WO1997021482A1 - VERFAHREN ZUR REDUKTION VON NOx AUS ABGASEN - Google Patents
VERFAHREN ZUR REDUKTION VON NOx AUS ABGASEN Download PDFInfo
- Publication number
- WO1997021482A1 WO1997021482A1 PCT/EP1996/005532 EP9605532W WO9721482A1 WO 1997021482 A1 WO1997021482 A1 WO 1997021482A1 EP 9605532 W EP9605532 W EP 9605532W WO 9721482 A1 WO9721482 A1 WO 9721482A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gases
- mixtures
- heterogeneous catalysts
- reduction
- copper
- Prior art date
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
-
- 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
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/80—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
-
- 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
-
- 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
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- 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
- B01J23/005—Spinels
-
- 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
-
- 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
- B01D2255/20715—Zirconium
-
- 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
- B01D2255/20746—Cobalt
-
- 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
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/40—Mixed oxides
- B01D2255/405—Spinels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- 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
- Y10S502/524—Spinel
Definitions
- the present invention relates to a process for the catalytic re ⁇ uktion of NO, N0 2 or their mixtures in exhaust gases, in particular combustion exhaust gases and in particular Veragenungsgasgen of internal combustion engines, which are operated with air, preferably in excess, such as these.
- - Mixer mix engines using hydrocarbons, carbon monoxide, hydrogen or their mixtures as reducing agents.
- the nitrogen oxide emissions 1 " 1 in modern industrial sites” 1 are determined by the emitters of traffic, fossil-fired power plants and industrial plants. While the power plant and industrial emissions decrease due to the construction of corresponding exhaust gas systems, the share of traffic always decreases more in the foreground.
- the nitrogen oxides known from We.se can be required by means of a three-way catalyst at stommomet ⁇ scner Fanrweise: '' earth, whereby c_e unused or partially untreated grain Components of the exhaust gas as a reducing agent for the nitrogen oxides formed ideally in a stoichiometric ratio to the available.
- lean-mix engines speaks for their consumption advantage over engines with lambda control and three-way catalytic converters.
- catalysts containing noble metals are known, in which the reduction of the amount of nitrogen in the presence of oxygen produces all laughing gas (N 2 O).
- the present invention was based on the object of eliminating the disadvantages mentioned above.
- a new and improved process for reducing KOv in which x stands for 1 and 2, from exhaust gases on ketrogen catalysts with hydrocarbons, carbon monoxide, hydrogen or cerium mixtures in the presence of oxygen at a temperature of 100 to 650 ° C and found an absolute pressure of 0.5 to 50 bar, which is characterized by ⁇ a ⁇ urc ⁇ that birro ⁇ ale or honermodaie compounds of the general formula I are used as heterogeneous catalysts
- M is aluminum, gallium, indium, tin, chromium, manganese, iron, cobalt, nickel, copper, zinc or mixtures thereof and x is 0 to 0.99,
- Aere oxygen atoms in a cubic serving kugeipack are un ⁇ A m ⁇ en tetrahedral vacancies un ⁇ M in ⁇ en octahedral vacuums, where A can also occupy octahedral vacuums if an equivalent amount of M occupies tetrahedron luc ⁇ en,
- a lean mix engine is exited, for example, after leaving the gasturoire, the engine or ⁇ -acn after leaving the turbo charger at a temperature of 100 to 650 ° C., preferably at 150 to 550 ° C., particularly preferably at 200 to 500 ° C, msbeson ⁇ ere 300 to 450 ° C and an absolute pressure of 0.5 to 50 bar, preferably 1 to 20 bar, particularly preferably 1 to 6 bar, in particular 1 to 3 oar and in general a GHSV (Gas Hourly Space Velocity) from 1000 to 200000 (Nl gas) / (1 cat • h), preferably 2000 to 150,000 C ⁇ l gas) / (1 cat • h), particularly preferably 5000 DIS
- the Kata_ / sator can daoei m the form of pellets, but preferably m a Wa ⁇ present benstrktur.
- the catalyst structure can be produced by extrusion of the catalytic mass into honeycomb bodies with three, four, polygonal or round honeycomb channels or by coating supports shaped in this way with the catalytic mass.
