DE2225232C3 - Zweischicht-Katalysatoranordnung zur Reinigung von Kraftfahrzeugabgasen - Google Patents

Zweischicht-Katalysatoranordnung zur Reinigung von Kraftfahrzeugabgasen

Info

Publication number
DE2225232C3
DE2225232C3 DE2225232A DE2225232A DE2225232C3 DE 2225232 C3 DE2225232 C3 DE 2225232C3 DE 2225232 A DE2225232 A DE 2225232A DE 2225232 A DE2225232 A DE 2225232A DE 2225232 C3 DE2225232 C3 DE 2225232C3
Authority
DE
Germany
Prior art keywords
catalyst
weight
layer
percent
platinum
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
DE2225232A
Other languages
German (de)
English (en)
Other versions
DE2225232A1 (de
DE2225232B2 (de
Inventor
Harutoki Takatsuki Nakamura
Jun Kyoto Yagi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE2225232A1 publication Critical patent/DE2225232A1/de
Publication of DE2225232B2 publication Critical patent/DE2225232B2/de
Application granted granted Critical
Publication of DE2225232C3 publication Critical patent/DE2225232C3/de
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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • 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
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/02—Lead
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Incineration Of Waste (AREA)
DE2225232A 1971-05-27 1972-05-24 Zweischicht-Katalysatoranordnung zur Reinigung von Kraftfahrzeugabgasen Expired DE2225232C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46036487A JPS517245B1 (en:Method) 1971-05-27 1971-05-27

Publications (3)

Publication Number Publication Date
DE2225232A1 DE2225232A1 (de) 1972-12-07
DE2225232B2 DE2225232B2 (de) 1974-07-11
DE2225232C3 true DE2225232C3 (de) 1975-03-06

Family

ID=12471166

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2225232A Expired DE2225232C3 (de) 1971-05-27 1972-05-24 Zweischicht-Katalysatoranordnung zur Reinigung von Kraftfahrzeugabgasen

Country Status (7)

Country Link
JP (1) JPS517245B1 (en:Method)
CA (1) CA953515A (en:Method)
DE (1) DE2225232C3 (en:Method)
FR (1) FR2139152B1 (en:Method)
GB (1) GB1372806A (en:Method)
IT (1) IT958098B (en:Method)
NL (1) NL151164B (en:Method)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101026A1 (de) * 1981-01-15 1982-08-26 Engelhard Kali-Chemie Autocat Gmbh, 3000 Hannover Bifunktionaler filter zur behandlung von abgasen
EP0611594A1 (de) * 1993-02-17 1994-08-24 Siemens Aktiengesellschaft Katalysator zur Umsetzung von Reaktanten eines Gasgemisches
RU2587326C2 (ru) 2010-12-09 2016-06-20 Торэй Индастриз, Инк. Биоразлагаемые частицы, материал для окклюзии сосудов и способ получения биоразлагаемых частиц

Also Published As

Publication number Publication date
DE2225232A1 (de) 1972-12-07
NL7207124A (en:Method) 1972-11-29
DE2225232B2 (de) 1974-07-11
FR2139152A1 (en:Method) 1973-01-05
CA953515A (en) 1974-08-27
IT958098B (it) 1973-10-20
GB1372806A (en) 1974-11-06
FR2139152B1 (en:Method) 1973-07-13
JPS517245B1 (en:Method) 1976-03-06
NL151164B (nl) 1976-10-15

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EF Willingness to grant licences