DE10133231B4 - Oxidation catalyst for exhaust gases of an internal combustion engine - Google Patents
Oxidation catalyst for exhaust gases of an internal combustion engine Download PDFInfo
- Publication number
- DE10133231B4 DE10133231B4 DE2001133231 DE10133231A DE10133231B4 DE 10133231 B4 DE10133231 B4 DE 10133231B4 DE 2001133231 DE2001133231 DE 2001133231 DE 10133231 A DE10133231 A DE 10133231A DE 10133231 B4 DE10133231 B4 DE 10133231B4
- Authority
- DE
- Germany
- Prior art keywords
- catalyst
- oxidation catalyst
- filter
- coating
- washcoat
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 60
- 230000003647 oxidation Effects 0.000 title claims abstract description 23
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 title claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910052703 rhodium Inorganic materials 0.000 claims description 5
- 239000010948 rhodium Substances 0.000 claims description 5
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 229910000510 noble metal Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical group O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000011229 interlayer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 238000011045 prefiltration Methods 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012210 heat-resistant fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- 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
- F01N3/0226—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 fibrous
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2835—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support fibrous
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/12—Metallic wire mesh fabric or knitting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Oxidationskatalysator für Abgase einer Verbrennungskraftmaschine mit wenigstens einem Katalysatorkörper, welcher einen Trägerkörper mit einer Washcoat-Zwischenschicht aufweist, auf der eine katalytisch aktive Beschichtung vorgesehen ist, dadurch gekennzeichnet, dass der Trägerkörper des Katalysatorkörpers (2) als Metalldrahtgestrick ausgebildet ist, auf dessen Metalldrähte die Washcoat-Zwischenschicht und darauf die katalytisch aktive Beschichtung aufgebracht sind, und dass in Strömungsrichtung des Abgases vor dem Katalysator (2) ein Filter (1) aus einem Metalldrahtgestrick auf dessen Metalldrähten eine Washcoat-Beschichtung vorgesehen ist, angeordnet ist.oxidation catalyst for exhaust gases an internal combustion engine with at least one catalyst body, which a carrier body with a washcoat intermediate layer on which a catalytically active Coating is provided, characterized in that the carrier body of catalyst body (2) is designed as a metal wire knit, on the metal wires the Washcoat interlayer and then the catalytically active coating are applied, and that in the flow direction of the exhaust before the catalyst (2) a filter (1) made of a metal wire knit on the metal wires a washcoat coating is provided is arranged.
Description
Die Erfindung betrifft einen Oxidationskatalysator für Abgase einer Verbrennungskraftmaschine mit wenigstens einem Katalysatorkörper, welcher einen Trägerkörper mit großer Oberfläche aufweist, auf der eine katalytisch aktive Beschichtung angeordnet ist.The The invention relates to an oxidation catalyst for exhaust gases of an internal combustion engine with at least one catalyst body which has a carrier body with greater surface has arranged on the a catalytically active coating is.
Ein
derartiger Oxidationskatalysator ist aus der
Ferner
ist aus der
Ferner
ist aus der
[Aufgabe der Erfindung]OBJECT OF THE INVENTION
Aufgabe der Erfindung ist es, einen Oxidationskatalysator für Abgase einer Verbrennungskraftmaschine der eingangs genannten Art zu schaffen, bei welchem pro Volumeneinheit eine vergrößerte katalytisch wirksame Filteroberfläche zur Verfügung gestellt wird.task The invention is an oxidation catalyst for exhaust gases to provide an internal combustion engine of the type mentioned, at which per unit volume an enlarged catalytically effective filter surface to disposal is provided.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.These Task is achieved by the characterizing features of claim 1 solved.
Bei der Erfindung besteht der Träger des Katalysatorkörpers aus einem Metalldrahtgestrick, auf dessen Metalldrähte eine Washcoat-Zwischenschicht und darauf die katalytisch wirksame Beschichtung aufgebracht sind. Ferner ist im Katalysatorgehäuse in Abgasströmungsrichtung vor dem Katalysatorkörper ein Filter aus einem Metalldrahtgestrick, auf dessen Oberfläche eine Washcoat-Beschichtung vorgesehen ist, angeordnet. Durch dieses Vorfilter erreicht man eine Erhöhung der Betriebstemperatur des Katalysator.at The invention consists of the carrier of the catalyst body from a metal wire mesh, on whose metal wires a Washcoat intermediate layer and then the catalytically active coating are applied. Further, in the catalyst housing in the exhaust gas flow direction in front of the catalyst body a filter made of a metal wire mesh, on the surface of a Washcoat coating is provided arranged. Through this pre-filter you reach an increase the operating temperature of the catalyst.
Die Washcoat-Beschichtung im Filter und im Katalysatorkörper besteht vorzugsweise aus Aluminiumoxid (Al2O3). Vorzugsweise enthält die Washcoat-Beschichtung ein Seltenerdmetalloxid, insbesondere Ceroxid. Die Washcoat-Beschichtung kann ferner eines oder mehrere weitere Metalloxide, die ausgewählt sind aus der Gruppe anorganischer Oxide der Seltenerdmetalle, und von Lanthan, Titan, Zirconium, Hafnium, enthalten. Für die katalytisch aktive Beschichtung des Katalysatorkörpers eignen sich vorzugsweise Edelmetalle, wie Platin, Palladium, Rhodium, Ruthenium und Iridium.The washcoat coating in the filter and in the catalyst body is preferably made of aluminum oxide (Al 2 O 3 ). Preferably, the washcoat coating contains a rare earth metal oxide, especially ceria. The washcoat coating may further comprise one or more other metal oxides selected from the group of inorganic rare earth element oxides and lanthanum, titanium, zirconium, hafnium. Preference is given to noble metals such as platinum, palladium, rhodium, ruthenium and iridium for the catalytically active coating of the catalyst body.