- honeycomb structure is to be chosen such that the R ⁇ contained in the exhaust gas does not ß on the honeycomb structure down beat and da ⁇ with too ⁇ réelleoDfitch the honeycomb leads ⁇ es
- the nitrogen oxides are reduced and simultaneously the oxidised in the gas Kohlenwasserstofte and CO contained Zar reduction of nitrogen oxides to the Exhaust gas Hydrocarbons are preferably metered into motor fuel, but ⁇ artigably c-ne "but also the cone water contained in the exhaust gas Substances and the CO they contain are sufficient for the reduction.
- Suitable catalysts are those which can be prepared as follows:
- bimodal or honermodier preferably bimo eel, trimodal and tetramodal, particularly preferably bimodal and ⁇ -trimodal, in particular bimodal, heterogeneous catalysts are generally divided according to the following Prmzm-
- the resulting oxide as a rule, has the general composition M ? 0, MO, M : 0 3 or mixtures thereof, has a b- ⁇ odale o ⁇ er honer-mocaie pore distribution.
- Component A can either be impregnated (impregnated) or added to the mixture described above, kneaded, extruded and co-extruded. After calcination, an oxide of the normal composition AM 2 0 4 results, where A has the valences -2 +4 and +6 and M ⁇ ie valences +1, +2 and +3 ⁇ ann. These oxides, ⁇ .e essentially have a spinel, inverse spinel or defenspell structure, have bimo ⁇ al or high-modal pore distributions.
- the oxides of the formal composition AM: 0 4 can preferably be admixed with one or more further elements of A, that is to say A ', A'',A'' etc., for example by drinking, mechanical mixing or spraying, where after one or more, preferably a renewed, calibration step a solid (oxide) is formed, the general composition (AA ') M 2 ⁇ 4 , M (AA') M) 0 4 , (AA ') o, 9 9 - 0 , M 2 ⁇ 4 , (AA'A '') M 2 0 4 , M (AA'A '') M) 0 constructive, (AA'A '') 0 , 99 - 0 0l M 2 O 4 , (AA'A '' A ''') M 2 0 4 , M (AA'A''A''') M) 0 4 , (AA'A ''') 0 4 , (AA'A ''') 0
- the calcinations are typically at temperatures of 300 to 1300 ° C, preferably 500 to 1200 ° C, before besoncers Trains t ⁇ 600 to 1100 ° C and a pressure of 0.1 to 200 bar, vorzugt 0.5 to 10 bar, particularly preferably carried out at normal pressure (atmospheric pressure).
- the oxidic solids obtained are partially or completely - ie 1 to 100% by weight, preferably 10 to 90% by weight, particularly preferably 20 to 70% by weight, spinels AM 2 0., Inverse parts M (AM) 0 4 or possibly defective spinels of the composition A ⁇ _ x M 2 0 4 in an M 2 0 3 matrix or defective inverse spinels of the composition M (A ! - x M) 0 .; in an M 2 O 3 matrix.
- Aluminum, gallium, indium, tin, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc or mixtures thereof are suitable as element M in the oxides of the composition A 1 - x O • M 2 O 3 . adds aluminum, gallium, manganese, iron, cobalt, nickel or their mixtures, particularly preferably aluminum and gallium, in particular aluminum.
- the index x means 0 to 0.99, preferably 0 or 0.6 to 0.01, particularly preferably 0 or 0.5 to 0.05,
- Magnesium, calcium, scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or mixtures thereof are preferred as elements A in the oxides of the composition Ai_ >: 0 • M 2 0 3 in the oxidation state +2 such as Mg 2+ , Ca 2+ , Ti 2+ , V 2+ , Cr 2+ , Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Zn 2+ , Sn 2+ and Cu 2+ or mixtures thereof, particularly preferably Mg 2+ , Ca 2+ , Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Zn 2+ , Sn 2+ and Cu 2+ or mixtures thereof, in particular Zn 2+ , Mg 2+ , Co 2+ , Ni 2+ and Cu 2+ or mixtures thereof.
- salt-like compounds are carbonates, hydroxides, carboxylates, halides, halogenates, nitrites, nitrates, sulfites, sulfates, phosphites, phosphates, pyrophosphates, halogenites, halogenates and basic carbonates, preferably carbonates, hydroxides, carboxylates, nitrates , Nitrite, sul- fate, phosrinates and basic carbonates are particularly preferably called caroonates, hydroxides, basic carbonates and nitrates.
