Patent
Diesel oxidation catalysts
Miodrag Oljaca,Ranko P. Bontchev,Paolina Atanassova,Berislav Blizanac,Yipeng Sun,Matthew C. Ezenyilimba,George P. Fotou,Kenneth C. Koehlert +7 more
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In this paper, an X-ray diffraction pattern was obtained for a catalytic alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25, with a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition.Abstract:
A catalyst composition comprises a particulate support and catalyst nanoparticles on the particulate support. The catalyst nanoparticles comprise an alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25 and are present in a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition. The catalyst composition has an X-ray diffraction pattern that is substantially free of the (311) diffraction peak assignable to PtxPd1-x, where 0.25≦x≦0.75.read more
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Three-way catalytic converter using nanoparticles
Xiwang Qi,Maximilian A. Biberger +1 more
TL;DR: In this article, a substrate comprising nanomaterials for three-way catalytic converters for treatment of exhaust gases is described, and the methods of preparation of the nanommaterials and the substrate comprising the materials are discussed.
Patent
Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
TL;DR: In this article, the authors have discussed methods of forming coated substrates for use in catalytic converters, as well as washcoat compositions and methods suitable for using in preparation of the coated substrate.
Patent
Pinning and affixing nano-active material
TL;DR: In this paper, a nanoparticle comprises a nano-active material and nano-support, and the interface formed comprises a platinum copper intermetallic compound, which provides an even stronger bond than that of a wet catalyst.
Patent
Advanced catalysts for automotive applications
TL;DR: In this article, the advanced catalyst used in diesel engines is a two-way catalyst and in the three-way catalysts, the nano-active material is platinum, palladium, rhodium, or an alloy.
Patent
Method of forming a catalyst with inhibited mobility of nano-active material
TL;DR: In this paper, a method of forming a catalyst, comprising of support particles and a plurality of mobility-inhibiting particles, was proposed, where each support particle in the plurality of support particle is bonded with its own catalytic particle.
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Patent
Electrocatalyst powders, methods for producing powders and devices fabricated from same
Mark J. Hampden-Smith,Toivo T. Kodas,Plamen Antanassov,Klaus Kunze,Paul Napolitano,Rimple Bhatia,David Dericotte,Paolina Atanassova +7 more
TL;DR: In this article, carbon composite electrocatalyst powders have a well-controlled microstructure and morphology, and the method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature.
Patent
Aerosol method and apparatus, particulate products, and electronic devices made therefrom
Mark J. Hampden-Smith,Toivo T. Kodas,Quint H. Powell,Daniel J. Skamser,James Caruso,Clive D. Chandler +5 more
TL;DR: In this article, an ultrasonic aerosol method was proposed for preparing powders of a variety of materials using a plurality of ultrasonic transducers underlying and ultrasonically energizing a reservoir of liquid feed.
Patent
Pt-Pd Diesel Oxidation Catalyst with CO/HC Light-off and HC Storage Function
Torsten Müller-Stach,Alfred Punke,Gerd Grubert,Marcus Hilgendorff,Helke Doering,Torsten Neubauer,Xiaolai Zheng,Chung-Zong Wan,Wen-Mei Xue,Patrick Burk +9 more
TL;DR: In this article, a diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx), is presented.
Patent
Metal-carbon composite powders, methods for producing powders and devices fabricated from same
TL;DR: In this article, a method for producing metal-carbon composite powders is described, which includes forming the particles from an aerosol of powder precursors, and also includes novel devices and products formed from the composite powder.
Journal ArticleDOI
Flame-made alumina supported Pd-Pt nanoparticles: structural properties and catalytic behavior in methane combustion
TL;DR: In this article, bimetallic palladium-platinum nanoparticles supported on alumina were prepared by flame spray pyrolysis and tested for catalytic combustion of methane with a focus on the thermal stability of the noble metal particles.