From Gaseous Reactants Patents (Class 423/447.3)
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Publication number: 20150064092Abstract: Methods of producing fibrous solid carbon forests include reacting carbon oxides with gaseous reducing agents in the presence of a catalyst having a predetermined grain size to cause growth of fibrous solid carbon forests upon a surface of the metal. The fibrous solid carbon forests are substantially perpendicular to the surface of the metal thus creating the “forests”. A bi-modal forest composition of matter is described in which a primary distribution of fibrous solid carbon comprises the forest and a secondary distribution of fibrous solid carbon is entangled with the primary distribution. A reactor includes a catalyst, a means for facilitating the reduction of a carbon oxide to form solid carbon forests on a surface of the catalyst, and a means for removing the solid carbon forest from the surface of the metal catalyst.Type: ApplicationFiled: March 15, 2013Publication date: March 5, 2015Applicant: SEERSTONE LLCInventor: Dallas B. Noyes
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Publication number: 20150059527Abstract: A method of treating an offgas includes purifying the offgas to remove particulate matter, water, undesirable gaseous components and inert gases to produce a dried carbon oxide gas feedstock, and converting at least a portion of carbon oxides in the dried carbon oxide gas feedstock into solid carbon. In other embodiments, a method includes passing a dried carbon oxide gas feedstock through a multi-stage catalytic converter. A first stage is configured to catalyze methane-reforming reactions to convert methane into carbon dioxide, carbon monoxide and hydrogen with residual methane. A second stage is configured to catalyze the Bosch reaction and convert carbon oxides and hydrogen to solid carbon and water.Type: ApplicationFiled: March 15, 2013Publication date: March 5, 2015Inventor: Dallas B. Noyes
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Publication number: 20150037240Abstract: Methods of preparing a sulfur-containing catalyst for the chirally selective synthesis of single-walled carbon nanotubes are presented. Sulfur-containing catalysts for the chirally selective synthesis of single-walled carbon nanotubes, the catalysts comprising sulfur-doped transition metal as active phase on a support, and methods of forming single-walled carbon nanotubes having a selected chirality using the catalysts are also presented.Type: ApplicationFiled: March 12, 2013Publication date: February 5, 2015Inventor: Yuan Chen
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Patent number: 8945502Abstract: An electronics component is disclosed herein. The electronics component include a substrate and a plurality of single-walled carbon nanotubes (SWNTs) formed on said substrate, wherein said plurality of SWNTs form a patterned, dense and high-quality arrays of single-walled carbon nanotubes (SWNTs) on quartz wafers by using FeCl3/polymer as catalytic precursors and chemical vapor deposition (CVD) of methane. With the assistance of polymer, the catalysts may be well-patterned on the wafer surface by simple photolithography or polydimethylsiloxane (PDMS) stamp microcontact printing (?CP).Type: GrantFiled: April 24, 2009Date of Patent: February 3, 2015Assignee: The Regents of the University of CaliforniaInventors: Peter J. Burke, Weiwei Zhou, Christopher M. Rutherglen
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Publication number: 20150020954Abstract: The present invention provides apparatus and methods for growing fullerene nanotube forests, and forming nanotube films, threads and composite structures therefrom. In some embodiments, an interior-flow substrate includes a porous surface and one or more interior passages that provide reactant gas to an interior portion of a densely packed nanotube forest as it is growing. In some embodiments, a continuous-growth furnace is provided that includes an access port for removing nanotube forests without cooling the furnace substantially. In other embodiments, a nanotube film can be pulled from the nanotube forest without removing the forest from the furnace. A nanotube film loom is described. An apparatus for building layers of nanotube films on a continuous web is described.Type: ApplicationFiled: September 30, 2014Publication date: January 22, 2015Inventors: Alexander B. Lemaire, Charles A. Lemaire, Leif T. Stordal, Dale J. Thomforde