- the catalysts of the invention are bimodal. Bimo ⁇ al in the sense of the invention means that it contains mesopores (pore diameter ⁇ 50 nm) and macropores (pore diameter 0.05-50 ⁇ m).
- the proportion of mesopores, based on the total pore volume of the catalysts according to the invention is between 40 and 99% by volume. , preferably between 50 and 98% by volume, particularly preferably between 55 and 95% by volume.
- the proportion of macropores, based on the total pore volume of the catalysts according to the invention is between 1 and 60% by volume, preferably between 2 and 50% by volume, particularly preferably between 5 and 45% by volume.
- the catalysts of the invention can also be high modal, i.e.
- the proportion of pores with a diameter> 50 ⁇ m generally lies between 0.1 and 20% by volume, preferably between 1 and 15% by volume, particularly preferably between 2 and 10% by volume, the above mentioned Percentages for mesopores and macropores apply to this case, but are based on the total pore volume minus the volume of the pores with a diameter of> 50 ⁇ rr.
- the BET surface areas of the catalysts according to the invention are between 1 and 350 m 2 / g, preferably between 10 and 200 m 2 / g, more preferably between 30 and 140 m 2 / g, the porosities between 0.01 and 0.8 ml / g, preferably between 0.05 and 0.7 ml / g, particularly preferably between 0.1 and 0.6 rru / g
- the material obtained after the Ca. cimer has a surface (measured after BET) of 106 m 2 / g. Formally it has the composition Cu 0 , i 5 Co 0 i 7 Al 2 0 4 and shows in the X-ray diffraction pattern the tymatic transmission lines of a sperm.
- 146 g of the above-described solid monomer with the composition Cuo, i ⁇ Coo, 17AI2O 4 water absorption: 0.5 rr -. 'G) were washed twice with 36.5 ml of a nitric acid (pH 3) solution, which contained 34 g Zn (N0 3 ) Contains 2 6 H 2 0, impregnated, then left at room temperature for one hour. The impregnated support was dried to constant weight at 120 ° C. and finally calcined at 600 ° C. for 4 hours.
- Diffraction pattern of a Spmelles has the Oberfllacne the catalyst (measured according to BET) is 66 m 2 / g.
- the pore radius distribution was measured using the mercury porosimeter method (DIN 66 133). Approximately 60% by volume of the pore volume is accounted for by pores with a diameter of ⁇ 0.05 ⁇ m, and approximately 30% by volume of the pore volume is accounted for by pores in the range of 0.6 5 ⁇ m (FIG. 1).
- Fi ⁇ 1 the cumulative pore volume (cumuative mtrusion) m ml / g is plotted in ⁇ m over ⁇ em Poumblerc ⁇ ⁇ sser ( ⁇ .araeter)
- a cobalt / copper / Z ⁇ n ⁇ / aluminum-Sp ⁇ nell of the composition Zno, 39 CU 0 , l ⁇ Coo, 17 Al 2 O 4 is used.
- the spinel 10 g of crushed fraction are 1.6 to 2, 0 mn in a sen ⁇ Krecht oriented quartz reactor (Durcr. ⁇ ⁇ eater 20 mm Hone about 500 mm) placed, one at the ⁇ er for holding Prooe in its center gas permeable F ⁇ tte is arranged.
- the scout height is about 15 mm.
- a furnace is arranged around a quartz reactor, and the middle part of the reactor is heated to an emergence of approximately 100 mm. Temperatures up to 550 ° C at a smic.
- a gas mixture with a GHSV of approx. 10,000 (Nl gas) / 1 cat-h) which consists of 1000 ppm NO, 1000 ppm propene, 10% oxygen and arcon (rest) as carrier gas.
- the NO concentration is measured with a gas detector, where a possibly formed N0 2 m is reduced to NO before the detection.
- an oxidation of hydrocarbons to C0 2 is observed by measurement of the CO 2 content by the gas detector.
- the result of the measurement is shown in a diagram in FIG. 2.
- the course of the NOv and the C0 2 component m ppm is plotted as a function of the temperature, the NO concentration being drawn with the thicker line.
