FR2321940A1 - Catalyseurs polyfonctionnels et procede d'utilisation - Google Patents

Catalyseurs polyfonctionnels et procede d'utilisation

Info

Publication number
FR2321940A1
FR2321940A1 FR7625703A FR7625703A FR2321940A1 FR 2321940 A1 FR2321940 A1 FR 2321940A1 FR 7625703 A FR7625703 A FR 7625703A FR 7625703 A FR7625703 A FR 7625703A FR 2321940 A1 FR2321940 A1 FR 2321940A1
Authority
FR
France
Prior art keywords
polyfunctional catalysts
polyfunctional
catalysts
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
FR7625703A
Other languages
English (en)
French (fr)
Other versions
FR2321940B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
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.)
Engelhard Minerals and Chemicals Corp
Original Assignee
Engelhard Minerals and Chemicals 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 Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Publication of FR2321940A1 publication Critical patent/FR2321940A1/fr
Application granted granted Critical
Publication of FR2321940B1 publication Critical patent/FR2321940B1/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
    • B01J23/38—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
    • B01J23/70—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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0238—Impregnation, coating or precipitation via the gaseous phase-sublimation
    • 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)
FR7625703A 1975-08-27 1976-08-25 Catalyseurs polyfonctionnels et procede d'utilisation Granted FR2321940A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60808475A 1975-08-27 1975-08-27

Publications (2)

Publication Number Publication Date
FR2321940A1 true FR2321940A1 (fr) 1977-03-25
FR2321940B1 FR2321940B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1983-01-28

Family

ID=24434964

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625703A Granted FR2321940A1 (fr) 1975-08-27 1976-08-25 Catalyseurs polyfonctionnels et procede d'utilisation

Country Status (16)

Country Link
US (1) US4157316A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5227088A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AR (1) AR220510A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU505606B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE845625A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR7605638A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1083124A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD127678A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2637198A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (3) ES450974A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2321940A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1561683A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1068218B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MX (1) MX4509E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
PL (1) PL107472B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE446506C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403825A1 (fr) * 1977-09-23 1979-04-20 Engelhard Min & Chem Compositions catalytiques, preparation et application
FR2403824A1 (fr) * 1977-09-23 1979-04-20 Engelhard Min & Chem Compositions catalytiques, preparation et utilisation
FR2460709A1 (fr) * 1979-07-09 1981-01-30 Renault Dispositif de protection de reacteurs catalytiques
EP0107471A3 (en) * 1982-10-18 1984-05-30 Universal Matthey Products Limited Oxidation catalysts
EP0125565A3 (en) * 1983-05-12 1986-12-30 Nippon Shokubai Kagaku Kogyo Co., Ltd Process for producing honeycomb catalyst for exhaust gas conversion
EP0298351A3 (en) * 1987-07-10 1989-08-09 W.R. Grace & Co.-Conn. Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide
WO1990000441A1 (en) * 1988-07-13 1990-01-25 Allied-Signal Inc. Pollution control catalyst for minimizing h2s emissions
EP0358124A3 (en) * 1988-09-07 1990-08-22 Degussa Aktiengesellschaft Catalyst for cleaning exhaust gases from combustion engines with reduction of hydrogen sulphide emission, production and use
EP0427494A3 (en) * 1989-11-08 1991-08-14 Engelhard Corporation Staged three-way conversion catalyst and method for using the same
WO1995032790A1 (en) * 1994-06-01 1995-12-07 Asec Manufacturing Company ALLOYED METAL CATALYSTS FOR THE REDUCTION OF NOx IN THE EXHAUST GASES FROM INTERNAL COMBUSTION ENGINES CONTAINING EXCESS OXYGEN

