KR860008798A - 배기가스 정화용 촉매 - Google Patents

배기가스 정화용 촉매 Download PDF

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Publication number
KR860008798A
KR860008798A KR1019860004045A KR860004045A KR860008798A KR 860008798 A KR860008798 A KR 860008798A KR 1019860004045 A KR1019860004045 A KR 1019860004045A KR 860004045 A KR860004045 A KR 860004045A KR 860008798 A KR860008798 A KR 860008798A
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South Korea
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catalyst
deposited
alumina
activated alumina
rhodium
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KR1019860004045A
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English (en)
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KR910004071B1 (ko
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도모히사 오오하따
도모히사 오오하다
사다오 데루이
에이이찌 시라이시
Original Assignee
닛뽕 쇼꾸바이 가가꾸 고오교 가부시끼가이샤
나까지마 미쓰루
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Publication of KR860008798A publication Critical patent/KR860008798A/ko
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    • 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
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • 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

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  • 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)

Abstract

내용 없음

Description

배기가스 정화용 촉매
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (25)

  1. 수불용성 세륨 화합물을 수용성 알루미늄 화합물 및 알루미나 수화물의 군에서 선택된 일종이상의 화합물로 포화시키고, 포화생성물을 가소시킴으로써 수득된 알루미나-변형산화세륨, 백금, 팔라듐 및 로듐의 군에서 선택된 일종 이상의 귀금속 및 활성알루미나를 함유하는 촉매조성물을 단일체 벌집형 담체에 증착시킨 배기가스 정화용 촉매.
  2. 제1항에 있어서, 귀금속이 활성 알루미나 및 알루미나-변형 산화세륨의 군에서 선택된 일종이상의 분말에 미리분산 및 증착된 촉매.
  3. 제2항에 있어서, 귀금속이 활성알루미나에 미리 분산 및 증착된 촉매.
  4. 제2항에 있어서, 귀금속이 알루미나-변형 산화세륨에 미리 분산 및 증착된 촉매.
  5. 제2항에 있어서, 귀금속이 알루미나-변형산화 세륨 및 활성알루미나에 미리 분산 및 증착된 촉매.
  6. 제1항에 있어서, 알루미나-변형 산화세륨에서 알루미늄에 대한 세륨의 원자비 Ce/A1가 1∼20인 촉매.
  7. 제1항에 있어서, 수불용성세륨 화합물이 탄산세륨, 산화세륨 및 수산화 세륨의 군에서 선택된 촉매.
  8. 제1항에 있어서, 세륨 화합물이 탄산 세륨인 촉매.
  9. 제1항에 있어서, 수용성 알루미늄 화합물이 질산 알루미늄, 염화알루미늄 및 황산알루미늄의 군에서 선택된 촉매.
  10. 제1항에 있어서, 수용성 알루미늄 화합물이 질산 알루미늄인 촉매.
  11. 제1항에 있어서, 활성 알루미나가 50∼180㎡/g의 비표면을 갖는 촉매.
  12. 제1항에 있어서, 촉매 1ℓ당 촉매에 증착된 20∼200g의 활성 알루미나, 10∼150g의 알루미나-변형 산화세륨, 합계 0.1∼5g의 백금 및 팔라듐 및 0.01∼1g의 로듐을 함유하는 촉매.
  13. 제3항에 있어서, 로듐이 활성 알루미나에 미리 분산 및 증착된 촉매.
  14. 제13항에 있어서, 로듐이 활성 알루미나에 미리 분산 및 증착되고, 백금 및 팔라듐의 군에서 선택된 일종 이상의 귀금속이 이어서 로듐-함유 활성 알루미나에 분산 및 증착된 촉매.
  15. 제3항에 있어서, 백금 및 팔라듐의 군에서 선택된 일종이상의 귀금속이 미리 분산 및 증착된 촉매.
  16. 제15항에 있어서, 백금 및 팔라듐의 군에서 선택된 일종 이상의 귀금속이 미리 활성 알루미나에 분산 및 증착되고, 로듐이 이어서 귀금속-함유 활성 알루미나에 분산 및 증착된 촉매.
  17. 제3항에 있어서, 백금, 팔라듐 및 로듐이 미리 활성 알루미나에 분산 및 증착된 촉매.
  18. 제4항에 있어서, 로듐이 미리 알루미나-변형 산화 세륨에 분산 및 증착된 촉매.
  19. 제18항에 있어서, 로듐을 미리 알루미나-변형 산화 세륨에 분산 및 증착시키고, 수득된 로듐-함유 산화 세륨을 활성알루미나 및 백금 및 팔라듐의 군에서 선택된 일종이상의 귀금속과 혼합한 촉매.
  20. 제18항에 있어서, 로듐이 미리 알루미나-변형 산화세륨에 분산 및 증착되고, 백금 및 팔라듐의 군에서 선택된 일종이상의 귀금속이 미리 활성알루미나에 분산 및 증착된 촉매.
  21. 제2항에 있어서, 백금 및 팔라듐의 군에서 선택된 일종이상의 귀금속이 다염기성 카르복실산이 배합된 포화액체의 매질을 통해 분말에 단단히 분산 및 증착된 촉매.
  22. 제21항에 있어서, 분말이 활성알루미나인 촉매.
  23. 제22항에 있어서, 다염기성 카르복실산을 100g의 활성알루미나를 기준으로 0.1∼30g양으로 가한 촉매.
  24. 제21항에 있어서, 다염기성 카르복실산이 옥살산인 촉매.
  25. 제21항에 있어서, 다염기성 카르복실산이 시트르산인 촉매.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019860004045A 1985-05-23 1986-05-23 배기가스 정화용 촉매 KR910004071B1 (ko)

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Application Number Priority Date Filing Date Title
JP109372 1985-05-23
JP10937285 1985-05-23
JP13778485 1985-06-26
JP137784 1985-06-26

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KR860008798A true KR860008798A (ko) 1986-12-18
KR910004071B1 KR910004071B1 (ko) 1991-06-22

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US (1) US4708946A (ko)
EP (1) EP0203525B1 (ko)
JP (1) JPS6291244A (ko)
KR (1) KR910004071B1 (ko)
AT (1) ATE52200T1 (ko)
DE (1) DE3670579D1 (ko)

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US20230129600A1 (en) * 2021-10-26 2023-04-27 Johnson Matthey Public Limited Company Polymaleic acid assisted metal nanoparticle synthesis for three-way catalysis application
CN114588894B (zh) * 2022-03-22 2023-06-16 中国科学院赣江创新研究院 一种铑基催化剂及其制备方法与应用

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US4708946A (en) 1987-11-24
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