ES2138054T3 - Procedimiento de sintesis de composiciones a base de oxidos mixtos de circonio y de cerio. - Google Patents

Procedimiento de sintesis de composiciones a base de oxidos mixtos de circonio y de cerio.

Info

Publication number
ES2138054T3
ES2138054T3 ES94400235T ES94400235T ES2138054T3 ES 2138054 T3 ES2138054 T3 ES 2138054T3 ES 94400235 T ES94400235 T ES 94400235T ES 94400235 T ES94400235 T ES 94400235T ES 2138054 T3 ES2138054 T3 ES 2138054T3
Authority
ES
Spain
Prior art keywords
sol
pref
compsn
compositions based
oxide
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 - Lifetime
Application number
ES94400235T
Other languages
English (en)
Inventor
Thierry Chopin
Gabriel Vilmin
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.)
Rhodia Chimie SAS
Original Assignee
Rhodia Chimie SAS
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9443900&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2138054(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rhodia Chimie SAS filed Critical Rhodia Chimie SAS
Application granted granted Critical
Publication of ES2138054T3 publication Critical patent/ES2138054T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
    • 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
    • B01D53/92—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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • 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
    • 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
    • B01J37/0242—Coating followed by impregnation
    • 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
    • B01J37/03—Precipitation; Co-precipitation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/40—Mixed oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

LA INVENCION SE REFIERE A UN PROCESO PARA LA OBTENCION DE COMPOSICIONES A BASE DE OXIDOS MIXTOS DE ZIRCONIO Y DE CERIO QUE PRESENTAN SUPERFICIES ESPECIFICAS ELEVADAS Y TERMICAMENTE ESTABLES, CARACTERIZANDOSE DICHO PROCESO EN QUE COMPRENDE LAS SIGUIENTES ETAPAS: (I) SE MEZCLA, EN LAS PROPORCIONES ESTOQUIOMETRICAS QUE CORRESPONDEN A LAS DE LA COMPOSICION FINAL DESEADA, UN SOL DE ZIRCONIO POR UNA PARTE Y UN SOL DE CERIO POR OTRA PARTE, SIENDO LA RELACION R ENTRE EL DIAMETRO MEDIO R1 DE LAS PARTICULAS QUE CONSTITUYEN EL SOL DE ZIRCONIO Y EL DIAMETRO R2 DE LAS PARTICULAS QUE CONSTITUYEN EL SOL DE CERIO AL MENOS 5, (II) SE AÑADE UNA BASE EN LA MEZCLA ASI OBTENIDA, (III) SE RECUPERA EL PRECIPITADO ASI FORMADO Y POR FIN (IV) SE CALCINA EL PRECIPITADO ASI RECUPERADO. LA INVENCION SE REFIERE TAMBIEN A LAS COMPOSICIONES A BASE DE OXIDOS MIXTOS DE GRANDES SUPERFICIES ESPECIFICAS (> 10 M2/G) SUSCEPTIBLES DE SER OBTENIDAS, ASI COMO A SUS USOS EN TANTO QUE, O PARA LA FABRICACION DE CATALIZADORES Y/O SOPORTES DE CATALIZADORES, EN PARTICULAR EN EL CAMPO DE LA POSTCOMBUSTION AUTOMOVIL.
ES94400235T 1993-02-10 1994-02-04 Procedimiento de sintesis de composiciones a base de oxidos mixtos de circonio y de cerio. Expired - Lifetime ES2138054T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9301450A FR2701471B1 (fr) 1993-02-10 1993-02-10 Procédé de synthèse de compositions à base d'oxydes mixtes de zirconium et de cérium, compositions ainsi obtenues et utilisations de ces dernières.

Publications (1)

Publication Number Publication Date
ES2138054T3 true ES2138054T3 (es) 2000-01-01

Family

ID=9443900

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94400235T Expired - Lifetime ES2138054T3 (es) 1993-02-10 1994-02-04 Procedimiento de sintesis de composiciones a base de oxidos mixtos de circonio y de cerio.

Country Status (13)

Country Link
US (2) US5607892A (es)
EP (2) EP0930271A3 (es)
JP (1) JP2787540B2 (es)
KR (1) KR100295168B1 (es)
AT (1) ATE183725T1 (es)
AU (1) AU668445B2 (es)
BR (1) BR9400472A (es)
CA (1) CA2115305C (es)
DE (1) DE69420163T2 (es)
ES (1) ES2138054T3 (es)
FI (1) FI107800B (es)
FR (1) FR2701471B1 (es)
ZA (1) ZA94837B (es)

Families Citing this family (109)

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ZA94837B (en) 1994-09-05
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KR940019602A (ko) 1994-09-14
US5607892A (en) 1997-03-04
CA2115305A1 (fr) 1994-08-11
US5626826A (en) 1997-05-06
BR9400472A (pt) 1994-09-27
CA2115305C (fr) 1999-08-10
AU5392494A (en) 1994-09-08
EP0930271A3 (fr) 1999-07-28
EP0614854A1 (fr) 1994-09-14
FR2701471A1 (fr) 1994-08-19
FR2701471B1 (fr) 1995-05-24
JP2787540B2 (ja) 1998-08-20
JPH06279027A (ja) 1994-10-04
AU668445B2 (en) 1996-05-02
DE69420163D1 (de) 1999-09-30
EP0614854B1 (fr) 1999-08-25
DE69420163T2 (de) 2000-04-20
FI940595A (fi) 1994-08-11
ATE183725T1 (de) 1999-09-15
FI107800B (fi) 2001-10-15

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