DE3928790A1 - Apertured support plate for catalyst receives loose fibres - before bonding, compaction and catalyst application to interstices - Google Patents
Apertured support plate for catalyst receives loose fibres - before bonding, compaction and catalyst application to intersticesInfo
- Publication number
- DE3928790A1 DE3928790A1 DE3928790A DE3928790A DE3928790A1 DE 3928790 A1 DE3928790 A1 DE 3928790A1 DE 3928790 A DE3928790 A DE 3928790A DE 3928790 A DE3928790 A DE 3928790A DE 3928790 A1 DE3928790 A1 DE 3928790A1
- Authority
- DE
- Germany
- Prior art keywords
- network
- fibers
- catalyst
- catalyst plate
- fibres
- 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.)
- Withdrawn
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 28
- 238000005056 compaction Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract 2
- 239000000835 fiber Substances 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 7
- 229920000914 Metallic fiber Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000011149 active material Substances 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying 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
- F01N3/08—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
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- F01N3/2807—Metal other than sintered metal
-
- 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
- F01N2330/10—Fibrous material, e.g. mineral or metallic wool
-
- 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
-
- 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
- F01N2330/14—Sintered material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Herstellen einer Katalysatorplatte, wobei ein metallisches Netzwerk, insbesondere Gewebe, Gewirke oder Gestrick aus Metalldraht oder metallischer Grundkörper, insbesondere Lochblech oder Streckmetall, mit einer katalytisch aktiven Masse versehen wird und Fasern zum Stabilisieren der Masse am Netzwerk vorgesehen werden. Weiterhin betrifft die Erfindung ein Stützgerüst zur Herstellung einer Katalysatorplatte.The invention relates to a method for producing a Catalyst plate, being a metallic network, in particular woven, knitted or knitted fabrics made of metal wire or metallic base body, in particular perforated plate or Expanded metal, provided with a catalytically active mass and fibers to stabilize the mass on the network be provided. The invention further relates to a Support frame for the production of a catalyst plate.
Ein derartiges Verfahren ist in der DE-OS 37 14 262 beschrieben. Dort wird auf ein vorbehandeltes Drahtgewebe die katalytisch aktive Masse aufgewalzt. Die Masse ist zuvor in Folienform ausgewalzt. Der Masse sind Fasern beigemischt. Eine homogene Verteilung der Fasern in der Mischung bzw. der Folie ist in der Praxis schwer zu erreichen. Bei einer nichthomogenen Beimischung der Fasern ist die Stabilisierung der Masse am Netzwerk lückenhaft. Darüberhinaus bildet das Netzwerk nur einen Kern der Katalysatorplatte. Das Netzwerk erstreckt sich dabei nicht bis an die Oberflächen der Katalysatorplatte. Dies begünstigt unerwünschte Abplatzungen. Such a method is in DE-OS 37 14 262 described. There is a pre-treated wire mesh rolled up the catalytically active mass. The mass is before rolled out in foil form. Fibers are added to the mass. A homogeneous distribution of the fibers in the mixture or Film is difficult to achieve in practice. At a Non-homogeneous admixture of the fibers is the stabilization the mass of the network is incomplete. Furthermore, that forms Network only one core of the catalyst plate. The network does not extend to the surface of the Catalyst plate. This favors unwanted flaking.
In der DE-PS 35 26 383 ist ein Verfahren zur Herstellung einer Katalysatorplatte beschrieben, bei dem durch eine Säurebehandlung des metallischen Netzwerks ein Verbund zwischen dem katalytisch aktiven Material und dem Netzwerk erreicht wird. Auch hier reicht das stabilisierende Netzwerk nicht bis an die Oberflächen der Katalysatorplatte. Die Dicke des stabilisierenden Netzwerks ist also kleiner als die Solldicke der Katalysatorplatte.In DE-PS 35 26 383 is a process for the preparation a catalyst plate described in which by a Acid treatment of the metallic network a composite between the catalytically active material and the network is achieved. The stabilizing network is also sufficient here not to the surface of the catalyst plate. The The thickness of the stabilizing network is therefore less than the target thickness of the catalyst plate.
