DE102004010497A1 - Filter for purifying gas mixtures containing combustible particles, especially engine exhaust gases, has a gas-contacting surface comprising a mixture of silver or copper and one or more oxygen-containing compounds - Google Patents
Filter for purifying gas mixtures containing combustible particles, especially engine exhaust gases, has a gas-contacting surface comprising a mixture of silver or copper and one or more oxygen-containing compounds Download PDFInfo
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- DE102004010497A1 DE102004010497A1 DE102004010497A DE102004010497A DE102004010497A1 DE 102004010497 A1 DE102004010497 A1 DE 102004010497A1 DE 102004010497 A DE102004010497 A DE 102004010497A DE 102004010497 A DE102004010497 A DE 102004010497A DE 102004010497 A1 DE102004010497 A1 DE 102004010497A1
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- Prior art keywords
- filter
- silver
- copper
- oxygen
- compound
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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
- 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
- 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
- B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- 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
- B01D2255/104—Silver
-
- 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
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2250/00—Combinations of different methods of purification
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2370/00—Selection of materials for exhaust purification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/065—Surface coverings for exhaust purification, e.g. catalytic reaction for reducing soot ignition temperature
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Reinigung von Gasgemischen, die brennbare Partikel enthalten, insbesondere von rußhaltigen Abgasen von Verbrennungsmotoren sowie ein Verfahren nach dem Oberbegriff der unabhängigen Ansprüche.The Invention relates to a device for the purification of gas mixtures, containing combustible particles, especially of sooty Exhaust gases of internal combustion engines and a method according to the preamble the independent one Claims.
Die Reinigung von Abgasen, die brennbare, insbesondere kohlenstoffhaltige Partikel enthalten, gewinnt zunehmend an Bedeutung. Zur Reinigung derartiger Gasgemische werden üblicherweise keramische Filtersysteme eingesetzt. Die Herausforderung zur Optimierung derartige Systeme liegt primär nicht in der Filtration selber – viele Partikelfilter ermöglichen eine Abscheidung von mehr als 99 Prozent – sondern in dem dauerhaften und effizienten Einsatz des Filters ohne Verstopfung und ohne einer damit verbundenen übermäßigen Erhöhung des Durchflusswiderstandes über das gesamte Filtersystem.The Purification of waste gases, the flammable, especially carbonaceous Containing particles is becoming increasingly important. For cleaning such Gas mixtures are usually used ceramic filter systems. The challenge for optimization such systems are not primarily in the filtration itself - many Allow particle filter a separation of more than 99 percent - but in the permanent and efficient use of the filter without constipation and without one connected excessively increase the flow resistance over the entire filter system.
Der als Ruß oder Koks abgelagerte Kohlenstoff muss daher in regelmäßigen Intervallen vorzugsweise oxidativ entfernt werden. Die direkte Oxidation von Ruß durch Sauerstoff findet im relevanten Umfang erst bei Temperaturen oberhalb von 600 °C statt. Die Temperatur von Abgasen eines Dieselmotors beträgt beispielsweise in der Regel jedoch nur 150 bis 350 °C. Die Abgastemperatur muss demzufolge durch motorische oder andersartige Maßnahmen zur Regenerierung künstlich erhöht werden. Dies hat insbesondere bei motorischen Maßnahmen einen erhöhten Kraftstoffverbrauch zur Folge und kann die Lebensdauer des Verbrennungsmotors beeinträchtigen. Darüber hinaus werden auch die entsprechenden Filtersysteme durch die hohen Temperaturen geschädigt. Es besteht daher die Notwendigkeit, die Reaktionstemperatur des abgelagerten Rußes künstlich abzusenken.Of the as soot or Coke deposited carbon must therefore be at regular intervals preferably be removed by oxidation. The direct oxidation of Soot through Oxygen finds relevant extent only at temperatures above held by 600 ° C. The temperature of exhaust gases of a diesel engine is, for example usually only 150 to 350 ° C. The exhaust gas temperature must consequently artificially by means of motor or other regenerative measures elevated become. This has an increased fuel consumption, especially in engine measures Result and may affect the life of the engine. About that In addition, the corresponding filter systems by the high Temperatures damaged. There is therefore a need to increase the reaction temperature of the deposited soot artificially lower.
Aus
der
Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur Reinigung von Gasgemischen, die brennbare Partikel enthalten, insbesondere von rußhaltigen Abgasen von Verbrennungsmotoren, bereitzustellen, deren Regenerierung auf einfache Weise schonend durchgeführt werden kann.task It is the object of the present invention to provide a device for cleaning of gas mixtures containing combustible particles, in particular of sooty Exhaust gases from internal combustion engines, provide their regeneration can be carried out gently in a simple manner.
Vorteile der ErfindungAdvantages of invention
Die der Erfindung zugrundeliegende Aufgabe wird in vorteilhafter Weise durch die erfindungsgemäße Vorrichtung mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Dazu weist die Vorrichtung, die als Filter ausgeführt ist, eine dem zu reinigenden Gasgemisch ausgesetzte Oberfläche auf, die eine Mischverbindung von Silber oder Kupfer mit mindestens einer sauerstoffhaltigen Verbindung eines Elementes der vierten Nebengruppe oder der dritten Hauptgruppe oder des Cers, Niobiums, Tantals, Molybdäns, Wolframs, Mangans, Eisens, Siliciums, Germaniums oder Phosphors enthält.The The problem underlying the invention is advantageously by the device according to the invention solved with the characterizing features of claim 1. To has the device, which is designed as a filter, one to be cleaned Gas mixture exposed surface on which a mixed compound of silver or copper with at least an oxygen-containing compound of an element of the fourth Subgroup or the third main group or cerium, niobium, Tantalum, molybdenum, Tungsten, manganese, iron, silicon, germanium or phosphorus contains.
Die Existenz der Mischverbindung in einem oberflächennahen Bereich der dem zu reinigenden Abgas ausgesetzten Oberfläche führt bereits bei Abgastemperaturen im Bereich von 200 bis 400 °C zu einem Oxidationsvorgang der auf dem Filter abgelagerten Rußpartikel und somit zu einer Regenerierung des Filters. Auf den Einsatz giftiger und flüchtiger Oxide kann vorteilhafter Weise verzichtet werden.The Existence of the mixed compound in a near-surface region of the zu surface exposed to cleaning exhaust gas already leads at exhaust gas temperatures in the range of 200 to 400 ° C to an oxidation process of the soot particles deposited on the filter and thus to a regeneration of the filter. On the use of toxic and volatile oxides can be dispensed with advantageously.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der in Anspruch 1 angegebenen Vorrichtung möglich. So enthält die Mischverbindung Silber oder Kupfer in einer unterstöchiometrischen Menge. Da Silber bzw. Kupfer bei höheren Temperaturen leicht freigesetzt werden, ist durch den unterstöchiometrischen Gehalt der beiden Metalle in der Mischverbindung eine bessere Anbindung der Metalle an die Oxidmatrix der Mischverbindung gewährleistet.By in the subclaims listed activities are advantageous developments of specified in claim 1 Device possible. So contains the mixed compound silver or copper in a substoichiometric Amount. Because silver or copper is easily released at higher temperatures is, is by the stoichiometric Content of the two metals in the mixed compound a better connection the metals ensured to the oxide matrix of the mixed compound.
In einer weiteren vorteilhaften Ausführungsform ist die Mischverbindung auf einen Katalysatorträger aufgebracht, der eine BET-Oberfläche von mindestens 10 m2/g aufweist. Durch die große katalytisch aktive Oberfläche ist ein besonders zuverlässiges Zündverhalten der Rußpartikel gewährleistet.In a further advantageous embodiment, the mixed compound is applied to a catalyst support having a BET surface area of at least 10 m 2 / g. The large catalytically active surface ensures a particularly reliable ignition behavior of the soot particles.
Weiterhin ist vorteilhaft, wenn der Katalysatorträger zusätzlich katalytisch aktive Edelmetalle wie Platin, Palladium, Rhodium, Iridium oder Gold enthält.Farther is advantageous if the catalyst support in addition catalytically active noble metals such Platinum, palladium, rhodium, iridium or gold.
In einer besonders vorteilhaften Ausführungsform ist der Katalysatorträger auf einem Filtermaterial aufgebracht, wobei das Filtermaterial aus einem Sintermetall oder aus Edelstahl ausgeführt ist. In diesem Fall wirkt der mit der Mischverbindung versehene Katalysatorträger gleichzeitig als Korrosionsschutz für das Filtermaterial.In In a particularly advantageous embodiment, the catalyst support applied to a filter material, wherein the filter material of a Sintered metal or made of stainless steel. In this case works the catalyst carrier provided with the mixed compound simultaneously as corrosion protection for the filter material.