- the diagram shows a clear aonanme of the NOv concentration with increasing temperature, which passes through a minimum of 300 450 ° C. and then rises again. At the same time, the co- hydrogenated to C0 2 , as shown by the increase in the C0 2 concentration.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Materials 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)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96945160A EP0866729A1 (de) | 1995-12-13 | 1996-12-11 | VERFAHREN ZUR REDUKTION VON NO x? AUS ABGASEN |
BR9611956-0A BR9611956A (pt) | 1995-12-13 | 1996-12-11 | Processo para a reduçãzo de no x |
US09/077,597 US6153161A (en) | 1995-12-13 | 1996-12-11 | Process for reducing NOx from exhaust fumes |
JP9521736A JP2000501985A (ja) | 1995-12-13 | 1996-12-11 | 排気ガス中のNO▲下x▼の還元方法 |
AU28461/97A AU2846197A (en) | 1995-12-13 | 1996-12-11 | Process for reducing NOx from exhaust fumes |
KR1019980704431A KR19990072116A (ko) | 1995-12-13 | 1996-12-11 | 배기 가스 중의 nox의 환원 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19546612.8 | 1995-12-13 | ||
DE19546612A DE19546612A1 (de) | 1995-12-13 | 1995-12-13 | Verfahren zur Reduktion von NOx aus Abgasen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997021482A1 true WO1997021482A1 (de) | 1997-06-19 |
Family
ID=7780059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/005532 WO1997021482A1 (de) | 1995-12-13 | 1996-12-11 | VERFAHREN ZUR REDUKTION VON NOx AUS ABGASEN |
Country Status (10)
Country | Link |
---|---|
US (1) | US6153161A (de) |
EP (1) | EP0866729A1 (de) |
JP (1) | JP2000501985A (de) |
KR (1) | KR19990072116A (de) |
CN (1) | CN1208361A (de) |
AU (1) | AU2846197A (de) |
BR (1) | BR9611956A (de) |
CZ (1) | CZ168898A3 (de) |
DE (1) | DE19546612A1 (de) |
WO (1) | WO1997021482A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US6723295B1 (en) * | 1998-10-21 | 2004-04-20 | Basf Aktiengesellschaft | High-temperature stabile catalysts for decomposing N2O |
US7264784B2 (en) | 2003-10-22 | 2007-09-04 | Nippon Shokubai Co., Ltd. | Method for treating exhaust gas |
EP2165760A3 (de) * | 1996-03-21 | 2010-05-12 | Basf Catalysts Llc | Kupfer-Aluminium Mischoxid Katalysator, seine Herstellung und seine Verwendungen |
CN101733090A (zh) * | 2009-12-16 | 2010-06-16 | 陕西科技大学 | 一种以W掺杂的TiO2为载体的低温SCR催化剂及其制备方法 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
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IT1285562B1 (it) * | 1996-02-12 | 1998-06-18 | Univ Bologna | Composti ad attivita' di fissaggio di gas |
KR20010043862A (ko) * | 1998-05-29 | 2001-05-25 | 칼 하인쯔 호르닝어 | 디젤 엔진 배기 가스 정화 방법 |
JP5072136B2 (ja) * | 1998-07-24 | 2012-11-14 | 千代田化工建設株式会社 | 多孔性スピネル型複合酸化物の製造方法 |
JP2001046872A (ja) * | 1999-08-11 | 2001-02-20 | Mitsubishi Heavy Ind Ltd | メタノール改質触媒、メタノール改質触媒の製造方法及びメタノール改質方法 |
NO313494B1 (no) * | 2000-07-05 | 2002-10-14 | Norsk Hydro As | Katalysator for spalting av dinitrogenoksid og fremgangsmåte ved utförelse av prosesser hvor det dannes dinitrogenoksid |
DE10061553A1 (de) * | 2000-12-11 | 2002-06-13 | Basf Ag | Poröser Katalysator für die Hydrierung von Maleinsäureanhydrid zu Tetrahydrofuran |
JP2002253968A (ja) * | 2001-03-02 | 2002-09-10 | Toyota Central Res & Dev Lab Inc | 排ガス浄化用触媒 |