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Publication number: 20150023864Abstract: A method for manufacturing a large-area carbon nanotube film is provided. A helical-shaped substrate having a smoothly curved surface configured for growing carbon nanotube film thereon is provided. The helical-shaped substrate is fixed in a reactor chamber using a supporter. The helical-shaped substrate gradually increases along an axis of the reactor chamber, and the supporter is substantially perpendicular to the axis of the reactor chamber. A catalyst layer is formed on the smoothly curved surface of the substrate. A carbon nanotube film is grown on the smoothly curved surface of the helical-shaped substrate by a chemical vapor deposition process.Type: ApplicationFiled: September 29, 2014Publication date: January 22, 2015Inventors: CHANG-HONG LIU, SHOU-SHAN FAN
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Publication number: 20150017087Abstract: Carbon fibers containing at least one element (I) selected from the group consisting of Fe, Co and Ni, at least one element (II) selected from the group consisting of Sc, Ti, V, Cr, Mn, Cu, Y, Zr, Nb, Tc, Ru, Rh, Pd, Ag, a lanthanide, Hf, Ta, Re, Os, Ir, Pt and Au, and at least one element (III) selected from the group of W and Mo, wherein the element (II) and the element (III) each is 1 to 100 mol % relative to the mols of element (I).Type: ApplicationFiled: September 26, 2014Publication date: January 15, 2015Applicant: SHOWA DENKO K.K.Inventors: Akihiro KITAZAKI, Eiji KANBARA
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Patent number: 8926933Abstract: The present invention is directed to methods of making nanofiber yarns. In some embodiments, the nanotube yarns comprise carbon nanotubes. Particularly, such carbon nanotube yarns of the present invention provide unique properties and property combinations such as extreme toughness, resistance to failure at knots, high electrical and thermal conductivities, high absorption of energy that occurs reversibly, up to 13% strain-to-failure compared with the few percent strain-to-failure of other fibers with similar toughness, very high resistance to creep, retention of strength even when heated in air at 450° C. for one hour, and very high radiation and UV resistance, even when irradiated in air.Type: GrantFiled: November 9, 2005Date of Patent: January 6, 2015Assignee: The Board of Regents of The University of Texas SystemInventors: Mei Zhang, Ray H. Baughman, Kenneth Ross Atkinson
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Patent number: 8926934Abstract: A method for growing an array of carbon nanotubes includes the steps of: (a) providing a substrate; (b) forming a catalyst film on the substrate, the catalyst film including carbonaceous material; (c) introducing a mixture of a carrier gas and a carbon source gas flowing across the catalyst film; (d) focusing a laser beam on the catalyst film to locally heat the catalyst to a predetermined reaction temperature; and (e) growing an array of the carbon nanotubes from the substrate.Type: GrantFiled: November 2, 2007Date of Patent: January 6, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Zhuo Chen, Chun-Xiang Luo, Shou-Shan Fan
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Publication number: 20140370282Abstract: Provided is a method of efficiently producing carbon fibers that can impart sufficient electrical or thermal conductivity to a material even by the addition of a small amount of the carbon fibers. The method of producing carbon fibers involves preparing a catalyst by allowing a carrier composed of silica-titania particles comprising silica in the core and titania in the shell of the particle to support a catalytic element, such as Fe element, Co element, Mo element, or V element, and bringing the catalyst into contact with a carbon element-containing material, such as methane, ethane, ethylene, or acetylene, under heating region at about 500 to 1000° C.Type: ApplicationFiled: December 27, 2012Publication date: December 18, 2014Inventors: Ryuji Yamamoto, Yuusuke Yamada, Takeshi Nakamura
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Publication number: 20140369921Abstract: Catalyst support means for producing a fluid catalyst; a reduction basin that pretreats an active metal of the obtained fluid catalyst in a reducing atmosphere; a fluid bed reactor which is supplied with a reduction-treated fluid catalyst having undergone the reduction, for producing a nanocarbon material; and a moisture application basin for supplying a slight amount of moisture to a source gas to be supplied to the aforementioned fluid bed reactor are provided.Type: ApplicationFiled: February 26, 2013Publication date: December 18, 2014Inventors: Tomoaki Sugiyama, Kiyoshi Tatsuhara, Ikumasa Koshiro, Atsushi Tanaka, Yasushi Mori, Takashi Kurisaki
