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WO2008152273A3 - Catalytic monolith for exhaust gases from an internal combustion engine - Google Patents

Catalytic monolith for exhaust gases from an internal combustion engine Download PDF

Info

Publication number
WO2008152273A3
WO2008152273A3 PCT/FR2008/050845 FR2008050845W WO2008152273A3 WO 2008152273 A3 WO2008152273 A3 WO 2008152273A3 FR 2008050845 W FR2008050845 W FR 2008050845W WO 2008152273 A3 WO2008152273 A3 WO 2008152273A3
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gases
channels
monolith
catalytic
combustion engine
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.)
Ceased
Application number
PCT/FR2008/050845
Other languages
French (fr)
Other versions
WO2008152273A2 (en
Inventor
Gabriel Crehan
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to EP08805792A priority Critical patent/EP2150344A2/en
Publication of WO2008152273A2 publication Critical patent/WO2008152273A2/en
Publication of WO2008152273A3 publication Critical patent/WO2008152273A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention relates to a catalytic monolith for the exhaust gases from an internal combustion engine, of the type that comprises a plurality of channels (4) extending through the monolith from one transverse face to the other, the channels (4) including several walls (10), the monolith further including a coating catalytic material (14) applied onto the walls (10) of the channels (4), the catalytic material (14) having a catalytic surface (16) in contact with the exhaust gases flowing along the channels (4). The distance (d) between a point of the catalytic surface (16) and the closest point of the wall (10) on which the coating (14) is applied at this point varies along the longitudinal direction of the monolith so that the catalytic surface (16) has a geometry adapted to a non-laminar flow of the exhaust gases in the channels (4).
PCT/FR2008/050845 2007-05-30 2008-05-16 Catalytic monolith for exhaust gases from an internal combustion engine Ceased WO2008152273A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08805792A EP2150344A2 (en) 2007-05-30 2008-05-16 Catalytic monolith for exhaust gases from an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0755335A FR2916656B1 (en) 2007-05-30 2007-05-30 CATALYTIC MONOLITH FOR EXHAUST GASES FROM AN INTERNAL COMBUSTION ENGINE
FR0755335 2007-05-30

Publications (2)

Publication Number Publication Date
WO2008152273A2 WO2008152273A2 (en) 2008-12-18
WO2008152273A3 true WO2008152273A3 (en) 2009-02-26

Family

ID=38728733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2008/050845 Ceased WO2008152273A2 (en) 2007-05-30 2008-05-16 Catalytic monolith for exhaust gases from an internal combustion engine

Country Status (3)

Country Link
EP (1) EP2150344A2 (en)
FR (1) FR2916656B1 (en)
WO (1) WO2008152273A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040001781A1 (en) * 2002-06-27 2004-01-01 Engelhard Corporation Multi-zone catalytic converter
EP1598102A1 (en) * 2003-02-28 2005-11-23 Ibiden Co., Ltd. Ceramic honeycomb structure
EP1634646A1 (en) * 2004-09-13 2006-03-15 Mangold, Matthias Process for producing exhaust gas purification means and purification means
DE102005024108A1 (en) * 2005-05-25 2006-11-30 Süd-Chemie AG Process and apparatus for the preparation of catalysts and their use in the purification of exhaust gases

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040001781A1 (en) * 2002-06-27 2004-01-01 Engelhard Corporation Multi-zone catalytic converter
EP1598102A1 (en) * 2003-02-28 2005-11-23 Ibiden Co., Ltd. Ceramic honeycomb structure
EP1634646A1 (en) * 2004-09-13 2006-03-15 Mangold, Matthias Process for producing exhaust gas purification means and purification means
DE102005024108A1 (en) * 2005-05-25 2006-11-30 Süd-Chemie AG Process and apparatus for the preparation of catalysts and their use in the purification of exhaust gases

Also Published As

Publication number Publication date
WO2008152273A2 (en) 2008-12-18
EP2150344A2 (en) 2010-02-10
FR2916656A1 (en) 2008-12-05
FR2916656B1 (en) 2011-05-13

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