UMICORE AG & CO. KG Patent applications |
Patent application number | Title | Published |
20160133453 | AMALGAM BALLS HAVING AN ALLOY COATING - Energy-saving lamps contain a gas filling of mercury vapour and argon in a gas discharge bulb. Amalgam balls are used for filling the gas discharge bulb with mercury. Novel coated balls whose operating life in the case of automatic metered introduction is increased by coating of the balls with an alloy powder and conglutination of the amalgam balls during storage and processing is prevented are proposed, | 05-12-2016 |
20160121267 | THREE-WAY CATALYTIC CONVERTER - The present invention relates to a three-way catalytic converter for reducing harmful exhaust components of gasoline-powered internal combustion engines, and to a corresponding method for exhaust gas purification. The catalytic converter is characterized by a particularly inhomogeneous distribution of the oxygen-storing material present. | 05-05-2016 |
20160082427 | DESULFURIZATION OF NOX STORAGE CATALYSTS - The present invention relates to the use of a particular method for the targeted desulfurization of particular nitric oxide storage catalysts (NOx storage catalysts). In particular, this invention is directed to the use of an adapted method on specifically composed storage catalysts. | 03-24-2016 |
20160038875 | CuCHA MATERIAL FOR SCR CATALYSIS - The present invention relates to a catalyst material which is capable, at high temperatures, of converting nitrogen oxides in exhaust gas, particularly from vehicles driven by lean-running internal combustion engines, in the presence of ammonia into harmless nitrogen. | 02-11-2016 |
20160001226 | HEXAGONAL OXIDATION CATALYST - The present invention is directed to a method of mitigating noxious exhaust pollutants in a system comprising an oxidation catalyst monolith in front of a NO | 01-07-2016 |
20150352495 | CATALYST AND METHOD FOR THE REDUCTION OF NITROGEN OXIDES - The present invention relates to a nitrogen oxide storage catalyst composed of at least two catalytically active washcoat layers on a support body, wherein a lower washcoat layer A contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum, and an upper washcoat layer B disposed atop the washcoat layer A, containing cerium oxide, and also platinum and palladium, and no alkaline earth metal compound, and a method for converting NO | 12-10-2015 |
20150336085 | CATALYST FOR REDUCING NITROGEN OXIDES - The present invention relates to a nitrogen oxide storage catalyst composed of at least two catalytically active coatings on a support body, wherein a lower coating A contains cerium oxide, and platinum and/or palladium, but no alkaline earth metal compound, and an upper coating B which is disposed above coating A contains an alkaline earth metal compound, a basic mixed magnesium-aluminum oxide, and platinum and palladium, and to a method for converting NO | 11-26-2015 |
20150315224 | METHOD FOR PRODUCING AQUEOUS PREPARATIONS OF COMPLEXES OF PLATINUM GROUP METALS - The invention relates to a method for producing aqueous preparations of complexes of platinum group metals (PGM) Pt, Pd, Rh and Ir having the general formula [M | 11-05-2015 |
20150306709 | ALLOYS - Novel alloys which can be employed in joining technology and have improved wetting properties are described. | 10-29-2015 |
20150273394 | CATALYST SYSTEM FOR TREATING NOx- AND PARTICLE-CONTAINING DIESEL EXHAUST GAS - The present invention relates to a catalyst system for treatment of diesel exhaust gas, comprising, in flow direction of the exhaust gas,
| 10-01-2015 |
20150139875 | METHOD FOR PREVENTING THE CONTAMINATION BY PLATINUM OF AN SCR CATALYST - The invention relates to a method for preventing the contamination by platinum of an SCR catalyst in an exhaust-gas treatment system, said system comprising an oxidation catalyst containing platinum on the inflow side of the SCR catalyst. The outflow side of the oxidation catalyst comprises a material zone which removes traces of platinum contained in the exhaust-gas stream. | 05-21-2015 |
20150125371 | THREE-WAY-CATALYST SYSTEM - The present invention describes a three-way-catalyst system comprising a first three-way catalyst on an inert catalyst support which is a double-layer catalyst comprising a first layer on the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium and being free of cerium and cerium containing materials and a second three-way-catalyst located upstream of the first three-way catalyst. | 05-07-2015 |
20150125370 | START-UP CATALYST FOR USE UPSTREAM OF A GASOLINE PARTICULATE FILTER - The present invention describes a double-layer three-way catalyst on an inert catalyst support comprising a first layer in direct contact with the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium, characterized in that the second layer is free of cerium and cerium containing materials, the use of such catalyst for cleaning the exhaust gases of a motor vehicle equipped with a gasoline engine and an exhaust gas treatment system comprising such catalyst up stream of a gasoline particulate filter (GPF). | 05-07-2015 |
20150107228 | POLLUTANT ABATEMENT SYSTEM FOR GASOLINE VEHICLES - The present invention is directed to a pollutant abatement system for vehicles propelled by a gasoline combustion engine, in particular a gasoline direct injection engine (GDI). In addition, this invention is concerned with a process of mitigating noxious compounds in the exhaust of such an engine efficiently by applying the inventive abatement system to fulfill future legislative exhaust regulations. | 04-23-2015 |
20150045558 | RUTHENIUM-BASED METATHESIS CATALYSTS AND PRECURSORS FOR THEIR PREPARATION - The invention is directed to ruthenium-based metathesis catalysts of the Hoveyda-Grubbs type. The new N-chelating diarylamino-based ruthenium catalysts described herein are stable in solid state and in solution and reveal rapid initiation behavior. Further, the corresponding N-substituted styrene precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from N-substituted styrene precursors. The new Hoveyda-Grubbs type catalysts are suitable to catalyze ring-closing metathesis (RCM), cross metathesis (CM) and ring-opening metathesis polymerization (ROMP). Low catalyst loadings are sufficient to convert a wide range of substrates via metathesis reactions. | 02-12-2015 |
20140356646 | METHOD FOR PRODUCING A SEMIFINISHED PRODUCT FOR ELECTRICAL CONTACTS AND CONTACT PIECE - The present invention relates to a novel method for producing metallic semifinished products by extrusion, to the thus obtainable semifinished products and to contact pieces that can be produced therefrom. | 12-04-2014 |
20140314646 | Method for Operating Exhaust Gas Purification Systems - The invention relates to a method for purifying exhaust gas in vehicles with internal combustion engines. The method is characterised in that exhaust gas coming from the engine ( | 10-23-2014 |
20140287141 | Process for Preparing Trialkyl Compounds of Metals of Group IIIA - The invention relates to a process for preparing trialkylmetal compounds of the general formula R | 09-25-2014 |
20140283503 | METHOD FOR CONDITION DETERMINATION OF AN EXHAUST-GAS PURIFICATION SYSTEM - The present invention relates to a process for determining the state of an exhaust-gas purification device. The exhaust-gas purification device is one which can store gas and/or particles. By means of the proposed process, it is for example possible for the loading state of the exhaust-gas aftertreatment system, for example the oxygen storage state of a catalytic converter which is provided with an oxygen-storing material, such as for example a three-way catalytic converter, to be analysed. The present process operates contactlessly through the analysis of resonances which arise upon the excitation of the catalytic converter using the purification device as microwave cavity resonator | 09-25-2014 |
20140249281 | METHOD FOR PREPARATION OF PLATINUM-CARBONYL-SILOXANE COMPOUNDS - The invention relates to a method for preparation of platinum siloxane compounds containing at least one CO ligand molecule (Pt carbonyl siloxanes). The method comprises reacting gaseous carbon monoxide (CO) with a platinum siloxane compound, preferably a platinum vinyl-cyclosiloxane compound, in solution with an organic solvent. The method is straightforward and applicable to industrial scale. With this method, specific isomers of platinum carbonyl vinylcyclosiloxanes are prepared, in which the two η-2-ethenyl groups coordinated to the Pt atom are bonded in trans-configuration relative to the cyclosiloxane backbone. The Pt compounds obtained by the method are used as catalysts for hydrosilylation and for crosslinking and curing of siloxanes and silanes. | 09-04-2014 |
20140243558 | NOVEL HYDROFORMYLATION PROCESS - The present invention relates to a process for producing 4-hydroxybutyraldehyde, characterized in that allyl alcohol dissolved in polar solvents is reacted with CO and H2 in the presence of a catalytic system which is formed from a rhodium complex and a cyclobutane ligand which contains at least two trans-coordinated 1,3-dialkylphenyl-phosphinomethyl groups, with the exclusion of catalysts which contain an aliphatic, araliphatic or cycloaliphatic phosphine as ligand. In which R | 08-28-2014 |
20140187803 | Method for the Preparation of Palladium(I) Tri-Tert-Butylphosphine Bromide Dimer and Process for its Use in Isomerization Reactions - The invention provides a new method for the preparation of the dimeric Pd(l) tri-tert.-butylphosphine bromide complex, characterized by the chemical formula [Pd(μ-Br)(P | 07-03-2014 |
20140171607 | New Complexes of Ruthenium, Method for Their Preparation, and Their Application in Olefin Metathesis Reactions - The present invention provides new ruthenium complexes of Formula (1), which contain a chelate ring created by a halogen atom X. The invention concerns also a method for the preparation of the new ruthenium complexes and their application in metathesis reactions. | 06-19-2014 |
20140171297 | Catalyst particles comprising hollow multilayered base metal-precious metal core/shell particles and method of their manufacture - The present invention is directed to hollow catalyst particles comprising a layered shell structure and to a method of their manufacture. The catalyst particles have the general formula H | 06-19-2014 |
20140171290 | Catalyst particles comprising a layered core-shell-shell structure and method of their manufacture - The present invention is directed to catalyst particles comprising a layered core-shell-shell structure and to a method of their manufacture. The catalyst particles have the general formula BM/IL/PM in which BM is a base metal core (selected from Co, Ni or Cu), PM is a precious metal outer shell (selected from Pt, Ir or Pd) and IL is an intermediate layer comprising a base metal/precious metal alloy with a concentration gradient of base metal to the outside PM layer. The particles of the present invention comprise a core-shell-shell structure and a substantially continuous precious metal shell layer. They find use in various catalytic applications, for example in gas-phase catalysis, in electrocatalysts for fuel cells, in catalytic converters for automobiles and in electronic or medical applications. | 06-19-2014 |
20140123630 | Method and Device for Reactivating Exhaust-Gas Purification Systems of Diesel Engines with Low-Pressure EGR - The invention relates to a method for reactivating a system composed of an oxidation catalytic converter ( | 05-08-2014 |
20140114090 | LIGANDS AND CATALYST SYSTEMS FOR HYDROFORMYLATION PROCESSES - The present invention relates to ligands and catalyst systems for the hydroformylation of short and long chain olefins, preferably for the hydroformylation of ally alcohol producing 4-hydroxybutyraldehyde. The ligands disclosed herein are all-trans phosphinomethyl-cyclobutane ligands, such as, for example, all-trans-1,2,3, 4-tetra[bis-(3,5-xylyl)phosphinomethyl]-cyclobutane. The catalyst systems comprise these all-trans phosphinomethyl-cyclobutane ligands in combination with an organometallic rhodium complex such as, e.g., (acctylacetonato)-dicarbonyl-rhodium (I). The ligands and catalyst systems of the present invention may be employed in the hydroformylation of olefins, in particular in the hydroformylation of allylalcohol, and provide improved selectivity and high reaction yields. wherein R | 04-24-2014 |
20140112849 | METHOD FOR THE DEPOSITON OF METALS ON SUPPORT OXIDES - The present invention is directed to a process for the production of supported transition metals with high dispersion. The latter are deposited onto refractory oxides without using a further liquid solvent. Hence, according to this dry procedure no solvent is involved which obviates certain drawbacks connected with wet ion exchange, impregnation or other metal addition processes known in the art. | 04-24-2014 |
20140090362 | METHOD FOR REGENERATING NOX STORAGE CATALYTIC CONVERTERS OF DIESEL ENGINES WITH LOW-PRESSURE EGR - The invention relates to a method for regenerating nitrogen oxide storage catalytic converters and to a correspondingly adapted exhaust-gas purification system for lean-burn engines. In particular, the present invention relates to the regeneration of nitrogen oxide storage catalytic converters during special driving situations of the vehicle. | 04-03-2014 |
20140060611 | Method for Soldering Solar Cell Contacts on Aluminium Connection-Conductors - The invention relates to a method for connecting solder-coated connection leads ( | 03-06-2014 |
20140056789 | DENOX OF DIESEL ENGINE EXHAUST GASES USING A TEMPERATURE-CONTROLLED PRECATALYST FOR PROVIDING NO2 IN ACCORDANCE WITH THE REQUIREMENTS - A process which solves the problem of supplying NO | 02-27-2014 |
20140055026 | AMALGAM BALLS HAVING AN ALLOY COATING - Energy-saving lamps contain a gas filling of mercury vapour and argon in a gas discharge bulb. Amalgam balls are used for filling the gas discharge bulb with mercury. Novel coated balls whose operating life in the case of automatic metered introduction is increased by coating of the balls with an alloy powder and conglutination of the amalgam balls during storage and processing is prevented are proposed. | 02-27-2014 |
20140041366 | CATALYTIC CONVERTER FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES IN THE EXHAUST GAS OF DIESEL ENGINES - The present invention relates to a catalytic converter which comprises a molecular sieve and a mixed oxide, and to a method for the selective catalytic reduction of nitrogen oxides in exhaust gases of diesel engines. | 02-13-2014 |
20140026715 | PROCESS FOR PROVIDING NOBLE METAL-CONTAINING MIXTURES FOR RECOVERING NOBLE METALS - The invention relates to the provision of noble metal-containing mixtures for a process for processing them by heating the mixture, preferably for processing them by means of an ashing process. This provision is characterized by the following measures: (a) moistening of the noble metal-containing mixture to be processed, (b) introduction of the moistened noble metal-containing mixture into at least one container which serves as diffusion barrier for water, and (c) introduction of the loaded container into a heat-resistant chamber together with at least one upper refractory mat. The noble metal-containing mixture is preferably moistened in the presence of a porous material and the chamber is closed by means of a heat-resistant covering. The invention further provides a processing process comprising the provision of noble metal-containing mixtures and also the heat-resistant chamber loaded with noble metal-containing mixtures itself. The process of the invention enables simple, clean recovery of noble metals in high yield from noble metal-containing mixtures. | 01-30-2014 |
20130336866 | CATALYTICALLY ACTIVE MATERIAL AND CATALYTIC CONVERTER FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES - The invention relates to a catalytically active material for reacting nitrogen oxides with ammonia in the presence of hydrocarbons. The material consists of an inner core ( | 12-19-2013 |
20130336863 | SCR CATALYTIC CONVERTER HAVING IMPROVED HYDROCARBON RESISTANCE - A catalyst for the selective catalytic reduction of nitrogen oxides in diesel engine exhaust gases using ammonia or a precursor compound decomposable to ammonia is described. The catalyst comprises two superposed coatings applied to a support body, of which the first coating applied directly to the support body comprises a transition metal-exchanged zeolite and/or a transition metal-exchanged zeolite-like compound, and effectively catalyzes the SCR reaction. The second coating has been applied to the first coating so as to cover it on the exhaust gas side. It is configured so as to prevent the contact of hydrocarbons having at least three carbon atoms present in the exhaust gas with the layer beneath, without blocking the passage of nitrogen oxides and ammonia to the first coating. The second coating may be formed from small-pore zeolites and/or small-pore zeolite-like compounds, and from suitable oxides, especially silicon dioxide, germanium dioxide, aluminum oxide, titanium dioxide, tin oxide, cerium oxide, zirconium dioxide and mixtures thereof. As well as the catalyst, routes for production thereof are described. | 12-19-2013 |
20130302214 | COATED DIESEL PARTICLE FILTER - The present invention relates to a diesel particle filter which has a coating active in oxidation catalysis and which is characterized in that said diesel particle filter comprises a material zone which removes platinum traces contained in the exhaust-gas flow, and to the use of said diesel particle filter in the purification of exhaust gases of diesel engines. | 11-14-2013 |
20130287660 | THREE-WAY CATALYST HAVING AN UPSTREAM SINGLE-LAYER CATALYST - Disclosed herein is a layered three-way catalytic system being separated in a front and a rear portion having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. Provided is a catalyst composite comprising a single front catalytic layer and two rear catalytic layers in conjunction with a substrate, where the single font layer and the rear bottom layer comprise a Pd component, the rear top layer comprises a Rh component, and the rear bottom layer is substantially free of an oxygen storage component (OSC). | 10-31-2013 |
20130286770 | STATIC GAS MIXER - The present invention is directed to an apparatus for mixing gaseous mixture components. The present invention likewise relates to a correspondingly applied method and to the use of an apparatus according to the invention for mixing components of the exhaust gas of internal combustion engines with a reducing agent and to a correspondingly designed reactor. | 10-31-2013 |
20130280150 | CATALYTICALLY ACTIVE PARTICULATE FILTER AND USE THEREOF - A catalytically active particulate filter is proposed which is suitable for use in an exhaust gas cleaning system for diesel engines. The particulate filter removes diesel soot particles from the exhaust gas and is also effective to oxidise carbon monoxide and hydrocarbons and to convert nitrogen monoxide at least proportionally into nitrogen dioxide. The particulate filter comprises a filter body ( | 10-24-2013 |
20130266497 | COPPER/CHABAZITE-BASED CATALYST WITH IMPROVED CATALYTIC ACTIVITY FOR REDUCTION OF NITROGEN OXIDES - The present invention relates to a process for improving the catalytic activity of a copper-promoted zeolitic catalyst with chabazite structure, to a copper-promoted zeolitic catalyst with chabazite structure and to a process for reducing nitrogen oxides in an offgas stream. | 10-10-2013 |
20130251611 | PROCESS FOR THE PRODUCTION OF METAL DOPED ZEOLITES AND ZEOTYPES AND APPLICATION OF SAME TO THE CATALYTIC REMEDIATION OF NITROGEN OXIDES - The present invention is directed to a process for the production of ion-exchanged (metal-doped, metal-exchanged) Zeolites and Zeotypes, In particular, the method applied uses a sublimation step to incorporate the ion within the channels of the Zeolitic material. Hence, according to this dry procedure no solvent is involved which obviates certain drawbacks connected with wet exchange processes known in the art. | 09-26-2013 |
20130227993 | Apparatus For Use In The Glass Industry And Method For Processing Molten Glass - Apparatus, which is suitable for being surrounded by molten glass, the apparatus having a shank which has at least one at least partially seamless tube consisting of an oxide dispersion-strengthened PGM material, the shank having at least one thickened portion on which an actuating device is arranged. | 09-05-2013 |
20130202509 | DIESEL OXIDATION CATALYST - The present invention relates to a catalytically active material consisting of an inner core ( | 08-08-2013 |
20130189172 | CATALYST FOR REMOVING NITROGEN OXIDES FROM THE EXHAUST GAS OF DIESEL ENGINES - The invention relates to a catalyst for removal of nitrogen oxides from the exhaust gas of diesel engines, and to a process for reducing the level of nitrogen oxides in the exhaust gas of diesel engines. The catalyst consists of a support body of length L and of a catalytically active coating which in turn may be formed from one or more material zones. The material zones comprise selectively catalytically reductive (SCR-active) mixed oxide consisting of cerium oxide, zirconium oxide, rare earth sesquioxide and niobium oxide and optionally tungsten oxide. In addition, the material zones comprise at least one compound selected from the group consisting of barium oxide, barium hydroxide, barium carbonate, strontium oxide, strontium hydroxide, strontium carbonate, praseodymium oxide, lanthanum oxide, magnesium oxide, mixed magnesium/aluminum oxide, alkali metal oxide, alkali metal hydroxide, alkali metal carbonate and mixtures thereof. Noble metal may optionally also be present in the catalyst. | 07-25-2013 |
20130156668 | CATALYST FOR REMOVING NITROGEN OXIDES FROM THE EXHAUST GAS OF DIESEL ENGINES - The invention relates to a catalyst for removal of nitrogen oxides from the exhaust gas of diesel engines, and to a process for reducing the level of nitrogen oxides in the exhaust gas of diesel engines. The catalyst consists of a support body of length L and of a catalytically active coating which in turn may be formed from one or more material zones. The material zones comprise a copper-containing zeolite or a zeolite-like compound. The materials used include chabazite, SAPO-34, ALPO-34 and zeolite β. In addition, the material zones comprise at least one compound selected from the group consisting of barium oxide, barium hydroxide, barium carbonate, strontium oxide, strontium hydroxide, strontium carbonate, praseodymium oxide, lanthanum oxide, magnesium oxide, magnesium/aluminum mixed oxide, alkali metal oxide, alkali metal hydroxide, alkali metal carbonate and mixtures thereof. Noble metal may optionally also be present in the catalyst. | 06-20-2013 |
20130144060 | Ruthenium-Based Catalytic Complexes and the Use of Such Complexes for Olefin Metathesis - Disclosed herein are compounds of the formula (I) or (II) in which: L is a neutral ligand; X, X′ are anionic ligands; R | 06-06-2013 |
20130121902 | NOVEL MIXED OXIDE MATERIALS FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES IN EXHAUST GASES - The invention relates to the use of mixed oxides made of cerium oxide, zirconium oxide, rare earth sesquioxide and niobium oxide as catalytically active materials for the selective catalytic reduction of nitrogen oxides with ammonia or a compound that can decompose to form ammonia in the exhaust gas of internal combustion engines in motor vehicles that are predominantly leanly operated, and to compositions or catalysts which contain said mixed oxides in combination with zeolite compounds and/or zeolite-like compounds and are suitable for the denitrogenation of lean motor vehicle exhaust gases in all essential operating states. | 05-16-2013 |
20130079515 | Complexes of Ruthenium, Method of Production Thereof And Use Thereof As (Pre)Catalysts of the Metathesis Reaction - The present invention provides ruthenium complexes of the formula | 03-28-2013 |
20130058848 | Three-Way Catalyst Having a Upstream Multi-Layer Catalyst - Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC). | 03-07-2013 |
20130035494 | Process for Preparation of Ruthenium-Based Carbene Catalysts with Chelating Alkylidene Ligands - The invention relates to a method for preparation of ruthenium-based carbene catalysts with chelating alkylidene ligands (so-called “Hoveyda-type catalysts”) in a cross metathesis reaction by reacting a ruthenium-alkylidene complex with an olefin derivate in the presence of a polymer-supported cation-exchange resin (PSR) acting as a ligand (i.e. phosphine or amine) scavenger. Preferably, penta-coordinated ruthenium benzylidene or indenylidene carbene complexes are employed. The polymer-supported cation-exchange resin (PSR) may be an acidic resin (comprising sulfonic acid or carboxylic groups) or a resin containing carboxylic acid chloride (—COCl) groups or sulfonyl chloride (—SO | 02-07-2013 |
20130028818 | METHOD OF DEPLETING NITROUS OXIDE IN EXHAUST GAS AFTER-TREATMENT FOR LEAN-BURN ENGINES - The present invention relates to a method for exhaust gas after-treatment for essentially lean-burn internal combustion engines and also a corresponding advantageous exhaust gas after-treatment system. In particular, the present invention relates to reducing the proportion of the greenhouse gas N20 in the total exhaust gas from a corresponding internal combustion system using at least one NOx storage catalyst as exhaust gas purification element. The objective of the invention is to operate the N20 depletion catalyst located downstream of the NOx storage catalyst under lambda=<1 conditions when the N20 formed by the NOx storage catalyst reaches the N20 depletion catalyst. | 01-31-2013 |
20130006392 | SYSTEM AND METHOD FOR SYSTEM AUTOMATION BASED ON INTERPRETING A TREE SEQUENCE OF OPERATIONS - The invention relates to a system and method for automating a system wherein an interpreter generates and executes an execution code based on instructions received in form of a tree sequence, and wherein the tree sequence comprises information of parallel operations to define the respective automation procedure. The definition of the tree sequence may be based on a standardized human and machine readable format, such as e.g. an | 01-03-2013 |
20130004391 | REDUCTION-CATALYST-COATED DIESEL PARTICLE FILTER HAVING IMPROVED CHARACTERISTICS - A diesel particle filter which comprises a ceramic wall flow filter substrate and two coatings is described. The first coating which is applied in the inflow channels and is composed of high-melting materials has such a nature that it closes the inflow channels and pores in the wall connecting the inflow channels and outflow channels to soot particles on the inflow side without preventing passage of the gaseous exhaust gas constituents. The second coating is introduced into the wall between inflow channels and outflow channels and is of such a nature that it can effectively catalyze the selective reduction of nitrogen oxides by means of a reducing agent. The resulting component is an SCR-catalytically active particle filter and displays excellent banking-up pressure properties combined with high filtration efficiency and good regeneration properties. Furthermore, the component displays good aging stability of the NO | 01-03-2013 |
20120321842 | Catalytically Coated Ceramic Honeycomb Bodies - The invention relates to a process for coating ceramic honeycomb bodies with a coating suspension containing, in a carrier liquid, catalyst components as solids and/or in dissolved form. The honeycomb bodies have parallel flow channels running through them. The walls of the flow channels generally have an open pore structure. To coat the channel walls and in particular also the interior surfaces of the pores with the coating suspension, it is proposed that the flow channels be temporarily alternately closed and the coating suspension be forced through the open pore structure of the channel walls. The coating is subsequently dried and calcined. To close the flow channels, it is possible to use thermally or chemically decomposable or soluble compositions which are decomposed or dissolved either during calcination or by means of a subsequent chemical treatment. The coated honeycomb bodies are preferably used for the purification of exhaust gases from automobiles. | 12-20-2012 |
20120321537 | COATING METHOD AND DEVICE - The invention relates to a novel coating device, the method carried out using said device, products obtained thereby, and use of said products. | 12-20-2012 |
20120316054 | CORE / SHELL-TYPE CATALYST PARTICLES AND METHODS FOR THEIR PREPARATION - The invention discloses core/shell, type catalyst particles comprising a M | 12-13-2012 |
20120315381 | COATING DEVICE AND METHOD - The invention relates to a novel assembly for coating substrates. | 12-13-2012 |
20120301606 | NOBLE METAL NANOPARTICLES, A PROCESS FOR PREPARING THESE AND THEIR USE - Nanoparticles which contain noble metals alone or noble metals in combination with base metals. The nanoparticles are embedded in an aqueous solution of a temporary stabilizer based on a polysaccharide. | 11-29-2012 |
20120277456 | PROCESS FOR PREPARING RUTHENIUM(0)-OLEFIN COMPLEXES - The present invention relates to a process for preparing ruthenium(0)-olefin complexes of the (arene)(diene)Ru(0) type by reacting a ruthenium starting compound of the formula Ru(+II)(X) | 11-01-2012 |
20120213674 | DIESEL OXIDATION CATALYST - The invention relates to a catalyst for purifying the exhaust gases from diesel engines, in particular an oxidation catalyst which is particularly well suited for the purification of exhaust gases from heavy goods vehicles when further exhaust gas purification units such as a particle filter and/or a nitrogen oxide reduction catalyst are installed downstream thereof. The catalyst contains two catalytically active coatings which have different compositions and of which only one is in direct contact with the outflowing exhaust gas. The coating ( | 08-23-2012 |
20120148464 | EXHAUST-GAS AFTERTREATMENT SYSTEM WITH CATALYTICALLY ACTIVE WALL-FLOW FILTER WITH STORAGE FUNCTION UPSTREAM OF CATALYTIC CONVERTER WITH IDENTICAL STORAGE FUNCTION - The present invention relates to an exhaust-gas aftertreatment system which comprises a preferably catalytically active particle filter (wall-flow filter) which is followed in turn by a throughflow monolith (flow-through monolith) which is preferably provided with a catalytically active function. Both components have the same storage functions for gaseous substances present in the exhaust gas of internal combustion engines. The system is suitable in particular for the simultaneous removal of particles and pollutants from the exhaust gas of both predominantly lean-operated internal combustion engines and also of internal combustion engines operated predominantly with a stoichiometric air/fuel mixture. Likewise described is a process for the production and the use of such a system for exhaust-gas aftertreatment. | 06-14-2012 |
20120135330 | Membrane-Electrode Assembly with integrated sealing material - The invention relates to a catalyst-coated ion-conducting membrane and a membrane-electrode assembly (MEA) for electrochemical devices, in particular for fuel cells. The catalyst-coated, ion-conducting membrane is provided with a sealing material which is applied in the edge region to one side of the membrane and has a thickness which corresponds to at least the total thickness of the catalyst-coated membrane. Owing to their simple, material-conserving construction, the catalyst-coated ion-conducting membranes and the membrane-electrode assemblies produced therefrom can be manufactured inexpensively. They are used in PEM fuel cells, direct methanol fuel cells (DMFCs), electrolysers and other electrochemical devices. | 05-31-2012 |
20120077671 | NOBLE METAL NANOPARTICLES, A PROCESS FOR PREPARING THESE AND THEIR USE - Nanoparticles which contain noble metals alone or noble metals in combination with base metals. The nanoparticles are embedded in an aqueous solution of a temporary stabilizer based on a polysaccharide. | 03-29-2012 |
20120067030 | METHOD FOR PURIFYING THE EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE HAVING A CATALYTIC CONVERTER - The present invention relates to a method for purifying the exhaust gases of an internal combustion engine having a catalytic converter which comprises oxygen storage components. The invention is concerned particularly with the restoration of the optimum filling degree of the oxygen storage components for regulated stoichiometric operation after the engine has been operated under lean conditions for a relatively short or relatively long period of time. | 03-22-2012 |
20120058888 | Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith - The invention provides a method for manufacturing supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method involves using polyol solvents as reaction medium and comprises a two-step reduction process in the presence of a support material. In the first step, the first metal (transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (noble metal; e.g. Pt, Pd, Au) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. The catalysts manufactured according to the method are used as electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC), direct-methanol fuel cells (DMFC) or as gas phase catalysts for CO oxidation or exhaust gas purification. | 03-08-2012 |
20120014842 | DIESEL PARTICLE FILTER WITH IMPROVED BACK PRESSURE CHARACTERISTICS - Proposed is a diesel particle filter which comprises a ceramic wall-flow filter substrate and a coating applied in the inflow ducts, which coating is composed of material with a high melting point. The coating ( | 01-19-2012 |
20120012457 | MEMBRANE ELETRODE UNIT FOR THE ELECTROLYSIS OF WATER - The invention relates to membrane-electrode assemblies for the electrolysis of water (electrolysis MEAs), which contain an ion-conducting membrane having a front and rear side; a first catalyst layer on the front side; a first gas diffusion layer on the front side; a second catalyst layer on the rear side, and a second gas diffusion layer on the rear side. | 01-19-2012 |
20110308726 | A Process for manufacturing a [[C]]catalyst-coated ionomer membrane with protective film layer - The present invention relates to the field of electrochemical cells and fuel cells, and more specifically to polymer-electrolyte-membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). It is directed to catalyst-coated ionomer membranes (“CCMs”) and membrane-electrode-assemblies (“MEAs”) that contain one or more protective film layers for protection, sealing and better handling purposes. The one or more protective film layers are attached to the surface of said catalyst-coated membranes in such a way that they overlap with a region of the passive non-coated ionomer area, and with a region of the active area that is coated with a catalyst layer. Furthermore, the present invention discloses a process for manufacture of CCMs and MEAs that contain protective film layers. The materials may be used as components for the manufacture of low temperature fuel cell stacks. | 12-22-2011 |
20110277450 | REGULATING STRATEGY FOR A CATALYTIC CONVERTER CONCEPT FOR EXHAUST-GAS AFTERTREATMENT HAVING A PLURALITY OF NITROGEN OXIDE STORAGE CATALYTIC CONVERTERS - The present invention relates to a regulating strategy for a special catalytic converter for exhaust-gas aftertreatment. The catalytic converter concept is distinguished in that at least two nitrogen oxide storage catalytic converters are used in the exhaust section of a vehicle. The first, possibly close-coupled unit is followed by one or more nitrogen oxide storage catalytic converters, which are possibly situated in the underbody of the vehicle. The nitrogen oxide storage catalytic converters are then regenerated as a function of the exceedance of nitrogen oxide threshold vales downstream thereof. | 11-17-2011 |
20110271658 | NITROGEN OXIDE STORAGE CATALYTIC CONVERTER FOR USE IN A MOTOR VEHICLE IN A CLOSE-COUPLED POSITION - The use of nitrogen oxide storage catalysts in a close-coupled position for the cleaning of the exhaust gases from gasoline engines with direct gasoline injection which are operated with a predominantly lean air/fuel mixture places particular demands on the thermal stability and aging stability of the catalysts to be used. | 11-10-2011 |
20110258982 | METHOD FOR THE ON-BOARD REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYSTS IN MOTOR VEHICLES HAVING AN INTERNAL COMBUSTION ENGINE OPERATED PREDOMINANTLY UNDER LEAN CONDITIONS - Nitrogen oxide storage catalysts are used to remove the nitrogen oxides present in the lean exhaust gas of lean-burn engines. Storage catalysts are thermally aged by high temperatures. Ageing is due to sintering of the catalytically active noble metal components of the catalyst and to formation of compounds of the storage components with the support materials. According to the invention, the formation of compounds of the storage materials can be largely reversed by treatment of the storage material with a gas mixture containing carbon dioxide, optionally water vapor and optionally nitrogen oxides at temperatures in the range from 200° C. to 950° C., preferably from 300° C. to 700° C. The reactivation can be carried out under emission-neutral conditions directly in the vehicle during driving operation by setting of suitable exhaust gas conditions and regulating the air/fuel ratio. | 10-27-2011 |
20110236282 | ZROX, CE-ZROX, CE-ZR-REOX AS HOST MATRICES FOR REDOX ACTIVE CATIONS FOR LOW TEMPERATURE, HYDROTHERMALLY DURABLE AND POISON RESISTANT SCR CATALYSTS - The present invention relates to application of catalysts for the Selective Catalytic Reduction of oxides of Nitrogen using N-containing reductant. The catalysts are characterised as phase pure lattice oxide materials into which catalytically active cations are incorporated at high levels of dispersion such that conventional analysis reveals a highly phase pure material. The materials are further characterised by high activity, hydrothermal durability and poison tolerance in the intended application. | 09-29-2011 |
20110229392 | OXIDATION CATALYST FOR COMMERCIAL VEHICLES COMPRISING A DIESEL MOTOR - An oxidation catalyst is described for the exhaust gas purification of utility vehicles with diesel engines, which contains a substrate and a catalytically active coating of platinum, active aluminium oxide and aluminium-silicon mixed oxide. The two oxidic support materials, aluminium oxide and aluminium-silicon mixed oxide, are catalytically activated with platinum, the majority of platinum being present on the active aluminium oxide. The oxidation catalyst is distinguished by good NO oxidation rates together with a high poisoning resistance against sulfur compounds. | 09-22-2011 |
20110209577 | APPARATUS AND PROCESS FOR GRANULATING A METAL MELT - The invention relates to an apparatus and a process for granulating a metal melt. The apparatus substantially comprises a round water tank, into which water is injected in a tangential direction with the aid of a number of nozzles, so that the water in the tank rotates and forms a parabolic surface. The nozzles are arranged such that they are distributed in height and around the circumference of the tank wall. The uppermost nozzle is located in the region of the surface of the water and produces a stream of water or fan of water lying in the surface of the water. For granulating a metal melt, it is poured continuously from a melting crucible into the stream of water or fan of water of the uppermost nozzle. | 09-01-2011 |
20110184203 | PROCESS FOR PREPARING DIENYL-RUTHENIUM COMPLEXES - The present invention relates to a single-stage process for preparing dienyl-ruthenium complexes of the formula Ru(+II)(dienyl) | 07-28-2011 |
20110166009 | Ink For Producing Catalyst Layers - The invention relates to an ink for producing catalyst layers for electrochemical devices. The ink comprises catalyst materials, ionomer material, water and at least one organic solvent. The organic solvent belongs to the class of tertiary alcohols and/or the class of aliphatic diketones and bears functional groups which are stable to oxidative degradation in the ink. This prevents formation of decomposition products in the ink. The ink of the invention displays a high storage stability and is used for producing catalyst-coated substrates for electrochemical devices, in particular fuel cells (PEMFCs, DMFCs). | 07-07-2011 |
20110146237 | EXHAUST GAS PURIFICATION SYSTEM FOR THE TREATMENT OF ENGINE EXHAUST GASES BY MEANS OF SCR CATALYST - An exhaust gas purification system (method and device) for the treatment of diesel exhaust gases containing nitrogen oxides and hydrocarbons is disclosed, which comprises the addition of ammonia or of a compound decomposable to ammonia into the exhaust gas stream and the subsequent leading of the exhaust gas stream over two successively arranged SCR catalysts with different properties and compositions. Both SCR catalysts are free of vanadium compounds and only the downstream SCR catalyst contains zeolite compounds. The exhaust gas purification system according to the invention is characterized by good “kick-off” behavior at low temperatures and a simultaneously high conversion performance over a wide temperature range. | 06-23-2011 |
20110142737 | SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES IN THE EXHAUST GAS OF DIESEL ENGINES - A catalyst and a process for selective catalytic reduction of nitrogen oxides in diesel engine exhaust gases with ammonia or a compound decomposable to ammonia are described. The exhaust gas to be cleaned is passed together with ammonia or a compound decomposable to ammonia over a catalyst which comprises a zeolite or a zeolite-like compound containing 1-10% by weight of copper, based on the total weight of the zeolite or of the zeolite-like compound, and a homogeneous cerium-zirconium mixed oxide and/or a cerium oxide. The zeolite used or the zeolite-like compound used is selected from the group consisting of chabazite, SAPO-34, ALPO-34 and zeolite-β. | 06-16-2011 |
20110112318 | RUTHENIUM COMPLEXES HAVING (P-P)-COORDINATED DIPHOSPHORUS DONOR LIGANDS AND PROCESSES FOR PREPARING THEM - The invention relates to ruthenium complexes which have a chiral diphosphorus donor ligand and in which the ruthenium has the oxidation state (+11) and the chiral diphosphorus donor ligand has bidentate P—P coordination to the ruthenium. The ruthenium complexes are present in two forms (cationic type A and uncharged type B), are cyclic and have a four- to six-membered ring incorporating the diphosphorus donor ligand. The chiral diphosphorus donor ligands are selected from the group consisting of diphosphines, diphospholanes, diphosphites, diphosphonites and diazaphospholanes. Furthermore, processes for preparing the ruthenium complexes of types A and B, which are based on ligand exchange reactions, are described. The Ru complexes are used as catalysts for homogeneous asymmetric catalysis for preparing organic compounds. | 05-12-2011 |
20110100978 | APPARATUS FOR SHAPING MELTS COMPRISING INORGANIC OXIDES OR MINERALS WITH AN IMPROVED HEATING DEVICE - Fibers, pipes, rods, strips or profiles made of high-melting inorganic oxides or minerals are used in great quantities, for example for reinforcing plastics, ceramics and metals. In order to produce said products, use is made of apparatuses comprising a melt container with an individual orifice, or orifice plate with a multiplicity of orifices, arranged in the base of the melt container. The melt in the melt container has to be kept at as homogeneous as possible an operating temperature above the individual orifice or orifice plate. For this purpose, the melt container is usually heated by a direct through flow of current. This results in high radiation losses to the surroundings and to a correspondingly high need for electric energy. It is proposed, for the heating of the melt, to arrange one or more pipes in the melt container, the pipes having at least one connection to the outside through the container casing, and electric heating elements being inserted into the pipes. This type of heating results in a homogeneous temperature distribution of the melt above the individual orifice or the orifice plate and permits an energy saving of more than 50%. | 05-05-2011 |
20110094207 | METHOD FOR CLEANING INTERNAL COMBUSTION ENGINE EXHAUST GASES - Described is a method for cleaning the exhaust gases of internal combustion engines, which method is suitable for reducing harmful gases and particle emissions. Here, the exhaust gas to be cleaned is conducted, under operating conditions, with a discontinuous profile of the air ratio λ across a wall-flow filter substrate which comprises a catalytically active coating containing one storage material. The storage material is suitable for temporarily storing one or more exhaust-gas components under certain operating conditions and releasing said exhaust-gas components again in a targeted fashion in the event of a suitable change in the operating conditions. The coating is configured such that the component has a gradient of the storage material concentration and/or of the total coating amount, with the highest concentration of the storage material in the longitudinal direction of the component being present on the inflow side. At least 60% by weight of the storage material in relation to its total amount is present in the walls between inflow and outflow ducts, and at least 50% by weight of the storage material in relation to its total amount is present in a first, inflow-side zone in the wall-flow filter substrate. | 04-28-2011 |
20110086295 | CORE / SHELL-TYPE CATALYST PARTICLES AND METHODS FOR THEIR PREPARATION - The invention discloses core/shell type catalyst particles comprising a M | 04-14-2011 |