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Patent number: 8911701Abstract: An industrial process and an apparatus for fabricating carbon nanotubes (CNTs) is provided, comprising synthesis of the carbon nanotubes by decomposing a carbon source brought into contact, in a fluidized-bed reactor, whereby the carbon nanotubes synthesized in the reactor and fixed onto the grains of catalytic substrate in the form of an entangled three-dimensional network, forming agglomerates constituting the CNT powder, are recovered sequentially by discharging them while hot, that is to say at the reaction temperature for synthesizing the CNTs, at the foot of the reactor, the sequence in which the discharges are carried out corresponding to the frequency of filling of the reactor.Type: GrantFiled: March 20, 2012Date of Patent: December 16, 2014Assignee: Arkema FranceInventors: Patrice Gaillard, Serge Bordere
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Patent number: 8906338Abstract: A method for making a carbon nanotube film is provided. In the method, a carbon nanotube array is grown on a substrate, and a rigid drawing device is provided. The carbon nanotube array is adhered to the rigid drawing device via an planar adhesive region of the rigid drawing device. The rigid drawing device is pulled at a speed along a direction away from the substrate, thereby pulling out a continuous carbon nanotube film. The carbon nanotube array includes a plurality of carbon nanotubes. The planar adhesive region have a linear border, wherein the linear border of the planar adhesive region is the closest border of the planar adhesive region to a surface of the substrate. The carbon nanotubes in the carbon nanotube array are adhered via the planar adhesive region.Type: GrantFiled: December 3, 2009Date of Patent: December 9, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chen Feng, Kai-li Jiang, Liang Liu, Shou-Shan Fan
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Patent number: 8906335Abstract: Broad-area synthesis of aligned and densely-packed carbon nanotubes (CNT) is disclosed. CNT are repeatedly synthesized and then drawn together to locally and globally achieve increased packing densities. The process synthesizes an aligned, relatively sparse forest of CNT on a catalyzed sacrificial substrate. The catalyst is removed, thereby releasing the CNT but leaving them in place on the substrate. A liquid-induced collapse produces regions of more densely packed CNT and regions where no CNT remain. A fresh catalyst is deposited on the exposed regions of the substrate and a sparse forest of aligned CNT is regrown in these regions. The CNT also may form on the tops of the densified regions of CNT. The top-growth CNT may be removed or incorporated into the solid such that the solid is expanded axially. This process, e.g., growth then densification, is repeated to form a near-continuous solid of aligned and densely packed CNT.Type: GrantFiled: May 29, 2008Date of Patent: December 9, 2014Assignee: Lockheed Martin CorporationInventor: Keith A. Slinker
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Patent number: 8900541Abstract: An apparatus for manufacturing a carbon nanotube heat sink includes a board, and a number of first and second carbon nanotubes formed on the board. The first carbon nanotubes and the second nanotubes are grown along a substantially same direction from the board. A height difference exists between a common free end of the first carbon nanotubes and a common free end of the second carbon nanotubes.Type: GrantFiled: October 9, 2012Date of Patent: December 2, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yuan Yao, Feng-Wei Dai, Kai-Li Jiang, Chang-Hong Liu, Liang Liu
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Publication number: 20140348739Abstract: Systems and a method for forming carbon nanotubes are described. A method includes forming carbon nanotubes in a reactor, using a Bosch reaction. The carbon nanotubes are separated from a reactor effluent to form a waste gas stream. The feed gas, a dry waste gas stream, or both, are heated with waste heat from the waste gas stream. The waste gas stream is chilled in an ambient temperature heat exchanger to condense water vapor, forming a dry waste gas stream.Type: ApplicationFiled: December 12, 2012Publication date: November 27, 2014Inventors: Robert D. Denton, Dallas B. Noyes
