GB2558186A8 - Catalysed monolith substrate for a diesel engine - Google Patents

Catalysed monolith substrate for a diesel engine

Info

Publication number
GB2558186A8
GB2558186A8 GB1614541.9A GB201614541A GB2558186A8 GB 2558186 A8 GB2558186 A8 GB 2558186A8 GB 201614541 A GB201614541 A GB 201614541A GB 2558186 A8 GB2558186 A8 GB 2558186A8
Authority
GB
United Kingdom
Prior art keywords
longitudinal direction
face
coating
along
monolith substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1614541.9A
Other versions
GB2558186A (en
GB201614541D0 (en
Inventor
Francis Chiffey Andrew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of GB201614541D0 publication Critical patent/GB201614541D0/en
Publication of GB2558186A publication Critical patent/GB2558186A/en
Publication of GB2558186A8 publication Critical patent/GB2558186A8/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/902—Multilayered catalyst
    • B01D2255/9022—Two layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/905—Catalysts having a gradually changing coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/915—Catalyst supported on particulate filters
    • B01D2255/9155—Wall flow filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/63—Platinum group metals with rare earths or actinides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)

Abstract

A catalysed monolith substrate 30 comprises: a coating 10 comprising catalytic material, wherein the catalytic material comprises a platinum group metal selected from the group consisting of platinum, palladium, rhodium and a combination of two or more thereof; and a through-flow monolith substrate having a first face and a second face defining a longitudinal direction therebetween, and a plurality of channels extending in the longitudinal direction, wherein said plurality is of channels provides a plurality of inner surfaces; wherein the amount by weight of the platinum group metal varies in the longitudinal direction of the coating. The thickness of the coating may vary along the longitudinal direction such that the amount by weight of the platinum group metal varies along the longitudinal direction of the coating. The thickness of the coating in a longitudinal direction may increase along the longitudinal direction from the first face to the second face, decrease along the longitudinal direction from the first face to the second face or decrease along the longitudinal direction from the first face to a point in the longitudinal direction between the first and second faces and increase along the longitudinal direction from or after the point to the second face.
GB1614541.9A 2015-10-23 2016-08-26 Catalysed monolith substrate for a diesel engine Withdrawn GB2558186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1518784.2A GB201518784D0 (en) 2015-10-23 2015-10-23 Catalysed monolith substrate for a diesel engine

Publications (3)

Publication Number Publication Date
GB201614541D0 GB201614541D0 (en) 2016-10-12
GB2558186A GB2558186A (en) 2018-07-11
GB2558186A8 true GB2558186A8 (en) 2018-08-15

Family

ID=55130123

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1518784.2A Ceased GB201518784D0 (en) 2015-10-23 2015-10-23 Catalysed monolith substrate for a diesel engine
GB1614541.9A Withdrawn GB2558186A (en) 2015-10-23 2016-08-26 Catalysed monolith substrate for a diesel engine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1518784.2A Ceased GB201518784D0 (en) 2015-10-23 2015-10-23 Catalysed monolith substrate for a diesel engine

Country Status (1)

Country Link
GB (2) GB201518784D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6684257B2 (en) 2017-09-27 2020-04-22 イビデン株式会社 Honeycomb catalyst for exhaust gas purification
JP2019058876A (en) 2017-09-27 2019-04-18 イビデン株式会社 Honeycomb catalyst
JP6698602B2 (en) 2017-09-27 2020-05-27 イビデン株式会社 Honeycomb catalyst for exhaust gas purification
JP2019058875A (en) * 2017-09-27 2019-04-18 イビデン株式会社 Honeycomb catalyst
CN110732320B (en) * 2019-10-13 2022-04-08 苏州倍友环保科技有限公司 Diesel engine tail gas oxidation catalyst and preparation method and application thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712820A (en) * 1980-06-24 1982-01-22 Toyota Motor Corp Monolithic type catalyst structure for cleaning automobile exhaust
DE4342914C1 (en) * 1993-12-16 1995-07-27 Degussa Process for impregnating the flow channels of honeycomb bodies with defined concentration profiles
WO2005077497A1 (en) * 2004-02-11 2005-08-25 Umicore Ag & Co. Kg Exhaust gas cleaning catalyst with an axially varying precious metal concentration and processes for making the catalyst
TWI423848B (en) * 2006-07-13 2014-01-21 Umicore Shokubai Japan Co Ltd Method for purification of exhaust gas from internal-combustion engine
DE102011100017A1 (en) * 2011-04-29 2012-10-31 Süd-Chemie AG Process for the preparation of zoned catalysts

Also Published As

Publication number Publication date
GB2558186A (en) 2018-07-11
GB201614541D0 (en) 2016-10-12
GB201518784D0 (en) 2015-12-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)