20110064825 | Method for preparing dispersions of precious metal nanoparticles and for isolating such nanoparticles from said dispersions - The present invention is directed to a method for preparing colloidal dispersions of precious metal nanoparticles selected from the group consisting of Pt, Au, Pd, Ag, Rh, Ru and mixtures or alloys thereof, and to a method for isolating such precious metal nanoparticles from these colloidal dispersions. The colloidal dispersions are prepared by reducing suitable precious metal precursor compounds in aqueous alkaline solutions at reaction temperatures between 40 and 70° C. and a pH≧12.0 in the presence of polysaccharides with average molecular weights (M | 03-17-2011 |
20110056187 | METHOD FOR DECREASING NITROGEN OXIDES IN HYDROCARBON-CONTAINING EXHAUST GASES USING AN SCR CATALYST BASED ON A MOLECULAR SIEVE - The invention relates to a process for treating diesel engine exhaust gases comprising nitrogen oxides (NO | 03-10-2011 |
20110032791 | STIRRING SYSTEM AND METHOD FOR HOMOGENIZING GLASS MELTS - The invention relates to a stirring system for molten glass and to a stirring vessel ( | 02-10-2011 |
20110021798 | Ruthenium Complexes with (P-P)-Coordinated Ferrocenyldiphosphine Ligands, Process for Preparing Them and Their Use in Homogeneous Catalysis - The invention relates to ruthenium complexes with a chiral ferrocenyldiphosphine ligand, wherein the ruthenium has the oxidation state (+II) and the chiral ferrocenyldiphosphine ligand has bidentate P—P coordination to the ruthenium. The ruthenium complexes are cyclic and with the ferrocenyldiphosphine ligand have an at least eight-membered ring. The ferrocenyldiphosphine ligands are selected from the group consisting of Taniaphos, Taniaphos-OH and Walphos ligands. A process for preparing the Ru complexes is described. The Rn complexes are used as catalysts for homogeneous asymmetric catalysis for preparing organic compounds. | 01-27-2011 |
20110000189 | DENOX OF DIESEL ENGINE EXHAUST GASES USING A TEMPERATURE-CONTROLLED PRECATALYST FOR PROVIDING NO2 IN ACCORDANCE WITH THE REQUIREMENTS - The adherence to future legally obligatory exhaust gas limit values for diesel vehicles in Europe, North America and Japan requires not only the removal of particles but also effective removal of nitrogen oxides from the exhaust gas (‘deNOx’). The ‘active SCR process’ is the preferred method for this. The nitrogen oxide conversions achieved by means of this process are particularly high when an optimal NO | 01-06-2011 |
20100192370 | METHOD AND DEVICE FOR PRODUCING A WIRE FROM COPPER OR FROM A COPPER ALLOY - The invention describes the production of a wire from copper or from a copper alloy in a continuous method, starting from an alloy block which is extruded in an extrusion press into a raw wire and is drawn, without interruption, to the finished dimension in a drawing apparatus. | 08-05-2010 |
20100190641 | Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith - The present invention provides a method for manufacture of supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method is based on the use of polyol solvents as reaction medium and comprises of a two-step reduction process in the presence of a support material. In the first step, the first metal (M1 =transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (M2=noble metal; e.g. Pt, Pd, Au and mixtures thereof) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. Due to this two-step method, an uniform reduction occurs, resulting in noble metal based catalysts with a high degree of alloying and a small crystallite size of less than 3 nm. Due to the high degree of alloying, the lattice constants are lowered. The catalysts manufactured according to the method are used as electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC), direct-methanol fuel cells (DMFC) or as gas phase catalysts for CO oxidation or exhaust gas purification. | 07-29-2010 |
20100174068 | Complex of Ruthenium and Osmium, Method of Production Thereof and Use Thereof As (Pre)Catalysts of the Metathesis Reaction - Complexes of ruthenium and osmium according to the invention are represented by formula (1), in which M denotes ruthenium or osmium, L denotes a neutral ligand selected from the group comprising amines, imines, phosphines (preferably stilbines, arsines, alcohols, thiols, ethers and thioethers or an N-heterocyclic carbene (NHC) ligand). The compounds of formula (1) occur in the form of two isomers: trans and cis. The method of production of complexes of ruthenium and osmium of formula (1) according to the invention is based on reacting an intermediate of formula (5) with a carbene complex of ruthenium or osmium. The invention also relates to the use of the complexes according to the invention for carrying out metathesis reactions. | 07-08-2010 |
20100101210 | Method for Regenerating Soot Filters in the Exhaust Gas System of a Lean Mix Engine, and Exhaust Gas System Therefor - To adhere to legal exhaust-gas regulations, the exhaust gases of a lean-burn engine must be freed from soot particles and nitrogen oxides. It is proposed that the cylinders of the lean-burn engine be divided into two groups which discharge their exhaust gases into two associated exhaust lines which each comprise a soot filter and which are merged at an opening-in point into a common exhaust line. The common exhaust line comprises the catalytic converter for the removal of the nitrogen oxides. By regenerating the two soot filters at different times, the exhaust-gas temperature in the common exhaust line is limited to a mean temperature between the exhaust-gas temperature of normal operation and that of regeneration operation, and the catalytic converter for the removal of the nitrogen oxides is preserved. | 04-29-2010 |
20100095658 | CATALYST SYSTEM AND USE THEREOF - Soot filters for removing soot from the exhaust gas of lean-burn engines become blocked with progressive operating duration on account of the deposition of soot, and must therefore be regenerated at regular intervals. It has been found that reliable operation of the soot filter is possible only if an active regeneration is carried out from time to time by increasing the exhaust-gas temperature to the soot ignition temperature. For this purpose, an oxidation catalytic converter is usually arranged upstream of the soot filter, and the exhaust-gas temperature is increased by means of the catalytic combustion of additionally injected fuel. Here, the oxidation catalytic converter is subjected to high temperature loading and therefore ages very quickly. It has surprisingly been found that the ageing of the oxidation catalytic converter can be slowed if said oxidation catalytic converter is split into at least two separate catalytic converters and the distance between said separate catalytic converters is 2 to 30 mm. | 04-22-2010 |
20100092841 | CORE / SHELL-TYPE CATALYST PARTICLES COMPRISING METAL OR CERAMIC CORE MATERIALS AND METHODS FOR THEIR PREPARATION - The invention is directed to core/shell type catalyst particles comprising a M | 04-15-2010 |
20100086832 | CORE / SHELL-TYPE CATALYST PARTICLES AND METHODS FOR THEIR PREPARATION - The invention discloses core/shell type catalyst particles comprising a M | 04-08-2010 |
20090305874 | METHOD FOR CATALYTICALLY COATING CERAMIC HONEYCOMB BODIES - The invention relates to a process for coating ceramic honeycomb bodies with a coating suspension containing, in a carrier liquid, catalyst components as solids and/or in dissolved form. The honeycomb bodies have parallel flow channels running through them. The walls of the flow channels generally have an open pore structure. To coat the channel walls and in particular also the interior surfaces of the pores with the coating suspension, it is proposed that the flow channels be temporarily alternately closed and the coating suspension be forced through the open pore structure of the channel walls. The coating is subsequently dried and calcined. To close the flow channels, it is possible to use thermally or chemically decomposable or soluble compositions which are decomposed or dissolved either during calcination or by means of a subsequent chemical treatment. The coated honeycomb bodies are preferably used for the purification of exhaust gases from automobiles. | 12-10-2009 |