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JPS5447889A (en) * 1977-09-22 1979-04-14 Toyota Motor Corp Catalyst for purification of internal combustion engine exhaust gas
JPS55155739A (en) * 1979-05-23 1980-12-04 Toyota Central Res & Dev Lab Inc Exhaust gas purifying catalyzer
US4440874A (en) * 1982-04-14 1984-04-03 Engelhard Corporation Catalyst composition and method for its manufacture
US4757045A (en) * 1983-02-14 1988-07-12 Engelhard Corporation Catalysts with support coatings having increased macroporosity and method for producing the catalysts
DE3326100C2 (de) * 1983-07-20 1987-02-05 Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf Verfahren und Anlage zum Vermindern der Stickoxydemission in Rauchgasen von Feuerungsanlagen
US4608357A (en) * 1984-02-06 1986-08-26 Engelhard Corporation Catalytic cracking with mullite composition promoted combustion of carbon monoxide
US4675308A (en) * 1984-06-14 1987-06-23 Engelhard Corporation Three-way catalyst for lean operating engines
BR8502767A (pt) * 1984-06-14 1986-02-18 Engelhard Corp Processo para oxidar simultaneamente hidrocarbonetos gasosos e monoxido de carbono,processo para preparacao de catalisador de tres vias,e processo para oxidacao de hidrocarbonetos e monosido de carbono e para reducao de oxidos de nitrogenio em uma corrente de gas
JPS6128455A (ja) * 1984-07-19 1986-02-08 Mitsui Mining & Smelting Co Ltd 排ガス浄化用触媒およびその製造方法
US4678770A (en) * 1985-01-31 1987-07-07 Engelhard Corporation Three-way catalyst for lean exhaust systems
CA1247074A (en) * 1985-01-31 1988-12-20 Chung-Zong Wan Three-way catalysts of improved efficiency
US4673556A (en) * 1985-11-08 1987-06-16 General Motors Corporation Method of simultaneous oxidation of carbon monoxide and unburned fuel in methanol vehicle exhaust
US4714694A (en) * 1986-06-30 1987-12-22 Engelhard Corporation Aluminum-stabilized ceria catalyst compositions, and methods of making the same
JPH0626672B2 (ja) * 1987-03-05 1994-04-13 株式会社豊田中央研究所 排気浄化触媒及びその製造方法
US4760044A (en) * 1987-06-15 1988-07-26 Allied-Signal Inc. Catalyst for minimizing the H2 S emissions from automotive exhaust and method of its manufacture
US5008090A (en) * 1987-06-15 1991-04-16 Allied-Signal Inc. Catalytic process for minimizing the H2 S emissions from automotive exhaust
US4895824A (en) * 1987-09-08 1990-01-23 W. R. Grace & Co.-Conn. Add-on hydrogen sulfide trap
US4782038C1 (en) * 1987-10-26 2001-04-17 Ford Motor Co Platinum group alumina-supported metal oxidation catalysts and method of making same
US4906443A (en) * 1987-10-26 1990-03-06 Ford Motor Company Construction, method of making and method of using alumina-supported, precious metal oxidation catalysts
FR2628655B1 (fr) * 1988-03-16 1990-07-20 Pro Catalyse Support de catalyseur et catalyseur pour le traitement des gaz d'echappement des moteurs a combustion interne et procede de fabrication de ceux-ci
US5061464A (en) * 1988-11-14 1991-10-29 Johnson Matthey, Inc. Oxidation process and catalyst for use therefor
WO1990005579A1 (en) * 1988-11-14 1990-05-31 Johnson Matthey Inc. Oxidation process and catalyst
US5137703A (en) * 1989-06-26 1992-08-11 Trustees Of Boston University Thermal catalytic methods for converting oxides of nitrogen into environmentally compatible products
US5085841A (en) * 1990-07-13 1992-02-04 Robinson Barnett J Method for reduction of pollution from combustion chambers
DE69435061T2 (de) * 1993-06-25 2008-12-18 Basf Catalysts Llc Katalysatorzusammensetzung
JP4098835B2 (ja) * 1993-12-07 2008-06-11 トヨタ自動車株式会社 排気ガス浄化用触媒
JP3513934B2 (ja) * 1994-09-26 2004-03-31 マツダ株式会社 排気ガス浄化用触媒及びその製造方法
US6087298A (en) * 1996-05-14 2000-07-11 Engelhard Corporation Exhaust gas treatment system
US5981427A (en) * 1996-09-04 1999-11-09 Engelhard Corporation Catalyst composition