Zeichnungdrawing
Zwei
Ausführungsbeispiele
der dem erfindungsgemäßen Verfahren
zugrundeliegenden Vorrichtung sind in der Zeichnung dargestellt
und in der nachfolgenden Beschreibung näher erläutert.
Ausführungsbeispieleembodiments
Der
prinzipielle Aufbau einer erfindungsgemäßen Vorrichtung wird im folgenden
beschrieben. Die Vorrichtung zur Reinigung von Gasen ist vorzugsweise
als Filter ausgeführt,
wie er schematisch in den
Der
in
Das
die Wandungen
In
Das
die Wandungen
In
Um
zu erreichen, dass der beschriebene Filter
So
weist die katalytisch aktive Schicht
Eine
weitere Ausführungsform
besteht darin, in der Schicht
Aufgrund der hohen katalytischen Aktivität der genannten Verbindungen kommt es bereits bei relativ niedrigen Abgastemperaturen zur katalytisch induzierten Zündung der Rußpartikel. Um ungünstige Effekte durch einen Überschuss an freigesetztem Silber bzw. Kupfer bei höheren Abgastemperaturen zu vermeiden, ist es insbesondere von Vorteil, wenn die genannten Mischverbindungen Silber und/oder Kupfer in einer unterstöchiometrischen Menge bezogen auf thermodynamisch stabile Zielverbindungen enthalten.by virtue of the high catalytic activity of These compounds already occur at relatively low exhaust gas temperatures for catalytically induced ignition the soot particles. To unfavorable effects by a surplus to avoid released silver or copper at higher exhaust gas temperatures, it is particularly advantageous if the said mixed compounds Silver and / or copper in a stoichiometric amount based on contain thermodynamically stable target compounds.
Beispiele für geeignete sauerstoffhaltige Ausgangsverbindungen, die mit Silber oder Kupfer entsprechende Mischverbindungen bilden sind beispielsweise TiO2, ZrO2, MoO3, WO3, Mn2O3, GeO2, B2O3 sowie Mischoxide derselben oder Mischoxide derselben mit Oxiden wie SiO2, Al2O3 oder CeO2. Beispiele für die dabei resultierenden Mischverbindungen sind Ag2MoxO(3x1), Ag2WxO(3x1), CuMoO4, CuWO4, AgMn2O4, AgBO2, Silber- oder Kupferalumosilikate.Examples of suitable oxygen-containing starting compounds which form mixed compounds corresponding to silver or copper are, for example, TiO 2 , ZrO 2 , MoO 3 , WO 3 , Mn 2 O 3 , GeO 2 , B 2 O 3 and mixed oxides thereof or mixed oxides thereof with oxides such as SiO 2 2 , Al 2 O 3 or CeO 2 . Examples of the resulting mixed compounds are Ag 2 Mo x O (3x1) , Ag 2 W x O (3x1) , CuMoO 4 , CuWO 4 , AgMn 2 O 4 , AgBO 2 , silver or copper aluminosilicates.
Die
auf diese Weise erzeugten Mischverbindungen werden als katalytisch
aktive Verbindungen vorzugsweise auf einen Katalysatorträger
Eine
weitere Möglichkeit
besteht darin, als Grundmaterial des Katalysatorträgers
Die
katalytische Aktivität
der katalytisch aktiven Schicht
Der Gesamtgehalt des mischverbindungshaltigen Katalysatorträgers an Kupfer und/oder Silber beträgt zwischen 1 und 40 Gew.%, der Gehalt der sauerstoffhaltigen Ausgangsverbindung 1 bis 99 Gew.% und der Gehalt an Katalysatorträgermaterial je nach Ausführungsform 0 bis 98 Gew.%.Of the Total content of mixed compound containing catalyst carrier Copper and / or silver amounts between 1 and 40 wt.%, The content of the oxygen-containing starting compound 1 to 99 wt.% And the content of catalyst support material depending on the embodiment 0 to 98% by weight.
