FR2326973A1 - Catalyseur permettant d'eliminer les oxydes d'azote des gaz d'echappement d'un moteur a combustion interne - Google Patents

Catalyseur permettant d'eliminer les oxydes d'azote des gaz d'echappement d'un moteur a combustion interne

Info

Publication number
FR2326973A1
FR2326973A1 FR7344620A FR7344620A FR2326973A1 FR 2326973 A1 FR2326973 A1 FR 2326973A1 FR 7344620 A FR7344620 A FR 7344620A FR 7344620 A FR7344620 A FR 7344620A FR 2326973 A1 FR2326973 A1 FR 2326973A1
Authority
FR
France
Prior art keywords
catalyst
combustion engine
internal combustion
exhaust gases
nitrogen oxides
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Withdrawn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
FR7344620A
Other languages
English (en)
French (fr)
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.)
GCP Products UK Ltd
WR Grace and Co Conn
Original Assignee
WR Grace Ltd
WR Grace and Co Conn
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 WR Grace Ltd, WR Grace and Co Conn filed Critical WR Grace Ltd
Publication of FR2326973A1 publication Critical patent/FR2326973A1/fr
Withdrawn legal-status Critical Current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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/892—Nickel and noble metals
    • 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
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • 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
    • B01D2255/1025—Rhodium
    • 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
    • B01D2255/1026—Ruthenium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20753—Nickel
    • 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
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • 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
    • B01J35/51—Spheres

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
FR7344620A 1972-12-14 1973-12-13 Catalyseur permettant d'eliminer les oxydes d'azote des gaz d'echappement d'un moteur a combustion interne Withdrawn FR2326973A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31506172A 1972-12-14 1972-12-14

Publications (1)

Publication Number Publication Date
FR2326973A1 true FR2326973A1 (fr) 1977-05-06

Family

ID=23222715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7344620A Withdrawn FR2326973A1 (fr) 1972-12-14 1973-12-13 Catalyseur permettant d'eliminer les oxydes d'azote des gaz d'echappement d'un moteur a combustion interne

Country Status (6)

Country Link
JP (1) JPS5635938B2 (cg-RX-API-DMAC10.html)
CA (1) CA1038599A (cg-RX-API-DMAC10.html)
DE (1) DE2360975A1 (cg-RX-API-DMAC10.html)
FR (1) FR2326973A1 (cg-RX-API-DMAC10.html)
GB (1) GB1415757A (cg-RX-API-DMAC10.html)
IT (1) IT1001405B (cg-RX-API-DMAC10.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466278A1 (fr) * 1979-10-04 1981-04-10 Pro Catalyse Catalyseur et procede de traitement des gaz d'echappement des moteurs a combustion interne
EP0244127A1 (en) * 1986-04-16 1987-11-04 Johnson Matthey, Inc., Method for catalytically controlling exhaust gaz from automobiles
US4895824A (en) * 1987-09-08 1990-01-23 W. R. Grace & Co.-Conn. Add-on hydrogen sulfide trap
FR3166555A1 (fr) * 2024-09-25 2026-03-27 IFP Energies Nouvelles Catalyseur de PdNi pour la réduction catalytique des oxydes d’azote (NOx) en présence d’hydrogène

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259453A (en) * 1962-07-19 1966-07-05 Du Pont Method and apparatus for treating exhaust gases of internal combustion engines
US3397154A (en) * 1963-07-09 1968-08-13 Du Pont Preparation of alumina-supported catalyst compositions and the products thereof
US3513109A (en) * 1967-04-19 1970-05-19 Du Pont Process for applying catalytic coatings
US3524721A (en) * 1967-12-22 1970-08-18 Ethyl Corp Catalyst composition
GB1390182A (en) * 1971-03-16 1975-04-09 Johnson Matthey Co Ltd Catalysis
JPS5338716B2 (cg-RX-API-DMAC10.html) * 1972-05-08 1978-10-17

Also Published As

Publication number Publication date
JPS5046586A (cg-RX-API-DMAC10.html) 1975-04-25
JPS5635938B2 (cg-RX-API-DMAC10.html) 1981-08-20
DE2360975A1 (de) 1974-06-20
GB1415757A (en) 1975-11-26
CA1038599A (en) 1978-09-19
IT1001405B (it) 1976-04-20

Similar Documents

Publication Publication Date Title
IT996622B (it) Dispositivo per la depurazione dei gas di scarico di motori a combustione interna
IT1006851B (it) Dispositivo per la depurazione del gas di scarico di motori a combu stione interna
CA996357A (en) Catalyzer for detoxifying exhaust gases from internal combustion engines
BE787077A (fr) Procede, dispositif et catalyseur de decomposition des oxydes d'azote des gaz d'echappement de moteurs a combustion interne
JPS5279124A (en) Exhaust gas purifying apparatus for internal combustion engine
BE757185A (fr) Systeme d'evacuation des gaz d'echappement pour moteur a combustion interne
IT945421B (it) Reattore di postcombustione dei gas di scarico di un motore a combustione interna
FR2303158A1 (fr) Dispositif a catalyse pour supprimer la toxicite des gaz d'echappement de moteurs a combustion interne
IT990517B (it) Dispositivo per disintossicare i gas di scarico di macchine a combustione interna
IT998750B (it) Dispositivo per la depurazione dei gas di scarico di motori a combu stione interna
FR2316435A1 (fr) Perfectionnement aux dispositifs d'echappement des gaz d'un moteur a combustion
FR2307130A1 (fr) Dispositif pour epurer les gaz d'echappement de moteurs a combustion interne
FR2313557A1 (fr) Filtres pour les gaz d'echappement des moteurs a combustion interne
BE831479A (fr) Appareil d'admission et d'echappement pour un moteur a combustion interne
FR2293965A1 (fr) Purification des gaz d'echappement des moteurs a explosion ou a combustion interne
FR2323008A1 (fr) Dispositif a chambres de reaction des gaz d'echappement pour moteur a combustion interne
JPS5471226A (en) Catalytic transducer for exhaust gas from internal combustion engine
FR2317486A1 (fr) Procede de filtration des gaz d'echappement d'un moteur a combustion interne a auto-allumage
IT979899B (it) Procedimento per la rimozione degli ossidi di azoto da gas di scarico di motori a combustione interna
CA1009022A (en) Removal of pollutants from exhaust gas of internal combustion engines
IT1001405B (it) Catalizzatore utile per togliere l ossido d azoto dal gas di scari co di un motore a combustione interna
JPS5387973A (en) Purification of exhaust gas from diesel internal combustion engine
BE808548A (fr) Procede et appareil d'emission de gaz d'echappement de moteur a combustion interne
ZA733180B (en) Internal combustion engine operation utilizing exhaust gas recirculation
AU457445B2 (en) Catalyst for removing nitrogen oxides contained inthe exhaust gas from internal combustion engines andthe use thereof

Legal Events

Date Code Title Description
ST Notification of lapse