FI95666B - Platinafri katalysator och förfarande för framställning av den - Google Patents

Platinafri katalysator och förfarande för framställning av den Download PDF

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Publication number
FI95666B
FI95666B FI884977A FI884977A FI95666B FI 95666 B FI95666 B FI 95666B FI 884977 A FI884977 A FI 884977A FI 884977 A FI884977 A FI 884977A FI 95666 B FI95666 B FI 95666B
Authority
FI
Finland
Prior art keywords
catalyst
alumina
cerium
oxide
layer
Prior art date
Application number
FI884977A
Other languages
English (en)
Finnish (fi)
Other versions
FI884977A (sv
FI884977A0 (sv
FI95666C (sv
Inventor
Bernd Engler
Edgar Koberstein
Rainer Domesle
Herbert Voelker
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of FI884977A0 publication Critical patent/FI884977A0/sv
Publication of FI884977A publication Critical patent/FI884977A/sv
Publication of FI95666B publication Critical patent/FI95666B/sv
Application granted granted Critical
Publication of FI95666C publication Critical patent/FI95666C/sv

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Classifications

    • 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
    • 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
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8933—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/894—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Glass Compositions (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (8)

1. Platinafri katalysator med en honungscellformed Inert, keramlsk eller metallisk barare, ett överdrag av 5 aluminiumoxid ur övergängsserien, en pä skiktets yta an-bragt aktiv fas bestäende av 0,03 - 3 vikt-% palladium och rodium, varvid viktförhällandet me11an dessa bäda ädelme-taller är 1:1 - 20:1, samt 25 - 50 vikt-% ceriumdioxid, varvid viktmängdema av ädelmetall, ceriumdioxid och alu-10 miniumoxid tillsammans utgör 100 vikt-%, kanne- t e c k n a d därav, att överdraget är skiktartat, varvid det första undre skiktet innehäller palladium och ceriumdioxid, och det andra Övre skiktet innehäller rodium och ceriumdioxid.
2. Katalysator enligt patentkrav 1, kanne- t e c k n a d därav, att högst 20 vikt-% av aluminiumoxi-den är ersatt med promotorerna zirkoniumdioxid, lantanoxid La203, neodymoxid Nd203, praseodymoxid Pr60n och/eller nickeloxid NiO.
3. Katalysator enligt patentkrav 1 eller 2, k ä n- netecknad därav, att aluminiumoxidgittret är för-stabiliserat med jordalkalimetalloxid, kiseldioxid, zirkoniumdioxid eller med sällsynta jordartsmetalloxider pä ett i och för sig känt sätt. 25
4. Förfarande för framställning av en katalysator - “ enligt patentkraven 1-3, kännetecknat -där- av, att man överdrager en inert bärare med en vattendis-persion av aluminiumoxid som innehäller en löslig och/-eller olöslig ceriumförening samt eventuellt föreningar av 30 promotorelementen, torkar och glödgar detta första skikt i luft vid 300 - 950 °C, samt impregnerar detta första skikt med en vattenlösning av palladiumsalt, torkar och glödgar eventuellt emellan, framställer pä motsvarande sätt ett annat cerium och eventuellt promotorer innehällande alu-35 miniumoxidskikt och impregnerar detta andra aluminiumoxid- • * 95666 skikt med en vattenlösning av rodiumsalt, torkar och glöd-gar till slut de ädelmetallhaltiga skikten vid temperatu-rer över 250 *C, eventuellt i en väte innehällande gas-ström.
5 5. Förfarande enligt patentkrav 4, känne- t e c k n a t därav, att ceriumdioxiden införes som ce-rium(III)acetat.
6. Förfarande enligt patentkrav 4 eller 5, k & n -netecknat därav, att man använder aluminiumoxid 10 som är förstabiliserad med jordalkalimetalloxid, kisel-dioxid, zirkoniumdioxid eller med sällsynta jordartsme-talloxider pä ett i och för sig känt sätt.
7. Förfarande enligt patentkraven 4-6, k ä n -netecknat därav, att glödgningen av de ädelme- 15 tallhaltiga skikten sker i en väte innehällande gasström.
8. Användning av en av en katalysator enligt patentkraven 1 - 3 tili samtidig konvertering av kolmonoxid, kolväten och kväveoxid hos avgaser frän förbränningsmoto-rer. »«<
FI884977A 1987-10-30 1988-10-28 Platinafri katalysator och förfarande för framställning av den FI95666C (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3736811 1987-10-30
DE3736811 1987-10-30

Publications (4)

Publication Number Publication Date
FI884977A0 FI884977A0 (sv) 1988-10-28
FI884977A FI884977A (sv) 1989-05-01
FI95666B true FI95666B (sv) 1995-11-30
FI95666C FI95666C (sv) 1996-03-11

Family

ID=6339426

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884977A FI95666C (sv) 1987-10-30 1988-10-28 Platinafri katalysator och förfarande för framställning av den

Country Status (17)

Country Link
US (1) US5013705A (sv)
EP (1) EP0314058B1 (sv)
JP (1) JP2553167B2 (sv)
KR (1) KR970000296B1 (sv)
CN (1) CN1010282B (sv)
AT (1) ATE78717T1 (sv)
AU (1) AU605641B2 (sv)
BR (1) BR8805564A (sv)
CA (1) CA1324373C (sv)
DE (1) DE3873258D1 (sv)
ES (1) ES2042687T3 (sv)
FI (1) FI95666C (sv)
GR (1) GR3005970T3 (sv)
HU (1) HU200710B (sv)
MX (1) MX169970B (sv)
NO (1) NO178721C (sv)
PT (1) PT88897B (sv)

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Also Published As

Publication number Publication date
CN1032748A (zh) 1989-05-10
GR3005970T3 (sv) 1993-06-07
AU2439988A (en) 1989-05-04
JP2553167B2 (ja) 1996-11-13
KR970000296B1 (ko) 1997-01-08
BR8805564A (pt) 1989-07-11
FI884977A (sv) 1989-05-01
HU200710B (en) 1990-08-28
MX169970B (es) 1993-08-03
NO884815L (no) 1989-05-02
FI884977A0 (sv) 1988-10-28
ES2042687T3 (es) 1993-12-16
US5013705A (en) 1991-05-07
CN1010282B (zh) 1990-11-07
AU605641B2 (en) 1991-01-17
CA1324373C (en) 1993-11-16
JPH01143641A (ja) 1989-06-06
NO178721C (no) 1996-05-22
ATE78717T1 (de) 1992-08-15
NO178721B (no) 1996-02-12
KR890006290A (ko) 1989-06-12
HUT48486A (en) 1989-06-28
PT88897B (pt) 1993-01-29
DE3873258D1 (de) 1992-09-03
NO884815D0 (no) 1988-10-28
EP0314058B1 (de) 1992-07-29
EP0314058A1 (de) 1989-05-03
FI95666C (sv) 1996-03-11

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