DK0768110T3 - Katalysator og fremgangsmåde til omdannelse af nitrogenoxidforbindelser - Google Patents

Katalysator og fremgangsmåde til omdannelse af nitrogenoxidforbindelser

Info

Publication number
DK0768110T3
DK0768110T3 DK96202764T DK96202764T DK0768110T3 DK 0768110 T3 DK0768110 T3 DK 0768110T3 DK 96202764 T DK96202764 T DK 96202764T DK 96202764 T DK96202764 T DK 96202764T DK 0768110 T3 DK0768110 T3 DK 0768110T3
Authority
DK
Denmark
Prior art keywords
catalyst
nitric oxide
oxide compounds
converting nitric
converting
Prior art date
Application number
DK96202764T
Other languages
Danish (da)
English (en)
Inventor
Gosse Boxhoorn
Mark Crocker
Der Grift Carl Johan Gerri Van
Original Assignee
Shell Int Research
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 Shell Int Research filed Critical Shell Int Research
Application granted granted Critical
Publication of DK0768110T3 publication Critical patent/DK0768110T3/da

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    • 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
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • 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
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/28—Molybdenum
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/30—Tungsten
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2042—Barium
    • 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
    • B01D2255/20723—Vanadium
    • 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
    • B01D2255/2073—Manganese
    • 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
    • B01D2255/20769—Molybdenum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/91—NOx-storage component incorporated in the 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/613—10-100 m2/g
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/633—Pore volume less than 0.5 ml/g
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/635—0.5-1.0 ml/g
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/647—2-50 nm
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/651—50-500 nm
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/66—Pore distribution
    • B01J35/69—Pore distribution bimodal
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S502/00—Catalyst, solid sorbent, or support therefor: product or process of making
    • Y10S502/525—Perovskite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
DK96202764T 1995-10-09 1996-10-03 Katalysator og fremgangsmåde til omdannelse af nitrogenoxidforbindelser DK0768110T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95202713 1995-10-09

Publications (1)

Publication Number Publication Date
DK0768110T3 true DK0768110T3 (da) 2002-05-27

Family

ID=8220701

Family Applications (1)

Application Number Title Priority Date Filing Date
DK96202764T DK0768110T3 (da) 1995-10-09 1996-10-03 Katalysator og fremgangsmåde til omdannelse af nitrogenoxidforbindelser

Country Status (7)

Country Link
US (1) US6419889B1 (cs)
EP (1) EP0768110B1 (cs)
JP (1) JPH09122500A (cs)
KR (2) KR100426542B1 (cs)
DE (1) DE69619327T2 (cs)
DK (1) DK0768110T3 (cs)
NL (1) NL1004224C2 (cs)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100314758B1 (ko) * 1999-10-19 2001-11-15 이종훈 배기가스에 함유된 질소산화물 제거용 오산화바나듐계 촉매 및그 제조방법
JP2004502807A (ja) * 2000-07-03 2004-01-29 ビーエーエスエフ アクチェンゲゼルシャフト 改良された触媒およびポリテトラヒドロフランの製法
KR100533877B1 (ko) * 2003-05-03 2005-12-29 동양종합건설 주식회사 다이옥신을 포함한 방향족할로겐화합물, 일산화탄소 및질소산화물을 제거하는 촉매 및 이의 용도
KR100840721B1 (ko) 2007-04-02 2008-06-23 아주대학교산학협력단 산화질소 제거용 촉매의 제조방법 및 이로부터 제조된산화질소 제거용 촉매
US20110116999A1 (en) * 2008-03-25 2011-05-19 Yasuyoshi Kato Exhaust gas purification catalyst on which influence of iron compound has been suppressed
US8758711B2 (en) * 2010-12-20 2014-06-24 Mitsubishi Heavy Industries, Ltd. Carrier for NOx reduction catalyst
US9242211B2 (en) 2011-05-30 2016-01-26 The Babcock & Wilcox Company Catalysts possessing an improved resistance to poisoning
EP3202495B1 (en) * 2014-10-02 2025-11-26 Cataler Corporation Exhaust-gas purification catalyst
TWI618578B (zh) 2015-05-15 2018-03-21 Sachtleben Chemie Gmbh 粉狀氧化鈦、其製備方法及其用途
EP3377198A1 (en) 2015-11-18 2018-09-26 Shell Internationale Research Maatschappij B.V. Improved process for removing nox from exhaust gas
EP3393629B1 (en) 2015-12-22 2021-01-20 Shell Internationale Research Maatschappij B.V. A catalyst bed and method for reducing nitrogen oxides
CN108472583A (zh) * 2015-12-22 2018-08-31 国际壳牌研究有限公司 一种用于减少氮氧化物的反应器
US11020732B2 (en) 2015-12-22 2021-06-01 Shell Oil Company Catalyst bed and method for reducing nitrogen oxides
US20180272318A1 (en) * 2016-09-12 2018-09-27 The Chugoku Electric Power Co., Inc. Denitration catalyst and method for producing the same
CN112638504A (zh) 2018-08-22 2021-04-09 国际壳牌研究有限公司 选择性催化还原方法和使方法的失活的催化剂再生的方法
JP2021533989A (ja) 2018-08-22 2021-12-09 シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー 並列煙道ガス処理システムの不活性化されたscr触媒を再生する選択的触媒還元プロセスおよび方法
JP2021534961A (ja) 2018-08-22 2021-12-16 シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー 選択的触媒還元プロセスおよびそのプロセスの不活性化触媒のオフライン再生
US11839851B2 (en) 2021-05-10 2023-12-12 Shell Usa, Inc. Reactor system including a catalyst bed module and process for the selective catalytic reduction of nitrogen oxides contained in gas streams
WO2026075873A1 (en) 2024-10-04 2026-04-09 Shell Usa, Inc. Exhaust gas processing system and method

