,  Christopher Daly ,  Lee Gilbert ,  Robert Hanley ,  David Micallef ,  Francois Moreau ,  Paul Phillips ,  George Platt

IPC: B01J21/04 ,  B01D53/94 ,  B01J21/08 ,  B01J23/02 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/58 ,  B01J37/02 ,  F01N3/02 ,  F01N3/023 ,  F01N3/10

Abstract: A composite oxidation catalyst for use in an exhaust system for treating an exhaust gas produced by a vehicular compression ignition internal combustion engine is disclosed. The composite oxidation catalyst comprises a honeycomb flow-through substrate monolith and two catalyst washcoat zones arranged axially in series on and along the substrate surface.

公开(公告)号：US10357743B2

公开(公告)日：2019-07-23

申请号：US15293364

申请日：2016-10-14

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Andrew Francis Chiffey ,  Oliver Cooper ,  Christopher Daly ,  Mark Feaviour ,  Steven Merrick ,  Francois Moreau ,  Matthew O'Brien ,  David Thompsett

IPC: B01D53/94 ,  B01J23/644 ,  B01J23/656 ,  B01J29/78 ,  B01J35/04 ,  F01N3/10 ,  B01J35/00 ,  B01J37/02 ,  B01J37/10 ,  B01J29/80 ,  B01J29/83 ,  B01J37/00 ,  F01N3/08

Abstract: An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: bismuth (Bi), antimony (Sb) or an oxide thereof; a platinum group metal (PGM) selected from the group consisting of (i) platinum (Pt), (ii) palladium (Pd) and (iii) platinum (Pt) and palladium (Pd); and a support material, which is a refractory oxide; wherein the platinum group metal (PGM) is supported on the support material; and wherein the bismuth (Bi), antimony (Sb) or an oxide thereof is supported on the support material and/or the refractory oxide comprises the bismuth, antimony or an oxide thereof.

公开(公告)号：US11845064B2

公开(公告)日：2023-12-19

申请号：US17594694

申请日：2020-06-26

Applicant: Johnson Matthey Public Limited Company

Inventor： Andrew Chiffey ,  Kieran John Cole ,  Oliver Cooper ,  Christopher Daly ,  Lee Gilbert ,  Robert Hanley ,  David Micallef ,  Francois Moreau ,  Paul Phillips ,  George Platt

IPC: B01J21/08 ,  B01J23/42 ,  B01J23/44 ,  B01J23/58 ,  B01J35/04 ,  B01D53/94 ,  F01N3/023 ,  F01N3/10 ,  B01J37/02

CPC classification number: B01J23/44 ,  B01J21/08 ,  B01J23/42 ,  B01J37/0215 ,  F01N3/0231 ,  F01N3/10 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14

Abstract: A composite oxidation catalyst (18, 20) for use in an exhaust system for treating an exhaust gas produced by a vehicular compression ignition internal combustion engine (30) and upstream of a particulate matter filter (44, 50) in the exhaust system comprises a substrate (5) having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); and three or more catalyst washcoat zones (1, 2, 3; or 1, 2, 3, 4) arranged axially in series on and along the substrate surface, wherein a first catalyst washcoat zone (1) having a length L1, wherein L1

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.