| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 502326000 | Of platinum group metal and of iron group (i.e., Ru, Rh, Pd, Os, Ir, or Pt and Fe, Co or Ni) | 21 |
| 20120208696 | HIGHLY DURABLE NANOSCALE ELECTROCATALYST BASED ON CORE SHELL PARTICLES - A multimetallic nanoscale catalyst having a core portion enveloped by a shell portion and exhibiting high catalytic activity and improved catalytic durability. In various embodiments, the core/shell nanoparticles comprise a gold particle coated with a catalytically active platinum bimetallic material. The shape of the nanoparticles is substantially defined by the particle shape of the core portion. The nanoparticles may be dispersed on a high surface area substrate for use as a catalyst and is characterized by no significant loss in surface area and specific activity following extended potential cycling. | 08-16-2012 |
| 20130053239 | Synthesis Of Platinum-Alloy Nanoparticles And Supported Catalysts Including The Same - Methods of synthesizing platinum-nickel-alloy nanoparticles and supported catalysts comprising the nanoparticles are provided. The methods may comprise forming a reaction mixture in a reaction vessel; heating the reaction mixture sealed in the reaction vessel to a reaction temperature; maintaining the temperature of the reaction vessel for a period of time; cooling the reaction vessel; and removing platinum-alloy nanoparticles from the reaction vessel. The reaction mixture may comprise a platinum precursor, a nickel precursor, a formamide reducing solvent, and optionally a cobalt precursor. In some embodiments the reaction temperature is at or below the boiling point of the formamide reducing solvent, such as from about 120° C. to about 150° C., for example. The platinum-alloy nanoparticles provide favorable electrocatalytic activity when supported on a catalyst support material. | 02-28-2013 |
| 20090298684 | METHOD OF MANUFACTURING MULTICOMPONENT NANOPARTICLES - Multicomponent nanoparticles include two or more dissimilar components selected from different members of the group of noble metals, base transition metals, alkali earth metals, and rare earth metals and/or different groups of the periodic table of elements. The two or more dissimilar components are dispersed using a polyfunctional dispersing agent such that the multicomponent nanoparticles have a substantially uniform distribution of the two or more dissimilar components. The polyfunctional dispersing agent may include organic molecules, polymers, oligomers, or salts of these. The molecules of the dispersing agent bind to the dissimilar components to overcome same-component attraction, thereby allowing the dissimilar components to form multicomponent nanoparticles. Dissimilar components such as iron and platinum can be alloyed together using the dispersing agent to form substantially uniform multicomponent nanoparticles, which can be used alone or with a support. At least a portion of the dispersing agent is removed by reduction and/or oxidation. | 12-03-2009 |
| 20090286680 | Exhaust Gas Purification Catalyst and Exhaust Gas Purification Catalyst Member - The present invention provides an exhaust gas purification catalyst and catalyst member superior in exhaust gas purification performance and heat resistance, low in cost, and reducing use of precious metals, that is, an exhaust gas purification catalyst, and a catalyst member using the same, comprising a composite oxide having a substantially perovskite type crystalline structure and expressed by the following formula <1> on which one or more elements selected from at least Pt, Pd, and Rh are carried: | 11-19-2009 |
| 20090082199 | Catalyst for Purifying Exhaust Gases - A catalyst for purifying exhaust gases includes a carrier substrate and a catalyst layer which is carried on the carrier substrate and contains a noble metal, a porous oxide and an addition oxide containing at least one selected from the group consisting of Ni, Bi, Sn, Fe, Co, Cu and Zn. Only a downstream section of the carrier substrate, which is located on a downstream side of an exhaust gas stream contains the addition oxide, whereas an upstream section of the carrier substrate does not contain the addition oxide. With this arrangement, in the upstream section of the carrier substrate, the noble metal and the addition oxide do not exist together so that the noble metal is not deteriorated with the addition oxide. As a result, in the upstream section, the purification performance as a three-way catalyst is favorably achieved, thereby restraining the emission of H | 03-26-2009 |
| 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 |
| 20090215615 | METHOD OF FORMING SUPPORTED NANOPARTICLE CATALYSTS - A method of forming a supported catalyst, the method comprising forming a colloidal suspension of platinum-iron catalyst nanoparticles in a solvent, depositing at least a portion of the catalyst nanoparticles onto support particles, and removing at least a portion of the iron from the deposited catalyst nanoparticles. | 08-27-2009 |
| 20080242537 | Method for Producing Amines with a Catalyst Containing Platinum, Nickel and an Additional Metal - The invention provides a process for preparing aromatic amines by catalytically hydrogenating the corresponding nitro compounds, especially for preparing tolylenediamine by hydrogenating dinitrotoluene, which comprises using hydrogenation catalysts in which the active component present is a mixture of platinum, nickel and an additional metal on a support. | 10-02-2008 |
