NO950854L - Selective catalytic reduction of nitrogen oxides - Google Patents

Selective catalytic reduction of nitrogen oxides

Info

Publication number
NO950854L
NO950854L NO950854A NO950854A NO950854L NO 950854 L NO950854 L NO 950854L NO 950854 A NO950854 A NO 950854A NO 950854 A NO950854 A NO 950854A NO 950854 L NO950854 L NO 950854L
Authority
NO
Norway
Prior art keywords
nitrogen oxides
present
selective reduction
catalytic reduction
selective catalytic
Prior art date
Application number
NO950854A
Other languages
Norwegian (no)
Other versions
NO950854D0 (en
Inventor
Erik Fareid
Knut Ingvar Aasen
Lars L Lauritsen
Original Assignee
Norsk Hydro As
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 Norsk Hydro As filed Critical Norsk Hydro As
Priority to NO950854A priority Critical patent/NO950854L/en
Publication of NO950854D0 publication Critical patent/NO950854D0/en
Priority to AU49590/96A priority patent/AU4959096A/en
Priority to PCT/NO1996/000048 priority patent/WO1996027428A1/en
Publication of NO950854L publication Critical patent/NO950854L/en

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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/76—Iron group metals or copper
    • B01J29/7615—Zeolite Beta
    • 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
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/74—Noble metals
    • B01J29/7415—Zeolite Beta
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Foreliggende oppfinnelse vedrører en katalysator for selektiv reduksjon av nitrogenoksider og omfatter også av en fremgangsmåte for selektiv reduksjon av nitrogenoksider i avgasser inneholdende oksygen, enten alene eller i kombinasjon med en ikke-katalytisk selektiv reduksjonsprosess. Katalysatoren inneholder en p-zeolitt med et silisiumdioksid til aluminiumoksid forhold på minst 10 og en gjennomsnittlig kinetisk porediameter på minst 5 Ångstrøm. En kobber-promotor er tilstede i en mengde på 0.1-10 vekt% av zeolitten og en palladium- eller rhodium-promotor er tilstede i en mengde på 0.01-1.0 vekt%.The present invention relates to a catalyst for the selective reduction of nitrogen oxides and also comprises a process for the selective reduction of nitrogen oxides in exhaust gases containing oxygen, either alone or in combination with a non-catalytic selective reduction process. The catalyst contains a β-zeolite with a silica to alumina ratio of at least 10 and an average kinetic pore diameter of at least 5 angstroms. A copper promoter is present in an amount of 0.1-10% by weight of the zeolite and a palladium or rhodium promoter is present in an amount of 0.01-1.0% by weight.

NO950854A 1995-03-03 1995-03-03 Selective catalytic reduction of nitrogen oxides NO950854L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO950854A NO950854L (en) 1995-03-03 1995-03-03 Selective catalytic reduction of nitrogen oxides
AU49590/96A AU4959096A (en) 1995-03-03 1996-03-01 Selective catalytic reduction of nitrogen oxides
PCT/NO1996/000048 WO1996027428A1 (en) 1995-03-03 1996-03-01 Selective catalytic reduction of nitrogen oxides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO950854A NO950854L (en) 1995-03-03 1995-03-03 Selective catalytic reduction of nitrogen oxides

Publications (2)

Publication Number Publication Date
NO950854D0 NO950854D0 (en) 1995-03-03
NO950854L true NO950854L (en) 1996-09-04

Family

ID=19897985

Family Applications (1)

Application Number Title Priority Date Filing Date
NO950854A NO950854L (en) 1995-03-03 1995-03-03 Selective catalytic reduction of nitrogen oxides

Country Status (3)

Country Link
AU (1) AU4959096A (en)
NO (1) NO950854L (en)
WO (1) WO1996027428A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6761868B2 (en) 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US6887449B2 (en) 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
EP2611524B1 (en) 2010-09-03 2014-04-30 Danmarks Tekniske Universitet HETEROPOLY ACID PROMOTED CATALYST FOR SCR OF NOx WITH AMMONIA

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961917A (en) * 1989-04-20 1990-10-09 Engelhard Corporation Method for reduction of nitrogen oxides with ammonia using promoted zeolite catalysts
US5329057A (en) * 1991-04-19 1994-07-12 The Dow Chemical Company Process for the cyclodimerization of 1,3-butadienes to 4-vinylcyclohexenes
US5316661A (en) * 1992-07-08 1994-05-31 Mobil Oil Corporation Processes for converting feedstock organic compounds

Also Published As

Publication number Publication date
NO950854D0 (en) 1995-03-03
AU4959096A (en) 1996-09-23
WO1996027428A1 (en) 1996-09-12

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