Aufgabe der Erfindung ist es, ein Verfahren der eingangs genannten Art zur Herstellung einer Katalysatorplatte vorzuschlagen, die gegen Abrasion, Temperaturwechsel und Abplatzungen stabil ist, ohne daß der katalytisch aktiven Masse Fasern zur Stabilisierung beigemischt werden müssen.The object of the invention is a method of the beginning mentioned type for producing a catalyst plate propose that against abrasion, temperature changes and Flaking is stable without being catalytically active Bulk fibers must be added for stabilization.
Erfindungsgemäß ist obige Aufgabe bei einem Verfahren der eingangs genannten Art dadurch gelöst, daß das Netzwerk mit den Fasern beschichtet wird und diese mit dem Netzwerk verbunden werden, daß danach das Netzwerk mit den Fasern auf die Solldicke der Katalysatorplatte verdichtet wird und daß anschließend die katalytisch aktive Masse in Schlicker oder Pulverform ohne Faserbeimischung in das Netzwerk eingebracht wird.According to the invention, the above object is in a method of type mentioned in that the network with the fibers are coated and this with the network be connected that after that the network with the fibers the target thickness of the catalyst plate is compressed and that then the catalytically active mass in slip or Powder form introduced into the network without the addition of fibers becomes.
Das von dem Netzwerk und den mit ihm verbundenen Fasern gebildete Stützgerüst nimmt dabei die Solldicke der Katalysatorplatte ein; es reicht also bis an die Oberfläche der Katalysatorplatte. Dadurch ist eine hohe Abrasionsbeständigkeit der Katalysatorplatte erreicht. Außerdem haftet die katalytisch aktive Masse stabil am Stützgerüst, wodurch Abplatzungen der katalytisch aktiven Masse vermieden sind und eine Unempfindlichkeit gegen Temperaturwechsel gewährleistet ist. That of the network and the fibers connected to it formed scaffolding takes the target thickness of the Catalyst plate on; it extends to the surface the catalyst plate. This makes it high Abrasion resistance of the catalyst plate achieved. In addition, the catalytically active composition adheres stably Scaffolding, causing chipping of the catalytically active Mass are avoided and insensitivity to Temperature change is guaranteed.
Darüberhinaus ist die Zusammensetzung der katalytisch aktiven Masse von einer Faserbeimischung unabhängig gestaltbar, da der Masse keine Fasern beigemischt werden müssen. Die Zugabe von Bindemitteln zur Masse kann weitestgehend eingeschränkt werden.In addition, the composition is catalytic active mass regardless of a fiber admixture can be designed because no fibers are added to the mass have to. The addition of binders to the mass can be largely restricted.
In bevorzugter Ausgestaltung der Erfindung werden die Fasern mit dem Netzwerk und untereinander durch Sintern verbunden. Durch das Versintern der Fasern untereinander ist eine stabile Faserarmierung für die katalytisch aktive Masse erreicht. Die versinterten Fasern erhöhen die Abrasionsbeständigkeit. Die Versinterung stellt gleichzeitig die Verbindung der Faserarmierung mit dem Netzwerk im Stützgerüst sicher.In a preferred embodiment of the invention, the fibers connected to the network and to each other by sintering. Due to the sintering of the fibers with each other, one is stable fiber reinforcement for the catalytically active mass reached. The sintered fibers increase the Abrasion resistance. The sintering poses simultaneously the connection of the fiber reinforcement with the network in the Support frame safe.
Vorzugsweise wird das Netzwerk beidseitig mit Fasern beschichtet. Dadurch ist eine Gleichwertigkeit der beiden Oberflächen der Katalysatorplatte gewährleistet.The network is preferably provided with fibers on both sides coated. This is an equivalence of the two Guaranteed surfaces of the catalyst plate.
In Ausgestaltung der Erfindung wird das Netzwerk mit den verbundenen Fasern durch Walzen auf die Solldicke der Katalysatorplatte verdichtet. Es ergeben sich dabei eine Gleichmäßigkeit der Solldicke der Katalysatorplatte und glatte Oberflächen.In an embodiment of the invention, the network with the connected fibers by rolling to the target thickness of the Catalyst plate compressed. This results in one Uniformity of the target thickness of the catalyst plate and smooth surfaces.