| 20110003683 | NANOSTRUCTURED PLATINUM ALLOYS FOR USE AS CATALYST MATERIALS - A series of binary and ternary Pt-alloys, that promote the important reactions for catalysis at an alloy surface; oxygen reduction, hydrogen oxidation, and hydrogen and oxygen evolution. The first two of these reactions are essential when applying the alloy for use in a PEMFC. | 01-06-2011 |
| 20100022388 | Preparation of high activity cobalt catalysts, the catalysts and their use - A method is provided for preparing a supported cobalt-containing catalyst having substantially homogeneously dispersed, small cobalt crystallites. The method comprises depositing cobalt nitrate on a support and then subjecting the support to a two-step decomposition protocol. In the first step, the support is heated in an oxygen-containing, substantially water-free atmosphere to about 160° C. to form an intermediate decomposition product. This intermediate product is then or hydrolyzed and reduced, or hydrolyzed, calcined and reduced. | 01-28-2010 |
| 20080207439 | Hydrogenation of imine intermediates of sertraline with catalysts - Provided are hydrogenation processes of sertraline imine intermediates with catalysts in various reactors. | 08-28-2008 |
| 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 |
| 20110124499 | CATALYTIC PLATINUM AND ITS 3d-TRANSITION-METAL ALLOY NANOPARTICLES - Platinum (Pt)-based alloys are effective catalysts for oxygen reduction reaction (ORR) or fuel oxidation in proton exchange membrane fuel cells (PEMFCs). A wet-chemical approach for preparing monodisperse Pt | 05-26-2011 |
| 20100197490 | Platinum-Coated Non-Noble Metal-Noble Metal Core-Shell Electrocatalysts - Core-shell particles encapsulated by a thin film of a catalytically active metal are described. The particles are preferably nanoparticles comprising a non-noble core with a noble metal shell which preferably do not include Pt. The non-noble metal-noble metal core-shell nanoparticles are encapsulated by a catalytically active metal which is preferably Pt. The core-shell nanoparticles are preferably formed by prolonged elevated-temperature annealing of nanoparticle alloys in an inert environment. This causes the noble metal component to surface segregate and form an atomically thin shell. The Pt overlayer is formed by a process involving the underpotential deposition of a monolayer of a non-noble metal followed by immersion in a solution comprising a Pt salt. A thin Pt layer forms via the galvanic displacement of non-noble surface atoms by more noble Pt atoms in the salt. The overall process is a robust and cost-efficient method for forming Pt-coated non-noble metal-noble metal core-shell nanoparticles. | 08-05-2010 |
| 20120264598 | SYNTHESIS OF PLATINUM-ALLOY NANOPARTICLES AND SUPPORTED CATALYSTS INCLUDING THE SAME - Methods of synthesizing platinum-alloy nanoparticles, supported catalysts comprising the nanoparticles, and further methods of forming supported catalysts comprising Pt | 10-18-2012 |
| 502327000 | And Group III metal containing (i.e., Sc, Y, Al, Ga, In or Tl) | 6 |
| 20100093526 | CATALYST COMPOSITION - Disclosed is a catalyst composition containing a composite oxide. The composite oxide contains a transition element (excluding platinum group elements) which is transformed into a solid solution in the composite oxide under an oxidizing atmosphere and is precipitated from the composite oxide under a reducing atmosphere. | 04-15-2010 |
| 20100227759 | Catalyst Composition - Provided is a catalyst composition capable of preventing decrease in catalytic activity due to grain growth of noble metal under high temperature or under change in oxidation reduction or further for long term use, and of achieving excellent catalytic activity over a long time. | 09-09-2010 |
| 20090005242 | Catalyst for Synthesizing Hydrocarbons C5-C100 and Method of Preparation Thereof - The invention relates to petroleum, gas, and coal chemistry, especially to catalysts for C | 01-01-2009 |
| 20110237430 | PROCESS FOR PREPARING CATALYST COMPRISING PALLADIUM SUPPORTED ON CARRIER WITH HIGH DISPERSION - A process for preparing a catalyst comprising palladium supported on a carrier via a layered precursor, comprising the following steps: (1) synthesis of hydrotalcite layered precursor which comprises promoting metal element and aluminium on the surface of the carrier of Al | 09-29-2011 |
| 20120329645 | REFORMING CATALYST - Process for the steam reforming of hydrocarbons comprising contacting a feed gas with a catalyst consisting of an active compound in the form of an alloy of nickel and one of iridium, rhodium and ruthenium, on a support comprising alumina, zirconia, magnesia, titania, or combinations thereof. | 12-27-2012 |
| 20100167920 | Exhaust gas purification catalyst and exhaust gas purification honeycomb structure with catalyst - Disclosed are: an exhaust gas purification catalyst which is an inexpensive three-way catalyst, which contains a reduced amount of an expensive noble metal, particularly does not use Pt, and contains no expensive rare earth element, and which has the same level of catalytic activity as that of a conventional one; and a catalytic honey-comb structure for exhaust gas purification. Specifically disclosed are: an exhaust gas purification catalyst comprising (Λ) an oxide M(Co | 07-01-2010 |