Anhand der Figur wird an einem Ausführungsbeispiel die Erfindung noch näher erläutert.Based The figure is based on an embodiment the invention even closer explained.
Bei
dem in der Figur dargestellten Ausführungsbeispiel sind in einem
Gehäuse
Der
Katalysatorkörper
Bei
der Herstellung des Filters
Für den Strickvorgang wird ein Metalldraht, welcher Cer aufweisen kann, mit einem Durchmesser von beispielsweise 0,35 mm verwendet. Das Drahtgestrick kann eine Breite von 35 mm aufweisen mit einer Anzahl der Nadeln von 20. Ferner kann der Metalldraht eine Pfeilwellung von ca. 5 bis 6 mm Höhe haben.For the knitting process For example, a metal wire, which may include cerium, has a diameter used by, for example, 0.35 mm. The knitted wire can be a Width of 35 mm with a number of needles of 20. Further the metal wire may have an arrow corrugation about 5 to 6 mm high.
Ein Ausführungsbeispiel des Oxidationskatalysators wurde an einem Dieselmotor mit Turbolader, einem Hubraum von 3920 cm3 und 85 kW bei verschiedenen Drehzahlen geprüft. Es wurden Prüfläufe ohne Katalysator und mit einem Oxidationskatalysator gemäß der Erfindung durchgeführt. Im folgenden sind die Messergebnisse angegebenen:An exemplary embodiment of the oxidation catalytic converter was tested on a turbocharged diesel engine with a displacement of 3920 cm 3 and 85 kW at different rotational speeds. Test runs were carried out without catalyst and with an oxidation catalyst according to the invention. The following are the measurement results given:
CO(g/kWh) CO (g / kWh)
HC (g/kW) HC (g / kW)
Nox (g/kWh) Nox (g / kWh)
Gegebenenfalls
kann dem in der Figur dargestellten Oxidationskatalysator in Abgasströmungsrichtung
ein Rußfilter
nachgeschaltet sein, wenn es sich bei der Verbrennungskraftmaschine
um einen Dieselmotor handelt. Die Metalldrahtgeschicke mit den entsprechenden
Beschichtungen im Filter
Bei
dem in der Figur dargestellten Ausführungsbeispiel ist das Filter
Beim
dargestellten Ausführungsbeispiel
sind das Filter
Je
nach den Einbauerfordernissen können
auch andere geometrische Formen für das Filter
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001133231 DE10133231B4 (en) | 2001-07-09 | 2001-07-09 | Oxidation catalyst for exhaust gases of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001133231 DE10133231B4 (en) | 2001-07-09 | 2001-07-09 | Oxidation catalyst for exhaust gases of an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10133231A1 DE10133231A1 (en) | 2003-02-06 |
DE10133231B4 true DE10133231B4 (en) | 2006-11-16 |
Family
ID=7691124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2001133231 Expired - Fee Related DE10133231B4 (en) | 2001-07-09 | 2001-07-09 | Oxidation catalyst for exhaust gases of an internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10133231B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008027328A1 (en) | 2008-06-07 | 2009-12-10 | Volkswagen Ag | Internal combustion engine e.g. diesel engine, exhaust line, has deformable catalyst body arranged in-front of and/or after pre-converter and/or in inlet and/or outlet region and as insert in sound absorber |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10309862B4 (en) * | 2003-03-06 | 2006-07-13 | Rhodius Gmbh | Device for removing pollutants from an exhaust gas of an internal combustion engine, in particular a diesel engine |
DE102004054845A1 (en) * | 2004-11-12 | 2006-06-01 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Coated particle trap with nitrogen dioxide regeneration |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2849069A1 (en) * | 1977-11-18 | 1979-05-23 | Texaco Development Corp | SMOKE FILTER AND METHOD FOR PRODUCING SUCH A |
EP0304762A1 (en) * | 1987-08-26 | 1989-03-01 | W.R. Grace & Co.-Conn. | Particulate trap |
-
2001
- 2001-07-09 DE DE2001133231 patent/DE10133231B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2849069A1 (en) * | 1977-11-18 | 1979-05-23 | Texaco Development Corp | SMOKE FILTER AND METHOD FOR PRODUCING SUCH A |
EP0304762A1 (en) * | 1987-08-26 | 1989-03-01 | W.R. Grace & Co.-Conn. | Particulate trap |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008027328A1 (en) | 2008-06-07 | 2009-12-10 | Volkswagen Ag | Internal combustion engine e.g. diesel engine, exhaust line, has deformable catalyst body arranged in-front of and/or after pre-converter and/or in inlet and/or outlet region and as insert in sound absorber |
Also Published As
Publication number | Publication date |
---|---|
DE10133231A1 (en) | 2003-02-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: RHODIUS GMBH, 91781 WEISSENBURG, DE |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |