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FR2298367A1 - Dual-purpose catalysts for exhaust gas purifcn - by simultaneous oxidn and reduction in a single-bed process - Google Patents

Dual-purpose catalysts for exhaust gas purifcn - by simultaneous oxidn and reduction in a single-bed process

Info

Publication number
FR2298367A1
FR2298367A1 FR7601884A FR7601884A FR2298367A1 FR 2298367 A1 FR2298367 A1 FR 2298367A1 FR 7601884 A FR7601884 A FR 7601884A FR 7601884 A FR7601884 A FR 7601884A FR 2298367 A1 FR2298367 A1 FR 2298367A1
Authority
FR
France
Prior art keywords
oxidn
simultaneous
silica
purifcn
dual
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
FR7601884A
Other languages
French (fr)
Other versions
FR2298367B3 (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.)
GCP Products UK Ltd
WR Grace and Co Conn
Original Assignee
WR Grace Ltd
WR Grace and Co Conn
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 WR Grace Ltd, WR Grace and Co Conn filed Critical WR Grace Ltd
Publication of FR2298367A1 publication Critical patent/FR2298367A1/en
Application granted granted Critical
Publication of FR2298367B3 publication Critical patent/FR2298367B3/fr
Granted 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
    • 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
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, 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
    • 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
    • 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)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Catalyst for simultaneous oxidn. of CO and hydrocarbons and redn. of nitrogen oxides in exhaust gases from i.c. engines, contains (a) 0.01-2 wt.% Pd and/or Pt, (b) 0.1-10% cerium oxide and/or zirconium oxide, (c) 3-60% nickel oxide, and (d) silica and/or alumina carrier as the remainder. Impurities are efficiently removed by a single bed instead of two catalyst beds of different compsn. Suitable carriers are alumina, silica gel, silica/zirconia, silica/alumina cordierite, MgO/Al2O3 spinel or mullite, pref. with surface area 50-400 m2/g and sufficient porosity to take up 0.3-2 ml. soln. per g. solid carrier.
FR7601884A 1975-01-24 1976-01-23 Dual-purpose catalysts for exhaust gas purifcn - by simultaneous oxidn and reduction in a single-bed process Granted FR2298367A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54402575A 1975-01-24 1975-01-24

Publications (2)

Publication Number Publication Date
FR2298367A1 true FR2298367A1 (en) 1976-08-20
FR2298367B3 FR2298367B3 (en) 1978-10-13

Family

ID=24170475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7601884A Granted FR2298367A1 (en) 1975-01-24 1976-01-23 Dual-purpose catalysts for exhaust gas purifcn - by simultaneous oxidn and reduction in a single-bed process

Country Status (4)

Country Link
JP (1) JPS5187490A (en)
DE (1) DE2602286A1 (en)
FR (1) FR2298367A1 (en)
IT (1) IT1054981B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403824A1 (en) * 1977-09-23 1979-04-20 Engelhard Min & Chem CATALYTIC COMPOSITIONS, PREPARATION AND USE
FR2403825A1 (en) * 1977-09-23 1979-04-20 Engelhard Min & Chem CATALYTIC COMPOSITIONS, PREPARATION AND APPLICATION
EP0125565A3 (en) * 1983-05-12 1986-12-30 Nippon Shokubai Kagaku Kogyo Co., Ltd Process for producing honeycomb catalyst for exhaust gas conversion
FR2595265A1 (en) * 1986-03-07 1987-09-11 Pro Catalyse Catalyst and process for the treatment of exhaust gases of internal combustion engines
EP0221598A3 (en) * 1985-11-08 1987-10-28 Shell Internationale Research Maatschappij B.V. Supported metal catalysts and use thereof
EP0244127A1 (en) * 1986-04-16 1987-11-04 Johnson Matthey, Inc., Method for catalytically controlling exhaust gaz from automobiles
EP0272136A3 (en) * 1986-12-18 1989-02-22 Nippon Shokubai Kagaku Kogyo Co., Ltd Catalyst for purifying exhaust gas and method for its production
US4895824A (en) * 1987-09-08 1990-01-23 W. R. Grace & Co.-Conn. Add-on hydrogen sulfide trap
WO1999037397A1 (en) * 1998-01-21 1999-07-29 Dytech Corporation Ltd. Catalyst carrier carrying nickel, aluminium, lanthanum and a precious metal element
WO2000043121A1 (en) * 1999-01-21 2000-07-27 Imperial Chemical Industries Plc Catalyst carrier carrying nickel ruthenium and lanthanum

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022022813A1 (en) * 2020-07-28 2022-02-03 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of forming dielectric films, new precursors and their use in the semi-conductor manufacturing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403824A1 (en) * 1977-09-23 1979-04-20 Engelhard Min & Chem CATALYTIC COMPOSITIONS, PREPARATION AND USE
FR2403825A1 (en) * 1977-09-23 1979-04-20 Engelhard Min & Chem CATALYTIC COMPOSITIONS, PREPARATION AND APPLICATION
EP0125565A3 (en) * 1983-05-12 1986-12-30 Nippon Shokubai Kagaku Kogyo Co., Ltd Process for producing honeycomb catalyst for exhaust gas conversion
EP0221598A3 (en) * 1985-11-08 1987-10-28 Shell Internationale Research Maatschappij B.V. Supported metal catalysts and use thereof
FR2595265A1 (en) * 1986-03-07 1987-09-11 Pro Catalyse Catalyst and process for the treatment of exhaust gases of internal combustion engines
EP0244127A1 (en) * 1986-04-16 1987-11-04 Johnson Matthey, Inc., Method for catalytically controlling exhaust gaz from automobiles
EP0272136A3 (en) * 1986-12-18 1989-02-22 Nippon Shokubai Kagaku Kogyo Co., Ltd Catalyst for purifying exhaust gas and method for its production
US4895824A (en) * 1987-09-08 1990-01-23 W. R. Grace & Co.-Conn. Add-on hydrogen sulfide trap
WO1999037397A1 (en) * 1998-01-21 1999-07-29 Dytech Corporation Ltd. Catalyst carrier carrying nickel, aluminium, lanthanum and a precious metal element
WO2000043121A1 (en) * 1999-01-21 2000-07-27 Imperial Chemical Industries Plc Catalyst carrier carrying nickel ruthenium and lanthanum

Also Published As

Publication number Publication date
DE2602286A1 (en) 1976-07-29
IT1054981B (en) 1981-11-30
FR2298367B3 (en) 1978-10-13
JPS5187490A (en) 1976-07-31

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Legal Events

Date Code Title Description
ST Notification of lapse