ES552019A0 - Un metodo para oxidar hidrocarburos y monoxido de carbono presentes en una corriente gaseosa - Google Patents

Un metodo para oxidar hidrocarburos y monoxido de carbono presentes en una corriente gaseosa

Info

Publication number
ES552019A0
ES552019A0 ES552019A ES552019A ES552019A0 ES 552019 A0 ES552019 A0 ES 552019A0 ES 552019 A ES552019 A ES 552019A ES 552019 A ES552019 A ES 552019A ES 552019 A0 ES552019 A0 ES 552019A0
Authority
ES
Spain
Prior art keywords
carbon monoxide
monoxide present
gaseous current
oxidizing hydrocarbons
oxidizing
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
ES552019A
Other languages
English (en)
Other versions
ES8702172A1 (es
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
Publication of ES552019A0 publication Critical patent/ES552019A0/es
Publication of ES8702172A1 publication Critical patent/ES8702172A1/es
Expired 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
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • 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
    • 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
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • B01J23/6522—Chromium
    • 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
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/656—Manganese, technetium or rhenium
    • B01J23/6562—Manganese
    • 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
    • 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
    • B01J37/04—Mixing
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
    • B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
    • 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)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
ES552019A 1984-06-14 1986-02-14 Un metodo para oxidar hidrocarburos y monoxido de carbono presentes en una corriente gaseosa Expired ES8702172A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US62041584A 1984-06-14 1984-06-14
US69695085A 1985-01-31 1985-01-31
US69694785A 1985-01-31 1985-01-31

Publications (2)

Publication Number Publication Date
ES552019A0 true ES552019A0 (es) 1987-01-01
ES8702172A1 ES8702172A1 (es) 1987-01-01

Family

ID=27417260

Family Applications (3)

Application Number Title Priority Date Filing Date
ES544084A Expired ES8700960A1 (es) 1984-06-14 1985-06-12 Un metodo para preparar un catalizador mejorado de tres vias a base de rodio, oxido de tierras, raras platino y-0 paladio.
ES552019A Expired ES8702172A1 (es) 1984-06-14 1986-02-14 Un metodo para oxidar hidrocarburos y monoxido de carbono presentes en una corriente gaseosa
ES552018A Expired ES8707126A1 (es) 1984-06-14 1986-02-14 Un metodo para oxidar simultaneamente hidrocarburos gaseosos y monoxido de carbono

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES544084A Expired ES8700960A1 (es) 1984-06-14 1985-06-12 Un metodo para preparar un catalizador mejorado de tres vias a base de rodio, oxido de tierras, raras platino y-0 paladio.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES552018A Expired ES8707126A1 (es) 1984-06-14 1986-02-14 Un metodo para oxidar simultaneamente hidrocarburos gaseosos y monoxido de carbono

Country Status (8)

