ES487743A1 - Procedimiento para la preparacion de un catalizador - Google Patents

Procedimiento para la preparacion de un catalizador

Info

Publication number
ES487743A1
ES487743A1 ES487743A ES487743A ES487743A1 ES 487743 A1 ES487743 A1 ES 487743A1 ES 487743 A ES487743 A ES 487743A ES 487743 A ES487743 A ES 487743A ES 487743 A1 ES487743 A1 ES 487743A1
Authority
ES
Spain
Prior art keywords
catalyst
purification
exhaust gases
aluminum oxide
internal combustion
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.)
Expired
Application number
ES487743A
Other languages
English (en)
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.)
DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORMALS RO
Evonik Operations GmbH
Original Assignee
DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORMALS RO
Degussa GmbH
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 DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORMALS RO, Degussa GmbH filed Critical DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORMALS RO
Publication of ES487743A1 publication Critical patent/ES487743A1/es
Expired 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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] 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
    • B01J23/8933—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 also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • 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
    • B01J37/024—Multiple impregnation or coating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

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

Abstract

Procedimientos para la preparación de un catalizador que induce simultáneamente la oxidación de monóxido de carbono e hidrocarburos y la reducción de óxidos de nitrógeno en gases de escape de motores de combustión, caracterizado porque se impregna un material de soporte a base de A12O3 de las serie de transición, estabilizado en el retículo eventualmente con metal alcalinotérreo, con una solución acuosa de sal de cerio, zirconio e hierro, o se mezcla con los óxidos de éstos, luego se atempera durante 30-180 minutos en aire a 500 - 700ºC, después de ello se impregna el soporte con una solución acuosa de una sal de platino, rodio y eventualmente de uno o varios de los elementos aluminio, titanio, estaño, cromo manganeso, cobalto y níquel, se seca, y, a continuación, se trata a temperaturas de 250- 650ºC, preferentemente 450 - 550ºC, en una corriente de gas que contiene hidrógeno, siendo dimensionadas las sustancias de partida para una composición a base de a) 0,03 - 3% en peso de una fase activa que contiene platino, rodio y, eventualmente, de uno o varios de los elementos aluminio, titanio, estaño, cromo, manganeso, cobalto y níquel con una proporción en peso entre platino y rodio de 2: º- 20:1, y eventualmente una proporción en átomos entre los metales del grupo de platino y los metales no nobles de 1: 6- 2: 1, preferentemente 1: 4-1: 1; b) 5-15, preferentemente 10% en peso de una mezcla de Ce02 y Zr02, estando estos óxidos en proporciones en peso de 20-80 : 80 - 20; c) 1 -10 preferentemente 2- 6% en peso de Fe203, así como d) una cantidad restante de hasta 100% en peso de óxido de aluminio de la serie de transición.
ES487743A 1979-02-23 1980-01-16 Procedimiento para la preparacion de un catalizador Expired ES487743A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2907106A DE2907106C2 (de) 1979-02-23 1979-02-23 Abgaskatalysator und seine Verwendung zur Reinigung der Abgase von Verbrennungskraftmaschinen

Publications (1)

Publication Number Publication Date
ES487743A1 true ES487743A1 (es) 1980-06-16

Family

ID=6063765

Family Applications (1)

Application Number Title Priority Date Filing Date
ES487743A Expired ES487743A1 (es) 1979-02-23 1980-01-16 Procedimiento para la preparacion de un catalizador

Country Status (11)

Country Link
US (1) US4294726A (es)
JP (1) JPS5945416B2 (es)
BR (1) BR8001015A (es)
CA (1) CA1125265A (es)
DE (1) DE2907106C2 (es)
ES (1) ES487743A1 (es)
FR (1) FR2449475B1 (es)
GB (1) GB2048101B (es)
IT (1) IT1133053B (es)
SE (1) SE445302B (es)
SU (1) SU1170958A3 (es)

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Also Published As

Publication number Publication date
JPS5945416B2 (ja) 1984-11-06
DE2907106A1 (de) 1980-09-04
US4294726A (en) 1981-10-13
GB2048101A (en) 1980-12-10
SU1170958A3 (ru) 1985-07-30
FR2449475B1 (fr) 1986-05-16
DE2907106C2 (de) 1985-12-19
SE8001370L (sv) 1980-10-06
CA1125265A (en) 1982-06-08
SE445302B (sv) 1986-06-16
FR2449475A1 (fr) 1980-09-19
BR8001015A (pt) 1980-10-29
GB2048101B (en) 1983-04-20
IT8067131A0 (it) 1980-01-30
JPS55157327A (en) 1980-12-08
IT1133053B (it) 1986-07-09

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