NO950854L - Selective catalytic reduction of nitrogen oxides - Google Patents
Selective catalytic reduction of nitrogen oxidesInfo
- 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
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title abstract 9
- 238000010531 catalytic reduction reaction Methods 0.000 title 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910021536 Zeolite Inorganic materials 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 2
- 239000010457 zeolite Substances 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000011946 reduction process Methods 0.000 abstract 1
- 229910052703 rhodium Inorganic materials 0.000 abstract 1
- 239000010948 rhodium Substances 0.000 abstract 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
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
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- 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.
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)
| 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 |
| PL2611524T3 (en) | 2010-09-03 | 2014-10-31 | Univ Danmarks Tekniske | Catalyst with a heteropolyacid as a promoter for SCR NOx with ammonia |
Family Cites Families (3)
| 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 |
-
1995
- 1995-03-03 NO NO950854A patent/NO950854L/en unknown
-
1996
- 1996-03-01 AU AU49590/96A patent/AU4959096A/en not_active Abandoned
- 1996-03-01 WO PCT/NO1996/000048 patent/WO1996027428A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996027428A1 (en) | 1996-09-12 |
| AU4959096A (en) | 1996-09-23 |
| NO950854D0 (en) | 1995-03-03 |
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