Als metallisches Netzwerk eignet sich eine gelochte Metallplatte, ein Streckmetall oder ein Gewebe, Gewirke oder Gestrick aus Metalldraht. Als Fasern werden bevorzugt metallische Fasern verwendet. A perforated network is suitable as a metallic network Metal plate, an expanded metal or a woven, knitted or Knitted from metal wire. Preferred fibers are preferred metallic fibers used.
Ein Stützgerüst mit einem metallischen Netzwerk zur Herstellung einer Katalysatorplatte in der genannten Weise zeichnet sich dadurch aus, daß das Netzwerk mit Fasern beschichtet ist und diese miteinander und mit dem Netzwerk verbunden sind und daß das Stützgerüst die Solldicke der Katalysatorplatte aufweist. Ein solches Stützgerüst kann unabhängig von der im jeweiligen Einzelfall vorgesehenen katalytisch aktiven Masse vorgefertigt sein. Es wird dann im Einzelfall mit der jeweils vorgesehenen katalytisch aktiven Masse versehen, wobei deren Zusammensetzung mechanisch stabilisierende Fasern nicht mehr beigemischt werden müssen.A support structure with a metallic network for manufacturing a catalyst plate in the manner mentioned stands out characterized in that the network is coated with fibers and these are connected to each other and to the network and that the scaffold has the target thickness of the catalyst plate having. Such a scaffold can be used independently of the The catalytically active composition provided in each individual case be prefabricated. It will then be used in individual cases each provided catalytically active mass, their composition being mechanically stabilizing Fibers no longer need to be added.
Ausführungsbeispiele ergeben sich aus der folgenden Beschreibung. In der Zeichnung zeigen:Exemplary embodiments result from the following Description. The drawing shows:
Fig. 1 einen Schnitt eines Stützgerüsts für eine Katalysatorplatte, Fig. 1 shows a section of a scaffold for a catalyst plate,
Fig. 2 einen Schnitt der Katalysatorplatte mit dem Stützgerüst. Fig. 2 shows a section of the catalyst plate with the support frame.
Ein metallisches Netzwerk 1 besteht aus einem Gewebe, Gewirke oder Gestrick aus Metalldrähten 2. Das Netzwerk 1 kann auch von einer gelochten Metallplatte oder Streckmetall gebildet sein.A metallic network 1 consists of a woven, knitted or knitted fabric made of metal wires 2 . The network 1 can also be formed by a perforated metal plate or expanded metal.
In einem ersten Verfahrensschritt wird das Netzwerk 1 beidseitig mit metallischen Fasern 3 beaufschlagt.In a first method step, the network 1 is exposed to metallic fibers 3 on both sides.
In einem nächsten Verfahrensschritt werden die metallischen Fasern 3 miteinander und mit den Metalldrähten 2 durch Sintern verbunden. In diesem Zustand ist die Dicke des Aufbaus noch größer als die Solldicke S. In a next process step, the metallic fibers 3 are connected to one another and to the metal wires 2 by sintering. In this state, the thickness of the structure is even greater than the target thickness S.
In einem dritten Verfahrensschritt wird dann dieser Aufbau auf die Solldicke S verdichtet. Dieses Verdichten erfolgt zwischen zwei Walzen. Dadurch entsteht das Stützgerüst 4 nach Fig. 1. Dieses weist offene Oberflächen 5, 6 auf, wobei Fasern 3 im Bereich der Oberflächen 5, 6 liegen.In a third method step, this structure is then compressed to the target thickness S. This compression takes place between two rollers. This results in the support structure 4 according to FIG. 1. This has open surfaces 5 , 6 , fibers 3 being in the area of the surfaces 5 , 6 .
Anschließend wird katalytisch aktive Masse 7 in Form von Schlicker in das Stützgerüst 4 eingebracht, so daß dieses vollständig mit der Masse 7 getränkt ist. Nach dem Austrocknen der Masse 7 entstehen geschlossene Oberflächen 8, 9, die die Oberflächen 8, 9 einer Katalysatorplatte 10 mit der Solldicke S (vgl. Fig. 2) bilden. Die Masse 7 ist bis in die Oberflächen 8, 9 durch die Fasern 3 stabilisiert.Subsequently, catalytically active mass 7 in the form of slip is introduced into the supporting structure 4 , so that it is completely impregnated with the mass 7 . After the mass 7 has dried, closed surfaces 8 , 9 are formed , which form the surfaces 8 , 9 of a catalyst plate 10 with the desired thickness S (cf. FIG. 2). The mass 7 is stabilized into the surfaces 8 , 9 by the fibers 3 .
