FR2241339A1 - Single catalysts for exhaust gas purifcn - contg. ruthenium metal or oxide and gp. IIA metal oxide on inert carrier - Google Patents

Single catalysts for exhaust gas purifcn - contg. ruthenium metal or oxide and gp. IIA metal oxide on inert carrier

Info

Publication number
FR2241339A1
FR2241339A1 FR7422963A FR7422963A FR2241339A1 FR 2241339 A1 FR2241339 A1 FR 2241339A1 FR 7422963 A FR7422963 A FR 7422963A FR 7422963 A FR7422963 A FR 7422963A FR 2241339 A1 FR2241339 A1 FR 2241339A1
Authority
FR
France
Prior art keywords
oxide
contg
pref
metal oxide
purifcn
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.)
Granted
Application number
FR7422963A
Other languages
French (fr)
Other versions
FR2241339B1 (en
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 GB31724/73A external-priority patent/GB1482516A/en
Application filed by Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of FR2241339A1 publication Critical patent/FR2241339A1/en
Application granted granted Critical
Publication of FR2241339B1 publication Critical patent/FR2241339B1/fr
Granted legal-status Critical Current

Links

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
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/462—Ruthenium
    • 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
    • B01J23/48—Silver or gold
    • 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
    • B01J23/58—Platinum group metals with alkali- or alkaline earth 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
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0244—Coatings comprising several layers
    • 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
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • 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

Catalysts of Ru of its alloys or dioxide, and a metal oxide capable of forming a stable mixed oxide (ruthenite) with RuO2. The metal oxide is from Group II A, pref. Mg, Ca, Sr or Ba oxide. The Ru is pref. used as an alloy of 5-75 (35) wT. % Ru and 25-95 (65) wt. % Pt. The catalyst is applied to a carrier, pref. a refractory ceramic honeycomb type. The catalyst is used for the oxidn. of and hydrocarbons and reduction of NO in exhaust gases from engines using approx. stoichiometric fuel/air ratios, in a single stage. Also for other catalytic processes using Ru, eg. methanisation. Fischer-Tropf reaction, steam-reforming of naphtha and ammonia synthesis. Better stability at high temps. than known catalysts contg. Ru or its alloys, which lose Ru by volatilisation.
FR7422963A 1973-07-03 1974-07-02 Single catalysts for exhaust gas purifcn - contg. ruthenium metal or oxide and gp. IIA metal oxide on inert carrier Granted FR2241339A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB31724/73A GB1482516A (en) 1973-07-03 1973-07-03 Catalysts
GB3959973 1973-08-15
GB3927773 1973-08-20

Publications (2)

Publication Number Publication Date
FR2241339A1 true FR2241339A1 (en) 1975-03-21
FR2241339B1 FR2241339B1 (en) 1980-06-06

Family

ID=27258999

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7422963A Granted FR2241339A1 (en) 1973-07-03 1974-07-02 Single catalysts for exhaust gas purifcn - contg. ruthenium metal or oxide and gp. IIA metal oxide on inert carrier

Country Status (3)

Country Link
JP (1) JPS5752097B2 (en)
DE (1) DE2431768A1 (en)
FR (1) FR2241339A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59204145A (en) * 1983-05-02 1984-11-19 Toa Nenryo Kogyo Kk Production of carbonyl compound
US4977129A (en) * 1989-03-13 1990-12-11 W. R Grace & Co.-Conn. Auto exhaust catalyst composition having low H2 S emissions and method of making the catalyst
DE19803888A1 (en) * 1998-01-31 1999-08-05 Bayer Ag Process for the preparation of ruthenium-containing catalysts and their use in hydrogenations
KR102218986B1 (en) * 2019-06-17 2021-02-22 희성촉매 주식회사 Thermally stable Ru composites and its use as NSR catalysts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245607A1 (en) * 1972-09-16 1974-03-28 Heraeus Gmbh W C Catalyst for exhaust gas purifcn - contg oxide mixts with platinum group metals
US3819536A (en) * 1972-12-26 1974-06-25 Ford Motor Co Process for preparing a catalyst based on ruthenium
US3835069A (en) * 1972-12-26 1974-09-10 Ford Motor Co Ruthenium catalyst system
JPS548198B2 (en) * 1973-03-20 1979-04-13
JPS5018380A (en) * 1973-06-22 1975-02-26

Also Published As

Publication number Publication date
JPS5752097B2 (en) 1982-11-05
DE2431768A1 (en) 1975-01-30
JPS5049184A (en) 1975-05-01
FR2241339B1 (en) 1980-06-06

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