US5948723A (en) * 1996-09-04 1999-09-07 Engelhard Corporation Layered catalyst composite
US5948377A (en) * 1996-09-04 1999-09-07 Engelhard Corporation Catalyst composition
US5898014A (en) * 1996-09-27 1999-04-27 Engelhard Corporation Catalyst composition containing oxygen storage components
US6248688B1 (en) 1996-09-27 2001-06-19 Engelhard Corporation Catalyst composition containing oxygen storage components
US6921738B2 (en) 1996-12-06 2005-07-26 Engelhard Corporation Catalytic metal plate
TW442324B (en) 1996-12-06 2001-06-23 Engelhard Corp Catalytic metal plate
AU1930299A (en) * 1997-12-24 1999-07-19 Engelhard Corporation Catalytic converter system for internal combustion engine powere d vehicles
US6110862A (en) * 1998-05-07 2000-08-29 Engelhard Corporation Catalytic material having improved conversion performance
US6455182B1 (en) * 2001-05-09 2002-09-24 Utc Fuel Cells, Llc Shift converter having an improved catalyst composition, and method for its use
US20040147394A1 (en) * 2002-03-28 2004-07-29 Wagner Jon P. Catalyst for production of hydrogen
US20030186805A1 (en) * 2002-03-28 2003-10-02 Vanderspurt Thomas Henry Ceria-based mixed-metal oxide structure, including method of making and use
US6932848B2 (en) * 2003-03-28 2005-08-23 Utc Fuel Cells, Llc High performance fuel processing system for fuel cell power plant
US20050025701A1 (en) * 2003-07-30 2005-02-03 Millennium Research Laboratories, Inc. Steam reforming catalyst composition and process
US20050032640A1 (en) * 2003-08-07 2005-02-10 He Huang Method and structure for desulfurizing gasoline or diesel fuel for use in a fuel cell power plant
US20050164879A1 (en) * 2004-01-28 2005-07-28 Engelhard Corporation Layered SOx tolerant NOx trap catalysts and methods of making and using the same
US20050202966A1 (en) * 2004-03-11 2005-09-15 W.C. Heraeus Gmbh Catalyst for the decomposition of N2O in the Ostwald process
DE102004024026A1 (de) * 2004-03-11 2005-09-29 W.C. Heraeus Gmbh Katalysator zur N2O-Zersetzung beim Ostwaldprozess
MY142111A (en) * 2004-04-16 2010-09-15 Nippon Oil Corp Catalyst for fischer-tropsch synthesis and process for producing hydrocarbons
US7767619B2 (en) * 2004-07-09 2010-08-03 Sud-Chemie Inc. Promoted calcium-aluminate supported catalysts for synthesis gas generation
DE102004043421A1 (de) * 2004-09-06 2006-03-23 W.C. Heraeus Gmbh Katalysator für 2-Takt-Motoren oder Kleinmotoren
CA2628961A1 (en) * 2004-11-08 2006-05-18 Emissions Technology, Inc. Fuel combustion catalyst microburst aerosol delivery device and continuous and consistent aerosol delivery device
US7584905B2 (en) * 2004-11-08 2009-09-08 Emissions Technology, Inc. Fuel combustion catalyst microburst aerosol delivery device and continuous and consistent aerosol delivery device
WO2006064684A1 (ja) 2004-12-14 2006-06-22 Nissan Motor Co., Ltd. 触媒、排ガス浄化触媒、及び触媒の製造方法
US7943547B2 (en) * 2005-09-14 2011-05-17 Hamilton Sundstrand Space Systems International, Inc. Selective catalytic oxidation of ammonia to water and nitrogen
US20070098611A1 (en) * 2005-10-31 2007-05-03 Yang Xiaolin D Stabilized flash calcined gibbsite as a catalyst support
US7506504B2 (en) * 2005-12-21 2009-03-24 Basf Catalysts Llc DOC and particulate control system for diesel engines
TWI449572B (zh) * 2006-11-29 2014-08-21 Umicore Shokubai Japan Co Ltd Oxidation catalyst and the oxidation catalyst using an exhaust gas purification system
WO2008143792A1 (en) 2007-05-11 2008-11-27 Sdc Materials, Inc. Formation of catalytic regions within porous structures using supercritical phase processing
US8507401B1 (en) 2007-10-15 2013-08-13 SDCmaterials, Inc. Method and system for forming plug and play metal catalysts
US8033167B2 (en) * 2009-02-24 2011-10-11 Gary Miller Systems and methods for providing a catalyst
US8557727B2 (en) 2009-12-15 2013-10-15 SDCmaterials, Inc. Method of forming a catalyst with inhibited mobility of nano-active material
US9149797B2 (en) 2009-12-15 2015-10-06 SDCmaterials, Inc. Catalyst production method and system
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US9119309B1 (en) 2009-12-15 2015-08-25 SDCmaterials, Inc. In situ oxide removal, dispersal and drying
US8545652B1 (en) 2009-12-15 2013-10-01 SDCmaterials, Inc. Impact resistant material
US8803025B2 (en) 2009-12-15 2014-08-12 SDCmaterials, Inc. Non-plugging D.C. plasma gun
WO2011084534A1 (en) * 2009-12-15 2011-07-14 Sdcmaterials Llc Advanced catalysts for fine chemical and pharmaceutical applications
US8470112B1 (en) 2009-12-15 2013-06-25 SDCmaterials, Inc. Workflow for novel composite materials
US8669202B2 (en) 2011-02-23 2014-03-11 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PtPd catalysts
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US9156025B2 (en) 2012-11-21 2015-10-13 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9511352B2 (en) 2012-11-21 2016-12-06 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
EP3024571B1 (en) 2013-07-25 2020-05-27 Umicore AG & Co. KG Washcoats and coated substrates for catalytic converters
EP3060335A4 (en) 2013-10-22 2017-07-19 SDCMaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
JP2016535664A (ja) 2013-10-22 2016-11-17 エスディーシーマテリアルズ， インコーポレイテッド リーンＮＯｘトラップの組成物
EP3119500A4 (en) 2014-03-21 2017-12-13 SDC Materials, Inc. Compositions for passive nox adsorption (pna) systems
RU2617504C2 (ru) * 2015-05-06 2017-04-25 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский национальный исследовательский государственный университет имени Н.Г. Чернышевского" Способ очистки газовых выбросов с помощью гранулированного глауконитового сорбента
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FR2146358A1 (en) * 1971-07-20 1973-03-02 Grace W R Ltd Catalyst for purifying exhaust gases - contg cobalt palladium and nickel, chromium, manganese or iron, esp on spinel carrier
FR2146293A1 (en) * 1971-07-20 1973-03-02 Grace W R Ltd Exhaust gas purification catalysts - for oxidation and/or reduction processes, on crystalline synthetic mullite carrier
FR2153652A5 (en) * 1971-09-20 1973-05-04 Azote & Prod Chim Catalyst for treating exhaust gases from ic engines - - contg nickel oxide and platinum
DE2308606A1 (de) * 1972-02-23 1973-09-06 Azote & Prod Chim Katalysator zur behandlung von motorauspuffgasen
FR2177951A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-03-25 1973-11-09 Degussa
FR2177998A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-03-25 1973-11-09 Degussa
FR2218937A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-02-27 1974-09-20 Standard Oil Co
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US3993572A (en) * 1972-08-04 1976-11-23 Engelhard Minerals & Chemicals Corporation Rare earth containing catalyst composition
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FR2146358A1 (en) * 1971-07-20 1973-03-02 Grace W R Ltd Catalyst for purifying exhaust gases - contg cobalt palladium and nickel, chromium, manganese or iron, esp on spinel carrier
FR2146293A1 (en) * 1971-07-20 1973-03-02 Grace W R Ltd Exhaust gas purification catalysts - for oxidation and/or reduction processes, on crystalline synthetic mullite carrier
FR2153652A5 (en) * 1971-09-20 1973-05-04 Azote & Prod Chim Catalyst for treating exhaust gases from ic engines - - contg nickel oxide and platinum
DE2308606A1 (de) * 1972-02-23 1973-09-06 Azote & Prod Chim Katalysator zur behandlung von motorauspuffgasen
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FR2237496A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-03-28 1975-02-07 Tdk Electronics Co Ltd
FR2293965A1 (fr) * 1974-12-13 1976-07-09 Oxycatalyse Ste Fse Purification des gaz d'echappement des moteurs a explosion ou a combustion interne

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403825A1 (fr) * 1977-09-23 1979-04-20 Engelhard Min & Chem Compositions catalytiques, preparation et application
FR2403824A1 (fr) * 1977-09-23 1979-04-20 Engelhard Min & Chem Compositions catalytiques, preparation et utilisation
FR2460709A1 (fr) * 1979-07-09 1981-01-30 Renault Dispositif de protection de reacteurs catalytiques
EP0107471A3 (en) * 1982-10-18 1984-05-30 Universal Matthey Products Limited Oxidation catalysts
EP0125565A3 (en) * 1983-05-12 1986-12-30 Nippon Shokubai Kagaku Kogyo Co., Ltd Process for producing honeycomb catalyst for exhaust gas conversion
EP0298351A3 (en) * 1987-07-10 1989-08-09 W.R. Grace & Co.-Conn. Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide
WO1990000441A1 (en) * 1988-07-13 1990-01-25 Allied-Signal Inc. Pollution control catalyst for minimizing h2s emissions
EP0358124A3 (en) * 1988-09-07 1990-08-22 Degussa Aktiengesellschaft Catalyst for cleaning exhaust gases from combustion engines with reduction of hydrogen sulphide emission, production and use
EP0427494A3 (en) * 1989-11-08 1991-08-14 Engelhard Corporation Staged three-way conversion catalyst and method for using the same
US5531972A (en) * 1989-11-08 1996-07-02 Engelhard Corporation Staged three-way conversion catalyst and method of using the same
WO1995032790A1 (en) * 1994-06-01 1995-12-07 Asec Manufacturing Company ALLOYED METAL CATALYSTS FOR THE REDUCTION OF NOx IN THE EXHAUST GASES FROM INTERNAL COMBUSTION ENGINES CONTAINING EXCESS OXYGEN

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PL107472B1 (pl) 1980-02-29
ES462043A1 (es) 1978-06-01
FR2321940B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1983-01-28
MX4509E (es) 1982-06-02
GB1561683A (en) 1980-02-27
IT1068218B (it) 1985-03-21
BE845625A (fr) 1977-02-28
SE7609423L (sv) 1977-02-28
DE2637198A1 (de) 1977-03-03
AU1713376A (en) 1978-03-02
AU505606B2 (en) 1979-11-29
ES462042A1 (es) 1978-06-01
ES450974A1 (es) 1978-01-16
CA1083124A (en) 1980-08-05
SE446506C (sv) 1988-04-18
BR7605638A (pt) 1977-08-09
SE446506B (sv) 1986-09-22
US4157316A (en) 1979-06-05
DE2637198C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-08-10
DD127678A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-10-05
AR220510A1 (es) 1980-11-14
JPS5227088A (en) 1977-03-01

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