Die Masse 7 kann auch in Pulver- bzw. Puderform in das Stützgerüst 4 eingebracht werden. Es erfolgt dann eine nachträgliche Behandlung, beispielsweise durch Besprühen, mit einem Bindemittel, um die Partikel der Masse 7 zu verbinden.The mass 7 can also be introduced into the supporting structure 4 in powder or powder form. Subsequent treatment then takes place, for example by spraying, with a binder in order to bond the particles of mass 7 .
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3928790A DE3928790A1 (en) | 1989-08-31 | 1989-08-31 | Apertured support plate for catalyst receives loose fibres - before bonding, compaction and catalyst application to interstices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3928790A DE3928790A1 (en) | 1989-08-31 | 1989-08-31 | Apertured support plate for catalyst receives loose fibres - before bonding, compaction and catalyst application to interstices |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3928790A1 true DE3928790A1 (en) | 1991-03-07 |
Family
ID=6388246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3928790A Withdrawn DE3928790A1 (en) | 1989-08-31 | 1989-08-31 | Apertured support plate for catalyst receives loose fibres - before bonding, compaction and catalyst application to interstices |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3928790A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4110285A1 (en) * | 1991-03-28 | 1992-10-01 | Schwaebische Huettenwerke Gmbh | FILTER OR CATALYST BODY |
EP0542002A2 (en) * | 1991-11-12 | 1993-05-19 | Schwäbische Hüttenwerke GmbH | Catalytic converter for the exhaust gases of an internal combustion engine |
WO1999007467A1 (en) * | 1997-08-08 | 1999-02-18 | Abb Lummus Global Inc. | Reactor including a mesh structure for supporting catalytic particles |
EP0906890A1 (en) * | 1997-10-02 | 1999-04-07 | dbb fuel cell engines GmbH | Apparatus for the generation of hydrogen, apparatus for reduction of carbon monoxide content, apparatus for oxidation of carbon monoxide, apparatus for catalytic burning and method for the production of a catalyst |
EP1437491A1 (en) * | 2003-01-10 | 2004-07-14 | Toyota Jidosha Kabushiki Kaisha | Filter catalyst for purifying exhaust gases |
CN109128159A (en) * | 2018-09-21 | 2019-01-04 | 歌尔股份有限公司 | A kind of method and mold of the roughness on the surface for reducing coarse material |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3714262A1 (en) * | 1987-04-29 | 1988-11-10 | Huels Chemische Werke Ag | PLATE-SHAPED CATALYST FOR THE REMOVAL OF NITROGEN OXIDES FROM EXHAUST GASES |
-
1989
- 1989-08-31 DE DE3928790A patent/DE3928790A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3714262A1 (en) * | 1987-04-29 | 1988-11-10 | Huels Chemische Werke Ag | PLATE-SHAPED CATALYST FOR THE REMOVAL OF NITROGEN OXIDES FROM EXHAUST GASES |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4110285A1 (en) * | 1991-03-28 | 1992-10-01 | Schwaebische Huettenwerke Gmbh | FILTER OR CATALYST BODY |
EP0542002A2 (en) * | 1991-11-12 | 1993-05-19 | Schwäbische Hüttenwerke GmbH | Catalytic converter for the exhaust gases of an internal combustion engine |
EP0542002A3 (en) * | 1991-11-12 | 1993-07-14 | Schwaebische Huettenwerke Gmbh | Arrangement of a catalytic converter for the exhaust gases of an internal combustion engine |
US5425236A (en) * | 1991-11-12 | 1995-06-20 | Schwaebische Huettenwerke Gmbh | Catalyzer arrangement for the exhaust gases of an internal combustion engine |
WO1999007467A1 (en) * | 1997-08-08 | 1999-02-18 | Abb Lummus Global Inc. | Reactor including a mesh structure for supporting catalytic particles |