US20040105804A1 (en) * | 2002-11-29 | 2004-06-03 | Industrial Technology Research Institute | Catalyst for water-gas shift reaction and method for converting carbon monoxide and water to hydrogen and carbon dioxide |
US6979430B2 (en) * | 2002-12-18 | 2005-12-27 | Foster Wheeler Energy Corporation | System and method for controlling NOx emissions from boilers combusting carbonaceous fuels without using external reagent |
US7399729B2 (en) * | 2003-12-22 | 2008-07-15 | General Electric Company | Catalyst system for the reduction of NOx |
ITMI20042455A1 (it) * | 2004-12-22 | 2005-03-22 | Sued Chemie Mt Srl | Procedimento per la rimozione di ossidi di azoto con materiale absorbente di ossidi stessi |
KR100655133B1 (ko) * | 2005-03-02 | 2006-12-08 | 아주대학교산학협력단 | 산화질소 제거용 금속산화물 촉매 및 그 제조방법 |
EP2218501A4 (de) * | 2007-10-23 | 2014-01-29 | Cataler Corp | Abgasreinigungskatalysator |
US20090145742A1 (en) * | 2007-12-11 | 2009-06-11 | Northwestern University | Energy transfer through surface plasmon resonance excitation on multisegmented nanowires |
EP2681045A4 (de) | 2011-03-02 | 2015-01-14 | Applied Thin Films Inc | Schützende innenbeschichtungen für poröse substrate |
CA2918039C (en) * | 2013-07-31 | 2022-07-12 | Srikant Gopal | Nitrous oxide decomposition catalyst |
WO2015104056A1 (en) * | 2014-01-09 | 2015-07-16 | Statoil Petroleum As | Catalyst support and catalyst for fischer-tropsch synthesis |
EP3393629B1 (de) * | 2015-12-22 | 2021-01-20 | Shell Internationale Research Maatschappij B.V. | Katalysatorbett und verfahren zur reduktion von stickoxiden |
CN105617857B (zh) * | 2016-01-06 | 2017-12-01 | 昆明理工大学 | 一种ph3选择性低温催化还原no的方法 |
US9861964B1 (en) | 2016-12-13 | 2018-01-09 | Clean Diesel Technologies, Inc. | Enhanced catalytic activity at the stoichiometric condition of zero-PGM catalysts for TWC applications |
WO2019204127A1 (en) * | 2018-04-20 | 2019-10-24 | Aether Catalyst Solutions, Inc. | Copper-cobalt-aluminium mixed metal oxide catalyst; its preparation method and use in a catalytic converter |
US11110432B2 (en) | 2019-12-09 | 2021-09-07 | Toyota Motor Engineering And Manufacturing North America, Inc. | Multi-transition metal doped copper-cobalt spinel catalyst material for NOx decomposition |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3896048A (en) * | 1973-08-20 | 1975-07-22 | Gte Sylvania Inc | Catalyst composition |
EP0210681A1 (de) * | 1985-07-31 | 1987-02-04 | Shell Internationale Researchmaatschappij B.V. | Bivalente Metalle enthaltender Aluminatkatalysator |
WO1992020445A1 (en) * | 1991-05-13 | 1992-11-26 | Imcs Reecat Ab | Re-catalyst and carrier |
DE4301470A1 (de) * | 1993-01-21 | 1994-07-28 | Basf Ag | Verfahren zur katalytischen Zersetzung von reinem oder in Gasgemischen enthaltenem Distickstoffmonoxid |
EP0640391A2 (de) * | 1993-08-11 | 1995-03-01 | TRIDELTA GmbH | Wabenförmiger keramischer Katalysator zur Oxidation von Kohlenwasserstoffen und halogenierten Kohlenwasserstoffen |
EP0676232A1 (de) * | 1994-04-08 | 1995-10-11 | Rhone-Poulenc Chimie | Spinell-enthaltender Katalysator zur Reduktion von Stickstoffoxidemissionen |
EP0685253A1 (de) * | 1994-06-03 | 1995-12-06 | Daimler-Benz Aktiengesellschaft | Katalysator, Verfahren zu dessen Herstellung und Verwendung desselben |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5610334A (en) * | 1979-07-06 | 1981-02-02 | Toyota Motor Corp | Catalyst for cleaning up exhaust gas and manufacture of said catalyst |