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Patent number: 8887663Abstract: A system for use in fabrication of carbon nanotubes (CNTs) includes a wafer having a circuitry and a plurality of CNT seed sites. The system also includes a base assembly configured to support the wafer. The system further includes a first tube disposed over the wafer and configured to surround the CNTs that form on the seed sites. The circuitry in the wafer is configured to conduct at least one static charge. The wafer includes a top surface having a plurality of CNT seed sites, each seed site coupled to the circuitry and configured to receive one of the at least one static charge.Type: GrantFiled: September 27, 2011Date of Patent: November 18, 2014Assignees: Samsung Austin Semiconductor, L.P., Samsung Electronics Co., Ltd.Inventors: Robert Stebbins, Russell Olson
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Publication number: 20140335009Abstract: The present invention is used to produce long carbon nanotubes used, for example, in automobile and/or aircraft industry. An object of the invention is to obtain bundles of multi-walled and well oriented nanotubes of sufficient length and provide stability of continuous nanotubes producing process. The method comprises introducing a carbon-bearing component, a promoter and a precursor of a carbon nanotube growth catalyst in a carrier gas stream to form a mixture of these components; passing said mixture through the a reactor heated to an operating temperature of 1000° C. to 1200° C. and removing nanotubes formed in the reactor into a product receiver. The mixture is fed in the reactor from the bottom upwards at a linear flow velocity of 50 mm/c to 130 mm/c. When the temperature in the reactor reaches said operating temperature, the linear flow velocity of the mixture is decreased to 4-10 mm/c, and the linear flow velocity is increased to 30-130 mm/c at the outlet of the reactor.Type: ApplicationFiled: November 28, 2012Publication date: November 13, 2014Applicant: INFRA TECHNOLOGIES LTD.Inventors: Vladimir Zalmanovich Mordkovich, Aida Razimovna Karaeva, Maxim Alexandrovich Khaskov, Eduard Borisovich Mitberg
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Publication number: 20140329085Abstract: The present invention relates to a novel secondary structure of carbon nanostructures, a bundle thereof and a composite comprising the same. The secondary structure according to the present invention is characterized that it is formed by a plurality of carbon nanostructures (CNSs) assembled to have a tube form in whole or in part. The novel secondary structure according to the present invention, the bundle thereof and the composite comprising the same are highly applicable in fields of energy materials, functional composites, batteries, semiconductors and the like.Type: ApplicationFiled: December 21, 2012Publication date: November 6, 2014Inventors: SungJin Kim, Jindo Kim, KyungYeon Kang, JaeKeun Yoon
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Publication number: 20140328744Abstract: Disclosed are carbon nanotubes and a method for manufacturing the same. Advantageously, the method provides a high yield of potato or sphere-shaped non-bundled carbon nanotubes having a bulk density of 80 to 250 kg/m3, an ellipticity of 0.9 to 1.0 and a particle diameter distribution (Dcnt) of 0.5 to 1.0 using a two-component carbon nanotube catalyst comprising a catalyst component and an active component.Type: ApplicationFiled: January 9, 2013Publication date: November 6, 2014Inventors: Kyung Yeon Kang, Jin Do Kim, Sung Jin Kim, Jae Keun Yoon
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Patent number: 8865109Abstract: Systems and methods for the formation of carbon-based nanostructures are generally described. In some embodiments, the nanostructures may be formed on a nanopositor. The nanopositor can comprise, in some embodiments, at least one of metal atoms in a non-zero oxidation state and metalloid atoms in a non-zero oxidation state. For example, the nanopositor may comprise a metal oxide, a metalloid oxide, a metal chalcogenide, a metalloid chalcogenide, and the like. The carbon-based nanostructures may be grown by exposing the nanopositor, in the presence or absence of a growth substrate, to a set of conditions selected to cause formation of carbon-based nanostructures on the nanopositor. In some embodiments, metal or metalloid atoms in a non-zero oxidation state are not reduced to a zero oxidation state during the formation of the carbon-based nanostructures. In some cases, metal or metalloid atoms in a non-zero oxidation state do not form a carbide during the formation of the carbon-based nanostructures.Type: GrantFiled: August 7, 2012Date of Patent: October 21, 2014Assignee: Massachusetts Institute of TechnologyInventors: Stephen A. Steiner, III, Brian L. Wardle
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Patent number: 8865108Abstract: A process for making multi-walled carbon nanotubes includes contacting a hydrocarbon-containing gas with an electron beam-treated fly ash catalyst. The electron beam-treated fly ash catalyst contains a total amount of iron oxide and vanadium oxide of up to 5 wt. %. The multi-walled carbon nanotubes may be formed in a low pressure chemical vapor deposition apparatus.Type: GrantFiled: June 21, 2012Date of Patent: October 21, 2014Inventor: Hashem M. A. Alhebshi
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Patent number: 8865106Abstract: In one embodiment of the disclosure, a composite raw material and a method for forming the same are provided. The method includes sulfonating a polycyclic aromatic compound to form a polycyclic aromatic carbon sulfonate (PCAS); and mixing the polycyclic aromatic carbon sulfonate and a polyacrylonitrile (PAN) to form a composite raw material. In another embodiment of the disclosure, a carbon fiber containing the composite raw material described above and a method for forming the same are provided.Type: GrantFiled: September 13, 2012Date of Patent: October 21, 2014Assignee: Industrial Technology Research InstituteInventors: Tun-Fun Way, Yu-Ting Chen, Jiun-Jy Chen, Hsiao-Chuan Chang
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Patent number: 8865104Abstract: An apparatus for producing high yields of carbon nanostructures is disclosed. The apparatus includes an electric arc furnace and a feeder that directs solid carbon dioxide into an electrical arc generated by the electric arc furnace.Type: GrantFiled: December 21, 2012Date of Patent: October 21, 2014Inventor: Kevin M. Frink
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Patent number: 8852547Abstract: A new method for recovering a catalytic metal and carbon nanotubes from a supported catalyst is provided. The carbon nanotube, including carbon nanotube structures, may serve as the support for the catalytic metal. The valence state of the catalytic metal, if not already in the positive state, is raised to a positive state by contacting the supported catalyst with a mild oxidizing agent under conditions which does not destroy the carbon nanotube. The supported catalyst is simultaneously or subsequently contacted with an acid solution to dissolve the catalytic metal without dissolving the carbon nanotube.Type: GrantFiled: January 23, 2009Date of Patent: October 7, 2014Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Robert Hoch
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Patent number: 8845995Abstract: The present invention relates to single walled and multi-walled carbon nanotubes (CNTs), functionalized CNTs and carbon nanotube composites with controlled properties, to a method for aerosol synthesis of single walled and multi-walled carbon nanotubes, functionalized CNTs and carbon nanotube composites with controlled properties from pre-made catalyst particles and a carbon source in the presence of reagents and additives, to functional, matrix and composite materials composed thereof and structures and devices fabricated from the same in continuous or batch CNT reactors. The present invention allows all or part of the processes of synthesis of CNTs, their purification, doping, functionalization, coating, mixing and deposition to be combined in one continuous procedure and in which the catalyst synthesis, the CNT synthesis, and their functionalization, doping, coating, mixing and deposition can be separately controlled.Type: GrantFiled: March 9, 2005Date of Patent: September 30, 2014Assignee: Canatu OyInventors: Esko Kauppinen, David P. Brown, Albert G. Nasibulin, Hua Jiang, Anna Moisala
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Patent number: 8845996Abstract: The present disclosure is directed to a method of producing metallic single-wall carbon nanotubes by treatment of carbon nanotube producing catalysts to obtain the desired catalyst particle size to produce predominantly metallic single wall carbon nanotubes. The treatment of the carbon nanotube producing catalyst particles involves contacting the catalyst particles with a mixture of an inert gas, like He, a reductant, such as H2, and an adsorbate, like water, at an elevated temperature range, for example, at 500° C. to 860° C., for a sufficient time to obtain the catalyst particle size. In some of the present methods, the preferential growth of nanotubes with metallic conductivity of up to 91% has been demonstrated.Type: GrantFiled: July 28, 2009Date of Patent: September 30, 2014Assignee: Honda Motor Co., Ltd.Inventor: Avetik R. Harutyunyan