20090297415 | Method For Operating A Nitrogen Oxide Storage Catalyst In A Diesel Engine - A nitrogen oxide storage catalytic converter which is operated for a relatively long time at low exhaust-gas temperatures in the range between 120 and 250° C. exhibits a decreasing storage capacity as a result of incomplete regeneration at said temperatures. In order to re-establish the original storage capacity of the catalytic converter which is operated in this way, two-stage regeneration is proposed, wherein the storage catalytic converter is initially partially regenerated at the low exhaust gas temperature by means of a switch from the lean mode to the rich mode, and wherein subsequently, with rich exhaust gas again, the exhaust-gas temperature of the engine is raised into a range of between 300 and 400° C. for complete regeneration. | 12-03-2009 |
20090220834 | MEMBRANE-ELECTRODE ASSEMBLY HAVING A MULTICOMPONENT SEALING RIM - The invention relates to a membrane-electrode assembly having a multicomponent sealing rim, with the rim components being joined by means of two different joining methods. The rim construction of the membrane-electrode assembly comprises at least two materials (sealing material A and frame B) which are joined to one another both by adhesion and by physical locking. The frame B has at least one perforation through which the sealing material penetrates and establishes an intermeshing connection. Adhesive bonding methods, lamination processes and/or injection moulding processes are suitable for producing the multicomponent rim and the corresponding membrane-electrode assembly. The multicomponent rim construction has a high bond strength. The membrane-electrode assembly having a multicomponent rim is used in electrochemical devices such as fuel cells (PEMFCs, DMFCs, etc.), electrolysers or electrochemical sensors. | 09-03-2009 |
20090137386 | Catalytically coated particle filter and method for producing the same and its use - The invention proposes a particulate filter having a catalytic coating which contains two catalysts arranged one behind the other. The first catalyst is located in the gas inlet region of the filter and contains a palladium/platinum catalyst. The second catalyst is arranged downstream of the first catalyst and preferably contains platinum alone as catalytically active component. The combination of these two catalysts provides the coated filter with a good ageing stability and resistance to sulphur poisoning. | 05-28-2009 |
20090129995 | Method for coating a surface filter with a finely divided solids, filter so obtained and its use - Coating a wall-flow filter with a catalytically active coating generally increases the exhaust-gas backpressure in the filter. The increase in the exhaust-gas backpressure is particularly pronounced if a slurry of fine-particle catalyst materials is used for the coating operation. The increase in the exhaust-gas backpressure can be restricted to a tolerable level if, prior to the coating operation, the slurry is so finely milled that virtually the entire mass of the catalyst materials is introduced into the pores of the filter and deposited on the inner surfaces of the pores. This is the case if the d | 05-21-2009 |
20090062117 | Nitrogen oxide storage material and nitrogen oxide storage catalyst produced therefrom - A nitrogen oxide storage material which is based on storage compounds of elements selected from the group consisting of magnesium, calcium, strontium, barium, the alkali metals, the rare earth metals and mixtures thereof and has a homogeneous magnesium-aluminium mixed oxide doped with cerium oxide as support material for the storage compounds is described. Nitrogen oxide storage catalysts using this storage material display a broad working range, a high storage efficiency and good ageing resistance. | 03-05-2009 |
20090053583 | GAS DIFFUSION ELECTRODE AND PROCESS FOR PRODUCING IT AND ITS USE - The invention describes a process for producing a gas diffusion electrode which has a catalyst layer having a smooth surface, wherein the smooth surface of the catalyst layer is produced by bringing the catalyst layer in the moist state into contact with a transfer film and removing this transfer film after drying. In variant A, the catalyst layer is firstly produced on a transfer film and then transferred in the moist state to the gas diffusion layer. In variant B, the catalyst layer is applied to the gas diffusion layer, and a transfer film is then placed on top. In both cases, the structure produced in this way is subsequently dried. Before further processing, the transfer film is removed to give a gas diffusion electrode having a smooth catalyst surface which has a maximum profile peak height (Rp) of less than 25 microns. The electrodes are used for producing membrane-electrode assemblies for membrane fuel cells or other electrochemical devices. Membrane-electrode assemblies comprising the gas diffusion electrodes of the invention display very good long-term behaviour. | 02-26-2009 |
20080314030 | Method for Operating a Nitrogen Oxide Storage Catalytic Converter in a Motor Vechicle with Consideration of Regional Fuel Qualities - The fuel qualities for vehicles differ, for example, in Europe on a regional basis. This applies in particular to the sulphur content of the fuel. If vehicles with modern lean engines or with diesel engines which are equipped with nitrogen oxide storage-type catalytic converters in order to reduce the nitrogen oxide content in their exhaust gas pass through regions with a sulphur content in the fuel which is above the sulphur content which is specified for the vehicle, the engine controller will correspondingly frequently initiate desulphurization of the storage-type catalytic converter after the vehicle has been refuelled with this fuel. Any desulphurization entails an increased level of fuel consumption and greater ageing of the catalytic converter. It is proposed to avoid these adverse effects in that in lean motors the engine controller switches to stoichiometric operation in such a case, and in a diesel engine said engine controller prevents the desulphurization. The information about the region in which the vehicle is moving at a particular time can be transmitted to the engine controller by a navigation system. | 12-25-2008 |
20080282501 | Annular Disc of Bent Sheet Material - The invention relates to an annular disc of bent sheet material ( | 11-20-2008 |
20080247931 | Method for Producing Multi-Constituent, Metal Oxide Compounds Containing Alkali Metals,and thus Produced Metal Oxide Compounds - The preparation of finely divided, alkali metal-containing metal oxide powders which contain at least one alkali metal and at least one further metal from the group consisting of the transition metals, the remaining main group metals, the lanthanides and actinides is described. Precursor compounds of these components are introduced in solid form or in the form of a solution or a suspension into a pulsation reactor having a gas flow resulting from a flameless combustion and partly or completely converted into the desired multicomponent metal oxide powder. | 10-09-2008 |
20080241543 | Silver/Carbon-Based Material and Method for Producing the Same - The invention relates to a process for producing a material based on silver-carbon, comprising the steps of:
| 10-02-2008 |