DE69023437T2 - Verfahren zur katalytische Reduzierung von Stickstoffoxyden aus Abgasen. - Google Patents

Verfahren zur katalytische Reduzierung von Stickstoffoxyden aus Abgasen.

Info

Publication number
DE69023437T2
DE69023437T2 DE69023437T DE69023437T DE69023437T2 DE 69023437 T2 DE69023437 T2 DE 69023437T2 DE 69023437 T DE69023437 T DE 69023437T DE 69023437 T DE69023437 T DE 69023437T DE 69023437 T2 DE69023437 T2 DE 69023437T2
Authority
DE
Germany
Prior art keywords
exhaust gases
nitrogen oxides
catalytic reduction
catalytic
reduction
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 - Fee Related
Application number
DE69023437T
Other languages
English (en)
Other versions
DE69023437D1 (de
Inventor
Senshi Kasahara
Katumi Kamiyama
Kazushige Igawa
Shinichi Matsumoto
Masayuki Fukui
Tadashi Suzuki
Shiroh Kondoh
Koji Yokota
Shinichi Takeshima
Kazunobu Ishibashi
Masao Nakano
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.)
Tosoh Corp
Toyota Motor Corp
Toyota Central R&D Labs Inc
Original Assignee
Tosoh Corp
Toyota Motor Corp
Toyota Central R&D Labs Inc
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
Priority claimed from JP1225796A external-priority patent/JP3044622B2/ja
Priority claimed from JP1269637A external-priority patent/JP2621998B2/ja
Priority claimed from JP1275369A external-priority patent/JP2936416B2/ja
Priority claimed from JP1340530A external-priority patent/JP2562702B2/ja
Application filed by Tosoh Corp, Toyota Motor Corp, Toyota Central R&D Labs Inc filed Critical Tosoh Corp
Application granted granted Critical
Publication of DE69023437D1 publication Critical patent/DE69023437D1/de
Publication of DE69023437T2 publication Critical patent/DE69023437T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
    • B01J29/072—Iron group metals or copper
    • 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)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
DE69023437T 1989-08-31 1990-08-30 Verfahren zur katalytische Reduzierung von Stickstoffoxyden aus Abgasen. Expired - Fee Related DE69023437T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1225796A JP3044622B2 (ja) 1989-08-31 1989-08-31 排ガス浄化法
JP1269637A JP2621998B2 (ja) 1989-10-16 1989-10-16 排気ガス浄化用触媒
JP1275369A JP2936416B2 (ja) 1989-10-23 1989-10-23 排気ガスの浄化方法
JP1340530A JP2562702B2 (ja) 1989-12-27 1989-12-27 排気ガス浄化用触媒

Publications (2)

Publication Number Publication Date
DE69023437D1 DE69023437D1 (de) 1995-12-14
DE69023437T2 true DE69023437T2 (de) 1996-04-18

Family

ID=27477191

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69023437T Expired - Fee Related DE69023437T2 (de) 1989-08-31 1990-08-30 Verfahren zur katalytische Reduzierung von Stickstoffoxyden aus Abgasen.
DE69025632T Expired - Fee Related DE69025632T2 (de) 1989-08-31 1990-08-30 Verfahren zur Reduzierung von Stickstoffoxyden aus Abgasen

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69025632T Expired - Fee Related DE69025632T2 (de) 1989-08-31 1990-08-30 Verfahren zur Reduzierung von Stickstoffoxyden aus Abgasen

Country Status (4)

Country Link
US (1) US5270024A (de)
EP (2) EP0415410B1 (de)
CA (1) CA2024154C (de)
DE (2) DE69023437T2 (de)

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US5270024A (en) 1993-12-14
EP0415410A1 (de) 1991-03-06
DE69023437D1 (de) 1995-12-14
DE69025632T2 (de) 1996-08-14
CA2024154C (en) 1995-02-14
EP0555889B1 (de) 1996-02-28
AU6137890A (en) 1991-05-23
EP0555889A1 (de) 1993-08-18
DE69025632D1 (de) 1996-04-04
AU627924B2 (en) 1992-09-03
EP0415410B1 (de) 1995-11-08
CA2024154A1 (en) 1991-03-01

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