FI90501B - Förfarande för effektivering av en trefaskatalysators funktion - Google Patents

Förfarande för effektivering av en trefaskatalysators funktion Download PDF

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Publication number
FI90501B
FI90501B FI920620A FI920620A FI90501B FI 90501 B FI90501 B FI 90501B FI 920620 A FI920620 A FI 920620A FI 920620 A FI920620 A FI 920620A FI 90501 B FI90501 B FI 90501B
Authority
FI
Finland
Prior art keywords
cerium
catalyst
europium
phase
lanthanide group
Prior art date
Application number
FI920620A
Other languages
English (en)
Finnish (fi)
Other versions
FI920620A0 (sv
FI920620A (sv
FI90501C (sv
Inventor
Sointu Ravola
Eero Aitta
Original Assignee
Kemira Oy
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 Kemira Oy filed Critical Kemira Oy
Priority to FI920620A priority Critical patent/FI90501C/sv
Publication of FI920620A0 publication Critical patent/FI920620A0/sv
Priority to DE69316361T priority patent/DE69316361T2/de
Priority to PCT/FI1993/000048 priority patent/WO1993015834A1/en
Priority to EP93904048A priority patent/EP0644800B1/en
Publication of FI920620A publication Critical patent/FI920620A/sv
Application granted granted Critical
Publication of FI90501B publication Critical patent/FI90501B/sv
Publication of FI90501C publication Critical patent/FI90501C/sv

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
    • B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • 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
    • 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)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Claims (5)

1. Förfarande för effektivering av en trefaskatalysa-tors funktion, vars stödfas innehäller alu-miniumoxid och cerium kännetecknatav att tili stödfasen tillsätts för förbättring av ceriumets syrebindningsförmäga följande tili lantanidgruppen hörande ämnen: europium, terbium, ytterbium e Her praseodym.
2. Förfarande enligt patentkravet 1 kännetecknat av att förfarandet omfattar ett upphettningsskede, där det bildas en blandoxid mellan cerium och det anförda tili lantanidgruppen hörande ämnet.
3. Förfarande enligt patentkravet 2 kännetecknat av att tillsats i form av en blandoxid tili stödfasen utförs efter upphett-ningsskedet.
4. Förfarande enligt patentkravet 3 kännetecknat av att tillsats före upp-hettningsskedet utförs i form av en lösning eller ett sait innehällande det anförda tili lantanidgruppen hörande ämnet.
5. Förfarande enligt patentkravet 4 kännetecknat av att den anförda lös-ningen är vattenlösning av nitratet som bildats av det anförda tili lantanidgruppen hörande ämnet och det anförda saltet är nitratet som bildats av det anförda tili lantanidgruppen hörande ämnet. 1 Förfarande enligt patentkravet 1 kännetecknat av att halten av det anförda tili lantanidgruppen hörande ämnet i stödfasen är under 10 % av mängden cerium.
FI920620A 1992-02-13 1992-02-13 Förfarande för effektivering av en trefaskatalysators funktion FI90501C (sv)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI920620A FI90501C (sv) 1992-02-13 1992-02-13 Förfarande för effektivering av en trefaskatalysators funktion
DE69316361T DE69316361T2 (de) 1992-02-13 1993-02-12 Träger für einen dreiwegkatalysator und methode zur dessen herstellung
PCT/FI1993/000048 WO1993015834A1 (en) 1992-02-13 1993-02-12 Support of a three-way catalyst and method of producing the same
EP93904048A EP0644800B1 (en) 1992-02-13 1993-02-12 Support of a three-way catalyst and method of producing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI920620A FI90501C (sv) 1992-02-13 1992-02-13 Förfarande för effektivering av en trefaskatalysators funktion
FI920620 1992-02-13

Publications (4)

Publication Number Publication Date
FI920620A0 FI920620A0 (sv) 1992-02-13
FI920620A FI920620A (sv) 1993-08-14
FI90501B true FI90501B (sv) 1993-11-15
FI90501C FI90501C (sv) 1994-02-25

Family

ID=8534599

Family Applications (1)

Application Number Title Priority Date Filing Date
FI920620A FI90501C (sv) 1992-02-13 1992-02-13 Förfarande för effektivering av en trefaskatalysators funktion

Country Status (4)

Country Link
EP (1) EP0644800B1 (sv)
DE (1) DE69316361T2 (sv)
FI (1) FI90501C (sv)
WO (1) WO1993015834A1 (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423293B1 (en) * 1996-09-06 2002-07-23 Ford Global Technologies, Inc. Oxygen storage material for automotive catalysts and process of using
US6107240A (en) * 1997-03-26 2000-08-22 Engelhard Corporation Catalyst composition containing an intimately mixed oxide of cerium and praseodymium
DE19714707A1 (de) * 1997-04-09 1998-10-15 Degussa Sauerstoff speicherndes Material mit hoher Temperaturstabilität sowie Verfahren zu seiner Herstellung
US6576200B1 (en) 1998-08-28 2003-06-10 Daihatsu Motor Co., Ltd. Catalytic converter for automotive pollution control, and oxygen-storing complex oxide used therefor
WO2000025898A2 (en) * 1998-11-02 2000-05-11 Arizona Board Of Regents Compositions, methods and devices for the production of oxygen and hydrogen
US20020032123A1 (en) 2000-02-23 2002-03-14 Ford Global Technologies, Inc. Exhaust gas catalyst and method of manufacturing same
US6492297B1 (en) 2000-09-15 2002-12-10 Engelhard Corporation Catalyst composition for purifying exhaust gas

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1437216A (en) * 1972-08-04 1976-05-26 Engelhard Min & Chem Oxidation of carbonaceous material
CA1213874A (en) * 1983-05-12 1986-11-12 Tomohisa Ohata Process for producing honeycomb catalyst for exhaust gas conversion
JPH0675676B2 (ja) * 1986-12-24 1994-09-28 トヨタ自動車株式会社 排気ガス浄化用触媒
JPH0644999B2 (ja) * 1988-04-30 1994-06-15 株式会社豊田中央研究所 排気ガス浄化用触媒

Also Published As

Publication number Publication date
FI920620A0 (sv) 1992-02-13
EP0644800A1 (en) 1995-03-29
DE69316361T2 (de) 1998-04-30
EP0644800B1 (en) 1998-01-14
WO1993015834A1 (en) 1993-08-19
DE69316361D1 (de) 1998-02-19
FI920620A (sv) 1993-08-14
FI90501C (sv) 1994-02-25

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