Die
Erfindung ist nicht auf die in
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004010497A DE102004010497A1 (en) | 2004-03-04 | 2004-03-04 | Filter for purifying gas mixtures containing combustible particles, especially engine exhaust gases, has a gas-contacting surface comprising a mixture of silver or copper and one or more oxygen-containing compounds |
IT000312A ITMI20050312A1 (en) | 2004-03-04 | 2005-03-02 | DEVICE FOR PURIFICATION OF GASOUS MIXTURES AND ITS MANUFACTURING PROCEDURE |
FR0550562A FR2868334B1 (en) | 2004-03-04 | 2005-03-03 | DEVICE FOR PURIFYING GASEOUS MIXTURES AND METHOD FOR MANUFACTURING SUCH A DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004010497A DE102004010497A1 (en) | 2004-03-04 | 2004-03-04 | Filter for purifying gas mixtures containing combustible particles, especially engine exhaust gases, has a gas-contacting surface comprising a mixture of silver or copper and one or more oxygen-containing compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004010497A1 true DE102004010497A1 (en) | 2005-09-22 |
Family
ID=34877337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004010497A Withdrawn DE102004010497A1 (en) | 2004-03-04 | 2004-03-04 | Filter for purifying gas mixtures containing combustible particles, especially engine exhaust gases, has a gas-contacting surface comprising a mixture of silver or copper and one or more oxygen-containing compounds |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE102004010497A1 (en) |
FR (1) | FR2868334B1 (en) |
IT (1) | ITMI20050312A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2939328A3 (en) * | 2008-12-09 | 2010-06-11 | Renault Sas | Catalytic material, useful for combustion of carbon residues, comprises a mixture of silver oxide and manganese oxide |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5116271A (en) * | 1974-07-31 | 1976-02-09 | Asahi Chemical Ind | |
JPS61252821A (en) * | 1985-05-02 | 1986-11-10 | Toyota Motor Corp | Filter for collecting particulates |
JPS6220613A (en) * | 1985-07-19 | 1987-01-29 | Cataler Kogyo Kk | Catalyst filter for removal of particulate |
JPH069659B2 (en) * | 1986-08-22 | 1994-02-09 | トヨタ自動車株式会社 | Patty unit for burning catalyst filter |
JPS63310615A (en) * | 1987-06-12 | 1988-12-19 | Toyota Motor Corp | Particulate collecting filter |
DE4008371A1 (en) * | 1989-03-15 | 1990-09-20 | Riken Kk | EXHAUST GASOLINE AND METHOD FOR CLEANING EXHAUST GASES |
EP0577438B1 (en) * | 1992-07-03 | 2001-05-16 | Kabushiki Kaisha Riken | Exhaust gas cleaner and method of cleaning exhaust gas |
EP0710499A3 (en) * | 1994-11-04 | 1997-05-21 | Agency Ind Science Techn | Exhaust gas cleaner and method for cleaning exhaust gas |
US5714130A (en) * | 1994-11-28 | 1998-02-03 | Kabushiki Kaisha Riken | Exhaust gas cleaner and method for cleaning exhaust gas |
US5741468A (en) * | 1994-12-28 | 1998-04-21 | Kabushiki Kaisha Riken | Exhaust gas cleaner and method for cleaning exhaust gas |
US6037307A (en) * | 1998-07-10 | 2000-03-14 | Goal Line Environmental Technologies Llc | Catalyst/sorber for treating sulfur compound containing effluent |
EP1378288A3 (en) * | 2002-04-18 | 2004-01-14 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Platinum-group-metal free catalytic washcoats for particulate exhaust gas filter applications |
-
2004
- 2004-03-04 DE DE102004010497A patent/DE102004010497A1/en not_active Withdrawn
-
2005
- 2005-03-02 IT IT000312A patent/ITMI20050312A1/en unknown
- 2005-03-03 FR FR0550562A patent/FR2868334B1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2939328A3 (en) * | 2008-12-09 | 2010-06-11 | Renault Sas | Catalytic material, useful for combustion of carbon residues, comprises a mixture of silver oxide and manganese oxide |
Also Published As
Publication number | Publication date |
---|---|
FR2868334B1 (en) | 2008-02-22 |
ITMI20050312A1 (en) | 2005-09-05 |
FR2868334A1 (en) | 2005-10-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8141 | Disposal/no request for examination | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20110305 |