Country Link
EP (2) EP0304095A3 (es)
JP (1) JPH067923B2 (es)
KR (1) KR920009112B1 (es)
AU (2) AU589564B2 (es)
BR (1) BR8502767A (es)
DE (2) DE171151T1 (es)
ES (3) ES8700960A1 (es)
MX (1) MX173884B (es)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595265B1 (fr) * 1986-03-07 1992-10-09 Pro Catalyse Catalyseur et procede pour le traitement des gaz d'echappement des moteurs a combustion interne
US4904633A (en) * 1986-12-18 1990-02-27 Nippon Shokubai Kagaku Kogyo Co., Ltd. Catalyst for purifying exhaust gas and method for production thereof
JPS63310637A (ja) * 1987-06-12 1988-12-19 ジヨンソン　マセイ　インコ−ポレ−テツド 三重効用触媒
WO1990000441A1 (en) * 1988-07-13 1990-01-25 Allied-Signal Inc. Pollution control catalyst for minimizing h2s emissions
US4780447A (en) * 1987-07-10 1988-10-25 W. R. Grace & Co.-Conn. Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide and method of making the catalysts
JP2537239B2 (ja) * 1987-08-28 1996-09-25 エヌ・イーケムキヤツト 株式会社 耐熱性に優れた内燃機関排気ガス浄化用触媒及びその製造方法
US4791091A (en) * 1987-09-30 1988-12-13 Allied-Signal Inc. Catalyst for treatment of exhaust gases from internal combustion engines and method of manufacturing the catalyst
US4782038C1 (en) * 1987-10-26 2001-04-17 Ford Motor Co Platinum group alumina-supported metal oxidation catalysts and method of making same
US4939113A (en) * 1987-11-03 1990-07-03 Engelhard Corporation Hydrogen sulfide suppressing catalyst system using an oxide of copper, manganese, nickel or iron
US5196390A (en) * 1987-11-03 1993-03-23 Engelhard Corporation Hydrogen sulfide-suppressing catalyst system
DE3803122C1 (es) * 1988-02-03 1989-07-13 Degussa Ag, 6000 Frankfurt, De
US5015617A (en) * 1988-04-14 1991-05-14 Nippon Shokubai Kagaku Kogyo Co., Ltd. Catalyst for purifying exhaust gas and method for production thereof
JPH0763631B2 (ja) * 1988-04-18 1995-07-12 トヨタ自動車株式会社 排気ガス浄化用触媒の製造方法
JP2533371B2 (ja) * 1989-05-01 1996-09-11 株式会社豊田中央研究所 排気ガス浄化用触媒
DE69118024T2 (de) * 1990-06-29 1996-10-02 Toyota Motor Co Ltd Katalysator zur Reinigung von Abgasen
JP2581872B2 (ja) * 1992-05-15 1997-02-12 エヌ・イーケムキャット株式会社 耐熱性に優れた内燃機関排気ガス浄化用触媒及びその製造方法
WO1995000235A1 (en) * 1993-06-25 1995-01-05 Engelhard Corporation Layered catalyst composite
JP2742652B2 (ja) * 1993-09-08 1998-04-22 レイテック株式会社 塩化ビニル樹脂裏打敷物
GB9323597D0 (en) * 1993-11-16 1994-01-05 Tickford Ltd Catalyst system for internal combustion engine
JP3363564B2 (ja) * 1994-02-04 2003-01-08 トヨタ自動車株式会社 排ガス浄化用触媒
JP3391878B2 (ja) * 1994-02-23 2003-03-31 トヨタ自動車株式会社 排気ガス浄化用触媒
US6004521A (en) * 1994-02-23 1999-12-21 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gases
DE69516281T2 (de) * 1994-06-17 2000-08-31 Engelhard Corp Zusammengesetzter katalysator mit schichtstruktur
US5888464A (en) * 1997-04-08 1999-03-30 Engelhard Corporation Catalyst composition containing an intimately combined cerium-zirconium oxide
JP4290240B2 (ja) 1998-05-27 2009-07-01 ジョンソン・マッセイ・ジャパン・インコーポレイテッド 排気ガス浄化用触媒および排気ガス浄化方法
KR100359560B1 (ko) * 1999-12-17 2002-11-09 (주)이레 엔지니어링 기체와 액체 가속 혼합장치
US20030054955A1 (en) * 2001-07-26 2003-03-20 Loewenstein Michael A. Novel method for the preparation of supported bimetallic catalysts
JP2005185959A (ja) * 2003-12-25 2005-07-14 Nissan Motor Co Ltd 排ガス浄化用触媒
JP5168833B2 (ja) * 2005-07-12 2013-03-27 トヨタ自動車株式会社 排ガス浄化触媒及びその製造方法
US7655203B2 (en) 2005-10-04 2010-02-02 General Electric Company Multi-component catalyst system and method for the reduction of NOx
US7431905B2 (en) 2005-10-04 2008-10-07 General Electric Company Catalyst system and method for the reduction of NOx
EP2177265A4 (en) 2007-06-27 2011-07-20 Toyota Motor Co Ltd CATALYST SUPPORT AND CATALYST FOR EXHAUST GAS PURIFICATION
EP2834001B1 (de) 2012-04-05 2017-11-01 Umicore AG & Co. KG Verfahren zur entfernung von kohlenmonoxid und kohlenwasserstoff aus dem abgas mager betriebener verbrennungsmotoren
KR101507325B1 (ko) * 2013-12-20 2015-03-31 희성촉매 주식회사 배기가스 정화용 촉매 부재 및 워시코트
CN104162424A (zh) * 2014-07-11 2014-11-26 华东理工大学 氧化铈负载钯催化剂的制备方法及在co催化氧化中的应用
JP2016068200A (ja) 2014-09-30 2016-05-09 セイコーエプソン株式会社 ロボット
JP7177143B2 (ja) 2017-09-27 2022-11-22 ジョンソン、マッセイ、パブリック、リミテッド、カンパニー 排気ガス浄化用途のための低ウォッシュコート充填量単層触媒
WO2020021512A1 (en) * 2018-07-27 2020-01-30 Johnson Matthey Public Limited Company Novel pgm nanoparticles twc catalysts for gasoline exhaust gas applications
BR112022010275A2 (pt) * 2019-11-27 2022-08-09 Basf Corp Composição de catalisador de oxidação, artigo de catalisador de oxidação, artigo de filtro de fuligem catalisado, sistema de tratamento de gás de escape e método para tratar uma corrente de gás de escape