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061596A (en) * 1974-12-02 1977-12-06 Mitsubishi Chemical Industries Ltd. Process for preparing titanium oxide shaped carrier
GB1541928A (en) * 1975-12-23 1979-03-14 Sakai Chemical Industry Co Production of shaped catalysts or carriers comprising titanium oxide
JPS5915022B2 (ja) * 1976-03-26 1984-04-07 株式会社日立製作所 排ガス中の窒素酸化物除去用触媒
CA1291743C (en) * 1986-07-25 1991-11-05 Makoto Imanari Catalyst for removing nitrogen oxides in exhaust gases
CA1310005C (en) 1986-09-13 1992-11-10 Hiroaki Rikimaru Catalyst and a method for denitrizing nitrogen oxides contained in waste gases
CA1297470C (en) 1986-09-30 1992-03-17 Hiroaki Rikimaru Catalyst and a method for denitrizing nitrogen oxides contained in waste gases
JPH0817939B2 (ja) * 1986-11-19 1996-02-28 三菱化学株式会社 排煙脱硝触媒
JP2583911B2 (ja) * 1987-10-26 1997-02-19 バブコツク日立株式会社 窒素酸化物除去用触媒
DE3736478A1 (de) * 1987-10-28 1989-05-11 Huels Chemische Werke Ag Verfahren zur herstellung eines gegen arsenvergiftung resistenten katalysators zur entfernung von stickoxiden aus abgasen
JP2653799B2 (ja) * 1987-11-16 1997-09-17 バブコツク日立株式会社 窒素酸化物の除去方法および該方法に用いる触媒
US5225390A (en) * 1988-02-23 1993-07-06 Siemens Aktiengesellschaft Catalyst for reducing nitrogen oxides
DE3805564A1 (de) * 1988-02-23 1989-08-31 Siemens Ag Katalysator zur minderung der stickoxide und verfahren zu seiner herstellung
DE3816599C1 (en) * 1988-05-14 1989-03-16 Huels Ag, 4370 Marl, De Process for eliminating arsenic compounds from exhaust gases
US5169619A (en) * 1988-05-28 1992-12-08 Sakai Chemical Industry Co., Ltd. Method of producing titanium oxides
US5137855A (en) * 1988-06-09 1992-08-11 W. R. Grace & Co.-Conn. Catalysts for selective catalytic reduction denox technology
US4929586A (en) * 1988-06-09 1990-05-29 W. R. Grace & Co.-Conn. Catalysts for selective catalytic reduction DeNOx technology
US5198403A (en) * 1989-02-28 1993-03-30 Degussa Ag Process for producing a catalyst for selective reduction of nitrous oxides with ammonia
DE3906136C1 (cs) * 1989-02-28 1990-08-09 Degussa Ag, 6000 Frankfurt, De
GB8906726D0 (en) 1989-03-23 1989-05-10 Shell Int Research Titania extrudates
DE4012479A1 (de) * 1990-04-19 1991-10-24 Degussa Titandioxidpresslinge, verfahren zu ihrer herstellung sowie ihre verwendung
RU1799287C (ru) * 1990-09-17 1993-02-28 Институт катализа СО РАН Способ очистки газов от оксидов азота
FR2684899B1 (fr) * 1991-12-16 1994-03-25 Rhone Poulenc Chimie Catalyseur de reduction selective des oxydes d'azote contenus dans un flux gazeux et application desdits catalyseurs.
JP3352494B2 (ja) * 1993-03-25 2002-12-03 三井鉱山株式会社 窒素酸化物分解触媒及びそれを用いた脱硝方法
DE4321555C1 (de) * 1993-06-29 1994-09-15 Bayer Ag Verfahren zur Herstellung von Mischoxidpulvern für Entstickungskatalysatoren

Also Published As

Publication number Publication date
DE69619327D1 (de) 2002-03-28
KR100426542B1 (ko) 2004-06-12
US6419889B1 (en) 2002-07-16
EP0768110A1 (en) 1997-04-16
EP0768110B1 (en) 2002-02-20
NL1004224A1 (nl) 1996-11-08
KR970020184A (ko) 1997-05-28
KR100213183B1 (ko) 1999-08-02
DE69619327T2 (de) 2002-07-18
NL1004224C2 (nl) 1997-01-13
JPH09122500A (ja) 1997-05-13
KR970020188A (ko) 1997-05-28

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