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：US10137413B2

公开(公告)日：2018-11-27

申请号：US15668829

申请日：2017-08-04

Applicant: Johnson Matthey Public Limited Company

Inventor： Kieran Cole ,  Lothar Hofmann ,  Calum Robertson

IPC: F01N3/10 ,  B01D53/94 ,  B01J21/04 ,  B01J23/42 ,  B01J23/44 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08 ,  B01J37/03 ,  B01J35/10

Abstract: An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine. The oxidation catalyst comprises: a substrate; a capture material for capturing at least one sulfur containing impurity in the exhaust gas produced by the diesel engine; wherein the capture material comprises a metal for reacting with an oxide of sulfur in the exhaust gas and particles of a refractory oxide, wherein the particles of the refractory oxide have a mean specific surface area ≤50 m2/g; and a catalytic region disposed on the substrate; wherein the catalytic region comprises a catalytic material comprising a platinum group metal (PGM) selected from the group consisting of platinum (Pt), palladium (Pd) and a combination of platinum (Pt) and palladium (Pd).

公开(公告)号：US09789442B2

公开(公告)日：2017-10-17

申请号：US15133392

申请日：2016-04-20

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Kieran Cole ,  Colin Newman ,  Isabel Tingay ,  Olivier Sonntag ,  Gudmund Smedler ,  Ruth Savage

IPC: F01N3/10 ,  B01D53/94 ,  F01N3/20 ,  F01N3/035 ,  B01D53/96 ,  F01N3/023 ,  F01N3/28 ,  F01N13/00

CPC classification number: B01D53/944 ,  B01D53/9477 ,  B01D53/96 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/903 ,  B01D2255/905 ,  B01D2258/012 ,  F01N3/0231 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/2828 ,  F01N13/009 ,  F01N2260/04 ,  F01N2330/06 ,  F01N2330/60 ,  F01N2510/0682 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A catalytic aftertreatment system for a diesel engine exhaust gas is described. The system comprises a diesel oxidation catalyst (DOC) and an aftertreatment device located downstream of the diesel oxidation catalyst (DOC), which aftertreatment device requires periodic heat treatment, and means to generate a temperature increase within the aftertreatment device, said diesel oxidation catalyst (DOC) comprising an upstream zone of length from 0.5 to 2 inches (12.7-50.81 mm) of higher oxidation activity for hydrocarbons (HC) than the remainder of the diesel oxidation catalyst (DOC).

公开(公告)号：US09341098B2

公开(公告)日：2016-05-17

申请号：US13713349

申请日：2012-12-13

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： Kieran Cole ,  Colin Newman ,  Isabel Tingay ,  Olivier Sonntag ,  Gudmund Smedler ,  Ruth Savage

IPC: F01N3/10 ,  F01N3/20 ,  B01J35/00 ,  B01J23/44 ,  B01D53/94 ,  F01N3/023 ,  F01N3/035 ,  B01J37/02 ,  B01J35/04

CPC classification number: F01N3/20 ,  B01D53/944 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/9032 ,  B01D2255/9202 ,  B01D2258/012 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0228 ,  F01N3/0231 ,  F01N3/035 ,  F01N3/103 ,  F01N3/2066 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A catalytic aftertreatment system for a diesel engine exhaust gas is described. The system comprises a diesel oxidation catalyst (DOC) and an aftertreatment device located downstream of the diesel oxidation catalyst (DOC), which aftertreatment device requires periodic heat treatment, and means to generate a temperature increase within the aftertreatment device, said diesel oxidation catalyst (DOC) comprising an upstream zone of length from 0.5 to 2 inches (12.7-50.81 mm) of higher oxidation activity for hydrocarbons (HC) than the remainder of the diesel oxidation catalyst (DOC).

Abstract translation: 描述了用于柴油机废气的催化后处理系统。 该系统包括位于柴油机氧化催化剂（DOC）下游的柴油氧化催化剂（DOC）和后处理装置，该后处理装置需要周期性热处理，以及在后处理装置内产生升温的装置，所述柴油机氧化催化剂 DOC）包括比柴油氧化催化剂（DOC）的其余部分更高的烃类（HC）氧化活性的长度为0.5至2英寸（12.7-50.81mm）的上游区域。