IT977923B - Procedimento per la preparazione di catalizzatori per la depura zione dei gas di scarico - Google Patents

Procedimento per la preparazione di catalizzatori per la depura zione dei gas di scarico

Info

Publication number
IT977923B
IT977923B IT67527/73A IT6752773A IT977923B IT 977923 B IT977923 B IT 977923B IT 67527/73 A IT67527/73 A IT 67527/73A IT 6752773 A IT6752773 A IT 6752773A IT 977923 B IT977923 B IT 977923B
Authority
IT
Italy
Prior art keywords
catalysts
purification
procedure
preparation
exhaust gases
Prior art date
Application number
IT67527/73A
Other languages
English (en)
Italian (it)
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Application granted granted Critical
Publication of IT977923B publication Critical patent/IT977923B/it

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
    • B01J23/38—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
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • B01J23/6522—Chromium
    • 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
    • B01J23/8993—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 with chromium, molybdenum or tungsten
    • 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)
  • 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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
IT67527/73A 1972-03-25 1973-02-28 Procedimento per la preparazione di catalizzatori per la depura zione dei gas di scarico IT977923B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2214604A DE2214604C3 (de) 1972-03-25 1972-03-25 Verfahren zur Herstellung verbesserter Abgasreinigungs-Katalysatoren

Publications (1)

Publication Number Publication Date
IT977923B true IT977923B (it) 1974-09-20

Family

ID=5840129

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67527/73A IT977923B (it) 1972-03-25 1973-02-28 Procedimento per la preparazione di catalizzatori per la depura zione dei gas di scarico

Country Status (7)

Country Link
JP (1) JPS5547932B2 (hu)
CA (1) CA1000934A (hu)
DE (1) DE2214604C3 (hu)
FR (1) FR2177951B1 (hu)
GB (1) GB1420992A (hu)
IT (1) IT977923B (hu)
SE (1) SE392221B (hu)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966790A (en) * 1973-12-10 1976-06-29 Engelhard Minerals & Chemicals Corporation Compositions and methods for high temperature stable catalysts
US4085193A (en) * 1973-12-12 1978-04-18 Mitsubishi Petrochemical Co. Ltd. Catalytic process for reducing nitrogen oxides to nitrogen
FR2293965A1 (fr) * 1974-12-13 1976-07-09 Oxycatalyse Ste Fse Purification des gaz d'echappement des moteurs a explosion ou a combustion interne
CA1067060A (en) * 1975-08-25 1979-11-27 Mordecai Shelef Equilibrium catalyst
MX4509E (es) * 1975-08-27 1982-06-02 Engelhard Min & Chem Composicion catalitica mejorada para oxidar en forma simultanea hidrocarburos gascosos y monoxido de carbono y reducir oxidos de nitrogeno
JPS5261192A (en) * 1975-11-17 1977-05-20 Ngk Insulators Ltd Ceramic honeycomb catalysts
JPS6115567U (ja) * 1984-07-04 1986-01-29 アレック電子株式会社 三次元電磁流速計
DE3502866A1 (de) * 1984-09-19 1986-03-20 Klaus Prof. Dr.rer.nat. 4430 Steinfurt Mangold Zweistufen-verfahren und vorrichtung zur reinigung von verbrennungsgasen
JPS61138537A (ja) * 1984-12-11 1986-06-26 Nikki Universal Co Ltd 水素化脱硫触媒の製造方法
JPS61291026A (ja) * 1985-06-17 1986-12-20 Hitachi Ltd 窒素酸化物と一酸化炭素とを同時に除去する方法
DE3523205A1 (de) * 1985-06-28 1987-01-02 Bayer Ag Traegerkatalysator, verfahren zu seiner herstellung sowie dessen verwendung zur herstellung von hydroxydiphenyl
US5198403A (en) * 1989-02-28 1993-03-30 Degussa Ag Process for producing a catalyst for selective reduction of nitrous oxides with ammonia
GB9020568D0 (en) * 1990-09-20 1990-10-31 Rover Group Supported palladium catalysts

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1378393A (fr) * 1963-12-03 1964-11-13 Grace W R & Co Catalyseurs pour le traitement de gaz d'échappement de moteurs à combustion interne et procédé pour leur préparation

Also Published As

Publication number Publication date
FR2177951B1 (hu) 1978-08-04
JPS497186A (hu) 1974-01-22
SE392221B (sv) 1977-03-21
CA1000934A (en) 1976-12-07
JPS5547932B2 (hu) 1980-12-03
DE2214604B2 (de) 1974-11-07
FR2177951A1 (hu) 1973-11-09
DE2214604A1 (de) 1973-10-11
DE2214604C3 (de) 1975-06-12
GB1420992A (en) 1976-01-14

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