NO146046L (de) * | 1980-03-28 | |||
US4790982A (en) * | 1986-04-07 | 1988-12-13 | Katalistiks International, Inc. | Metal-containing spinel composition and process of using same |
DE4420932A1 (de) * | 1994-06-16 | 1996-01-11 | Basf Ag | Material zur katalytischen Reduktion von Stickoxiden |
-
1995
- 1995-12-13 DE DE19546612A patent/DE19546612A1/de not_active Withdrawn
-
1996
- 1996-12-11 WO PCT/EP1996/005532 patent/WO1997021482A1/de not_active Application Discontinuation
- 1996-12-11 US US09/077,597 patent/US6153161A/en not_active Expired - Fee Related
- 1996-12-11 EP EP96945160A patent/EP0866729A1/de not_active Withdrawn
- 1996-12-11 CN CN96199889A patent/CN1208361A/zh active Pending
- 1996-12-11 CZ CZ981688A patent/CZ168898A3/cs unknown
- 1996-12-11 JP JP9521736A patent/JP2000501985A/ja active Pending
- 1996-12-11 AU AU28461/97A patent/AU2846197A/en not_active Abandoned
- 1996-12-11 KR KR1019980704431A patent/KR19990072116A/ko not_active Application Discontinuation
- 1996-12-11 BR BR9611956-0A patent/BR9611956A/pt active Search and Examination
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3896048A (en) * | 1973-08-20 | 1975-07-22 | Gte Sylvania Inc | Catalyst composition |
EP0210681A1 (de) * | 1985-07-31 | 1987-02-04 | Shell Internationale Researchmaatschappij B.V. | Bivalente Metalle enthaltender Aluminatkatalysator |
WO1992020445A1 (en) * | 1991-05-13 | 1992-11-26 | Imcs Reecat Ab | Re-catalyst and carrier |
DE4301470A1 (de) * | 1993-01-21 | 1994-07-28 | Basf Ag | Verfahren zur katalytischen Zersetzung von reinem oder in Gasgemischen enthaltenem Distickstoffmonoxid |
WO1994016798A1 (de) * | 1993-01-21 | 1994-08-04 | Basf Aktiengesellschaft | Verfahren zur katalytischen zersetzung von reinem oder in gasgemischen enthaltenem distickstoffmonoxid |
EP0640391A2 (de) * | 1993-08-11 | 1995-03-01 | TRIDELTA GmbH | Wabenförmiger keramischer Katalysator zur Oxidation von Kohlenwasserstoffen und halogenierten Kohlenwasserstoffen |
EP0676232A1 (de) * | 1994-04-08 | 1995-10-11 | Rhone-Poulenc Chimie | Spinell-enthaltender Katalysator zur Reduktion von Stickstoffoxidemissionen |
EP0685253A1 (de) * | 1994-06-03 | 1995-12-06 | Daimler-Benz Aktiengesellschaft | Katalysator, Verfahren zu dessen Herstellung und Verwendung desselben |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2165760A3 (de) * | 1996-03-21 | 2010-05-12 | Basf Catalysts Llc | Kupfer-Aluminium Mischoxid Katalysator, seine Herstellung und seine Verwendungen |
US6723295B1 (en) * | 1998-10-21 | 2004-04-20 | Basf Aktiengesellschaft | High-temperature stabile catalysts for decomposing N2O |
US7264784B2 (en) | 2003-10-22 | 2007-09-04 | Nippon Shokubai Co., Ltd. | Method for treating exhaust gas |
CN101733090A (zh) * | 2009-12-16 | 2010-06-16 | 陕西科技大学 | 一种以W掺杂的TiO2为载体的低温SCR催化剂及其制备方法 |
CN101733090B (zh) * | 2009-12-16 | 2013-04-03 | 陕西科技大学 | 一种以W掺杂的TiO2为载体的低温SCR催化剂及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
DE19546612A1 (de) | 1997-06-19 |
CN1208361A (zh) | 1999-02-17 |
CZ168898A3 (cs) | 1998-11-11 |
KR19990072116A (ko) | 1999-09-27 |
US6153161A (en) | 2000-11-28 |
JP2000501985A (ja) | 2000-02-22 |
AU2846197A (en) | 1997-07-03 |
EP0866729A1 (de) | 1998-09-30 |
BR9611956A (pt) | 1999-12-28 |
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