EP0906890A1 (en) * | 1997-10-02 | 1999-04-07 | dbb fuel cell engines GmbH | Apparatus for the generation of hydrogen, apparatus for reduction of carbon monoxide content, apparatus for oxidation of carbon monoxide, apparatus for catalytic burning and method for the production of a catalyst |
WO1999017867A2 (en) * | 1997-10-02 | 1999-04-15 | Dbb Fuel Cell Engines Gesellschaft Mit Beschänkter Haftung | Device for carrying out a heterogenously catalysed reaction and method for producing a catalyst |
WO1999017867A3 (en) * | 1997-10-02 | 1999-08-19 | Dbb Fuel Cell Engines Ges Mit | Device for carrying out a heterogenously catalysed reaction and method for producing a catalyst |
US6517805B1 (en) | 1997-10-02 | 2003-02-11 | Ballard Power Systems Ag | Method and apparatus for producing hydrogen |
EP1437491A1 (en) * | 2003-01-10 | 2004-07-14 | Toyota Jidosha Kabushiki Kaisha | Filter catalyst for purifying exhaust gases |
CN1316152C (en) * | 2003-01-10 | 2007-05-16 | 丰田自动车株式会社 | Filter catalyst for waste gas purification |
US7718143B2 (en) | 2003-01-10 | 2010-05-18 | Toyota Jidosha Kabushiki Kaisha | Filter catalyst for purifying exhaust gases |
CN109128159A (en) * | 2018-09-21 | 2019-01-04 | 歌尔股份有限公司 | A kind of method and mold of the roughness on the surface for reducing coarse material |
CN109128159B (en) * | 2018-09-21 | 2024-02-13 | 歌尔光学科技有限公司 | Method and die for reducing surface roughness of rough material |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3209575C2 (en) | Process for the production of a composite body provided with a fiber-reinforced insert and application of the process | |
DE1402867A1 (en) | Process for the production of reinforced components | |
DE2536276B2 (en) | PROCESS FOR MANUFACTURING A FILTER CARTRIDGE CONSTRUCTED FROM SINTER METAL | |
DE2818184C3 (en) | Process for the production of a layered material with a low-friction surface for shaped workpieces | |
DE2901857A1 (en) | TAPE WRAPPED CARBON BRAKE DISC AND METHOD OF MANUFACTURING IT | |
DE2518037C2 (en) | Waveguide provided with a protective cover | |
DE3928790A1 (en) | Apertured support plate for catalyst receives loose fibres - before bonding, compaction and catalyst application to interstices | |
DE3127505C2 (en) | Process for producing a laminate | |
DE1233145B (en) | Process for the production of multiphase alloys in the solid state | |
DE3540451A1 (en) | CERAMIC FOAM FILTER AND METHOD FOR THE PRODUCTION THEREOF | |
DE2511812A1 (en) | METAL ROD FOR REINFORCED CONCRETE AND METHOD FOR ITS MANUFACTURING | |
DE3225552C2 (en) | Sliding or brake lining | |
DE2001509C3 (en) | Hollow cylindrical filter insert | |
DE3840377A1 (en) | Process and apparatus for producing building boards | |
DE3024648C2 (en) | Asbestos-free artificial stone building element produced by the winding process and process for its production | |
AT267147B (en) | Clay block and process for its manufacture | |
DE4133712C2 (en) | Process for producing a composite material from at least two layers | |
EP0280202A1 (en) | Method of manufacturing a synchro ring | |
DE2616294C3 (en) | Method of manufacturing a self-supporting multilayer panel or shell | |
DE1936667B2 (en) | Reinforced concrete pipe and process for its manufacture | |
DE2850868A1 (en) | FIBER REINFORCED CEMENT PRODUCT AND METHOD FOR PRODUCING THE SAME | |
DE2851664C2 (en) | Process for the production of stranded wire products | |
DE3917787C1 (en) | ||
DE850565C (en) | Process for the production of high pressure pipes from hardening building materials, such as cement in particular | |
DE19847608A1 (en) | Production of a sliding surface of cylinder faces of a lifting piston machine comprises sealing the coating on the surface of the base material by rolling |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8130 | Withdrawal |