KR880012864A - 자동차 배기가스 처리촉매 및 처리방법 - Google Patents

자동차 배기가스 처리촉매 및 처리방법 Download PDF

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KR880012864A
KR880012864A KR1019880004163A KR880004163A KR880012864A KR 880012864 A KR880012864 A KR 880012864A KR 1019880004163 A KR1019880004163 A KR 1019880004163A KR 880004163 A KR880004163 A KR 880004163A KR 880012864 A KR880012864 A KR 880012864A
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South Korea
Prior art keywords
exhaust gas
mole percent
catalyst
rare earth
earth metal
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KR1019880004163A
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English (en)
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KR910007170B1 (ko
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조병권
죠셉 스타크 크리스토퍼
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에이·디·하인즈
제너럴 모터즈 코오포레이션
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Publication of KR880012864A publication Critical patent/KR880012864A/ko
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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
    • 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
    • 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
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/908—O2-storage component incorporated in the catalyst
    • 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

Abstract

내용 없음

Description

자동차 배기가스 처리촉매 및 처리방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (7)

  1. 세리마를 포함하는 담체 입자들상에 한가지 이상의 귀금속이 부착되어 구성되는, 일산화탄소(CO) 및 산화질소(NO)를 함유하는 자동차 배기가스 처리촉매에 있어서, 담체 입자들이 80 내지 95 몰퍼센트의 세리아(CeO2)와 5 내지 20 몰퍼센트의 회토류금속 산화물(RE2O3)의 화확적 반응 고용체로부터 형성된 것임을 특징으로 하는 자동차 배기가스 처리촉매.
  2. 제 1 항에 있어서, 상기 귀금속이 백금, 로듐 또는 백금/로듐 혼합물을 특징으로 하는, 자동차 배기가스 처리촉매.
  3. 제 1 항 또는 제 2 항에 있어서, 상기 담체 입다들이 85 내지 90 몰퍼센트의 CeO2와 10 내지 15 몰퍼센트의 RE2O3의 화학적 반응 고용체로 구성된 것임을 특징으로 하는, 자동차 배기가스 처리촉매.
  4. 제 1 항 내지 3 항 중 어느 한 항에 있어서, 회토류 금속이 가돌리늄임을 특징으로 하는, 자동차 배기가스 처리촉매.
  5. 연료농후 조건 및 연료희박 조건 사이에서 엔진에 공기-연료 혼합물이 연속적으로 순환공급되는 탄화수소연료 내연기관의 작동으로부터 생성되는 배기가스를 세라믹 담체입자들 상에 한가지 이상의 귀금속들이 부착되어 구성된 촉매와 접촉시킴으로써 배기가스를 처리함에 있어서, 상기 담체입자들이 80 내지 95 몰퍼센트의 세리아(CeO2)와 5 내지 20 몰퍼센트의 회토류 금속 산화물 (RE2O3)의 화학적 반응 고용체로부터 형성된 것임을 특징으로 하는 탄화수소연료 내연기관 배기가스 처리방법.
  6. 제 5 항에 있어서, 상기 고용체가 85 내지 90 몰퍼센트의 세리아((CeO2)와 10 내지 15 몰퍼센트의 회토류 금속 산화물(RE2O3)로 구성된 혼합물로부터 형성된 것임을 특징으로 하는 탄화수소연료 내연기관 배기가스 처리방법.
  7. 제 5 항 또는 제 6 항에 있어서, 상기 회토류 금속(RE)이 가돌리늄임을 특징으로 하는 탄화수소연료 내연기관 배기가스 처리방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880004163A 1987-04-15 1988-04-13 자동차 배기가스 처리촉매 및 처리방법 KR910007170B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/038,717 US4839146A (en) 1987-04-15 1987-04-15 Catalyst for simultaneous NO decomposition and CO oxidation under cycled operating conditions
US038,717 1987-04-15
US38717 1987-04-15

Publications (2)

Publication Number Publication Date
KR880012864A true KR880012864A (ko) 1988-11-29
KR910007170B1 KR910007170B1 (ko) 1991-09-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880004163A KR910007170B1 (ko) 1987-04-15 1988-04-13 자동차 배기가스 처리촉매 및 처리방법

Country Status (7)

Country Link
US (1) US4839146A (ko)
EP (1) EP0287217B1 (ko)
JP (1) JPH0622676B2 (ko)
KR (1) KR910007170B1 (ko)
AU (1) AU609111B2 (ko)
CA (1) CA1310951C (ko)
DE (1) DE3878576T2 (ko)

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Also Published As

Publication number Publication date
CA1310951C (en) 1992-12-01
US4839146A (en) 1989-06-13
KR910007170B1 (ko) 1991-09-19
DE3878576D1 (de) 1993-04-01
EP0287217A2 (en) 1988-10-19
JPS63270543A (ja) 1988-11-08
EP0287217B1 (en) 1993-02-24
EP0287217A3 (en) 1990-12-27
AU1416388A (en) 1988-10-20
JPH0622676B2 (ja) 1994-03-30
DE3878576T2 (de) 1993-06-09
AU609111B2 (en) 1991-04-26

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