ES2044930T3 - Composiciones cataliticas mejoradas y procedimientos de preparar las mismas. - Google Patents

Composiciones cataliticas mejoradas y procedimientos de preparar las mismas.

Info

Publication number
ES2044930T3
ES2044930T3 ES87305668T ES87305668T ES2044930T3 ES 2044930 T3 ES2044930 T3 ES 2044930T3 ES 87305668 T ES87305668 T ES 87305668T ES 87305668 T ES87305668 T ES 87305668T ES 2044930 T3 ES2044930 T3 ES 2044930T3
Authority
ES
Spain
Prior art keywords
group metal
platinum group
metal catalytic
catalytic components
coating
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
ES87305668T
Other languages
English (en)
Inventor
Chung-Zong Wan
Joseph C Dettling
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.)
BASF Catalysts LLC
Original Assignee
Engelhard Corp
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 Engelhard Corp filed Critical Engelhard Corp
Application granted granted Critical
Publication of ES2044930T3 publication Critical patent/ES2044930T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

UN METODO PARA OBTENER UNA COMPOSICION CATALITICA QUE COMPRENDE UNA CAPA DE ALUMINA ACTIVADA, ESTABILIZADA FRENTE A LA DEGRADACION TERMICA, COMPRENDE APLICAR UNA CAPA DE ALUMINA QUE TIENE UNO O MAS COMPONENTES CATALITICOS DE METALES DEL GRUPO DEL PLATINO DISPERSADOS EN UN SUBSTRATO PORTADOR Y CALCINAR EL REVESTIMIENTO. EL REVESTIMIENTO CALCINADO SE IMPREGNA DESPUES CON UNA DISOLUCION DE UN PRECURSOR-ESTABILIZADOR TERMICO Y CALCINA DE NUEVO PARA OBTENER UN ESTABILIZADOR TERMICO EN LA ALUMINA. TAMBIEN SE PUEDE AÑADIR A LA COMPOSICION CERIA BRUTA, OPCIONALMENTE UNA CERIA BRUTA DE ALUMINIO ESTABILIZADO, EN EL QUE OPCIONALMENTE SE DISPERSA UNO O MAS COMPONENTES CATALITICOS DE METALES DEL GRUPO DEL PLATINO NO RODIO, POR EJEMPLO PLATINO. UN ASPECTO DISTINTO DE LA INVENCION ES PROPORCIONAR UN METODO PARA FABRICAR UNA COMPOSICION DE CATALIZADOR, QUE COMPRENDE DISPERSAR UNO O MAS COMPONENTES CATALITICOS DE METALES DEL GRUPO DEL PLATINO SOBRE ALUMINA ACTIVADA Y CALCINAR LA ALUMINA Y LOS COMPONENTES CATALITICOS DE METALES DEL GRUPO DEL PLATINO COMBINADOS. LAS ETAPAS SE LLEVAN A CABO BAJO CONDICIONES DE ACIDEZ LIMITADA, CON LO QUE SE CONSIGUEN POR LO MENOS MINIMAS DISPERSIONES DE LOS COMPONENETES CATALITICOS DE METALES DEL GRUPO DEL PLATINO. LA INVENCION TAMBIEN PROPORCIONA COMPOSICIONES QUE RESULTAN DE LOS METODOS ANTERIORES.
ES87305668T 1986-06-27 1987-06-25 Composiciones cataliticas mejoradas y procedimientos de preparar las mismas. Expired - Lifetime ES2044930T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/879,684 US4727052A (en) 1986-06-27 1986-06-27 Catalyst compositions and methods of making the same

Publications (1)

Publication Number Publication Date
ES2044930T3 true ES2044930T3 (es) 1994-01-16

Family

ID=25374674

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87305668T Expired - Lifetime ES2044930T3 (es) 1986-06-27 1987-06-25 Composiciones cataliticas mejoradas y procedimientos de preparar las mismas.

Country Status (10)

Country Link
US (1) US4727052A (es)
EP (1) EP0251708B1 (es)
JP (2) JP2669503B2 (es)
KR (1) KR950002217B1 (es)
AT (1) ATE95075T1 (es)
BR (1) BR8703219A (es)
CA (1) CA1295600C (es)
DE (1) DE3787578T2 (es)
ES (1) ES2044930T3 (es)
MX (1) MX168937B (es)

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JPS60168537A (ja) * 1984-02-10 1985-09-02 Nippon Shokubai Kagaku Kogyo Co Ltd 一体構造型排ガス浄化用触媒の製造方法

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US4727052A (en) 1988-02-23
JP2669503B2 (ja) 1997-10-29
DE3787578T2 (de) 1994-05-11
JPS637840A (ja) 1988-01-13
JP2755937B2 (ja) 1998-05-25
ATE95075T1 (de) 1993-10-15
EP0251708A2 (en) 1988-01-07
KR880000139A (ko) 1988-03-23
EP0251708B1 (en) 1993-09-29
EP0251708A3 (en) 1989-03-22
BR8703219A (pt) 1988-03-15
KR950002217B1 (ko) 1995-03-15
DE3787578D1 (de) 1993-11-04
JPH0999240A (ja) 1997-04-15
CA1295600C (en) 1992-02-11
MX168937B (es) 1993-06-15

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