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993572A (en) * 1972-08-04 1976-11-23 Engelhard Minerals & Chemicals Corporation Rare earth containing catalyst composition
DE2306395C3 (de) * 1973-02-09 1978-08-10 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Trägerkatalysator
MX4509E (es) * 1975-08-27 1982-06-02 Engelhard Min & Chem Composicion catalitica mejorada para oxidar en forma simultanea hidrocarburos gascosos y monoxido de carbono y reducir oxidos de nitrogeno
SE433178B (sv) * 1975-10-31 1984-05-14 Johnson Matthey Co Ltd Katalysator for rening av bilavgaser av den allmenna typen a?71xm?71yo?71z
JPS6046247B2 (ja) * 1977-02-15 1985-10-15 トヨタ自動車株式会社 内燃機関の排出ガスを浄化する方法及び装置
US4171288A (en) * 1977-09-23 1979-10-16 Engelhard Minerals & Chemicals Corporation Catalyst compositions and the method of manufacturing them
FR2495957B1 (fr) * 1980-12-17 1986-09-12 Pro Catalyse Catalyseur et procede perfectionnes pour le traitement des gaz d'echappement des moteurs a combustion interne
JPS5881441A (ja) * 1981-11-11 1983-05-16 Nippon Shokubai Kagaku Kogyo Co Ltd 排ガス浄化用触媒の製法
FR2530489B1 (fr) * 1982-07-26 1987-02-27 Pro Catalyse Procede de fabrication de catalyseurs pour le traitement des gaz d'echappement des moteurs a combustion interne
US4675308A (en) * 1984-06-14 1987-06-23 Engelhard Corporation Three-way catalyst for lean operating engines
CA1247074A (en) * 1985-01-31 1988-12-20 Chung-Zong Wan Three-way catalysts of improved efficiency
US4678770A (en) * 1985-01-31 1987-07-07 Engelhard Corporation Three-way catalyst for lean exhaust systems

Also Published As

Publication number Publication date
EP0304095A3 (en) 1990-05-16
AU3950389A (en) 1989-12-07
BR8502767A (pt) 1986-02-18
JPH067923B2 (ja) 1994-02-02
ES8700960A1 (es) 1986-11-16
AU4364285A (en) 1985-12-19
DE3571766D1 (en) 1989-08-31
ES8707126A1 (es) 1987-07-16
MX173884B (es) 1994-04-07
KR860000095A (ko) 1986-01-25
KR920009112B1 (ko) 1992-10-13
AU618391B2 (en) 1991-12-19
ES552018A0 (es) 1987-07-16
EP0171151B1 (en) 1989-07-26
EP0171151A1 (en) 1986-02-12
EP0304095A2 (en) 1989-02-22
JPS6111147A (ja) 1986-01-18
ES544084A0 (es) 1986-11-16
ES8702172A1 (es) 1987-01-01
DE171151T1 (de) 1986-11-27
AU589564B2 (en) 1989-10-19

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970303