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Publication number: 20140286852Abstract: A method for producing carbon nanotubes having specific lengths, said method comprising: producing carbon nanotubes having at least two types of zones along their lengths, wherein each zone type has a characteristic structure that confers specific properties; and processing said carbon nanotubes to selectively attack one zone type more aggressively than another zone type.Type: ApplicationFiled: March 19, 2014Publication date: September 25, 2014Inventors: Nolan Nicholas, David Carnahan
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Publication number: 20140272137Abstract: Method of growing carbon nanotubes which are substantially vertically aligned on a diamond-based substrate via a chemical vapor deposition system utilizing an iron-based catalyst is disclosed.Type: ApplicationFiled: March 17, 2014Publication date: September 18, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Rahul Rao, Avetik Harutyunyan
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Patent number: 8834826Abstract: Provided is an aggregate of carbon nanotubes satisfying (1) there is a 2? peak at 24°±2° by X-ray powder diffraction analysis; (2) a height ratio (G/D ratio) of G band to D band by Raman spectroscopic analysis of wavelength 532 nm is 30 or more; and (3) a combustion peak temperature is from 550° C. to 700° C. The present invention provides an aggregate of carbon nanotubes excellent in dispersibility while high quality, giving a film, molded article, membrane or the like having excellent characteristics.Type: GrantFiled: June 27, 2008Date of Patent: September 16, 2014Assignee: TORAY Industries, Inc.Inventors: Kenichi Sato, Masahito Yoshikawa, Naoyo Okamoto, Shuko Numata
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Patent number: 8834828Abstract: A novel fine carbon fiber is produced by vapor growth, in which a graphite-net plane consisting of carbon atoms alone forms a temple-bell-shaped structural unit comprising closed head-top part and body-part with open lower-end, where an angle ? formed by a generatrix of the body-part and a fiber axis is less than 15°, 2 to 30 of the temple-bell-shaped structural units are stacked sharing a central axis to form an aggregate, and the aggregates are connected in head-to-tail style with a distance, thereby forming a fiber. Furthermore, a fine short carbon fibers with excellent dispersibility can be obtained by shortening the fine carbon fiber.Type: GrantFiled: March 5, 2009Date of Patent: September 16, 2014Assignee: Ube Industries, Ltd.Inventors: Masayuki Nishio, Tsunao Matsuura, Kenji Fukuda
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Patent number: 8834827Abstract: An integrated method and apparatus to continuously produce purified Single Wall Carbon Nanotubes (SWNT) from a continuous supply of solid carbon powder fed to an induction plasma torch. The apparatus includes a reactor body disposed to maintain laminar flow of gases with the torch body and coupled to a quenching body where temperature and residence time is controlled. Conveniently, functionalization may take place in the quenching body. The torch is operated with an argon carrier gas, an argon stabilizing gas and a helium sheath gas. Solid carbon reactants are preferably mixed with at least two metal catalysts containing nickel and cobalt with additional metal oxides of yttrium and cerium being desirable.Type: GrantFiled: March 14, 2006Date of Patent: September 16, 2014Assignees: National Research Council of Canada, Universite de SherbrookeInventors: Benoit Simard, Christopher Thomas Kingston, Stephane Denommee, Gervais Soucy, German Cota Sanchez
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Patent number: 8834632Abstract: In a method of manufacturing a carbon nanotube, a boat configured to receive substrates is positioned outside of a synthesis space where the carbon nanotube is synthesized. The substrates are loaded into the boat. The boat is then transferred to the synthesis space. A process for forming the carbon nanotube is performed on the substrates in the synthesis space to form the carbon nanotube. Thus, the carbon nanotube may be effectively manufactured.Type: GrantFiled: November 30, 2007Date of Patent: September 16, 2014Assignee: Korea Kumho Petrochemical Co., LtdInventors: Ho-Soo Hwang, Sung-Soo Kim, Jung-Keun Cho
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Patent number: 8828349Abstract: A substrate for growing carbon nanotubes capable of elongating single-walled carbon nanotubes of an average diameter of less than 2 nm is provided. The substrate for growing carbon nanotubes 1 is equipped with a reaction prevention layer 3 formed on a base material 2, a catalyst material layer 4 formed on the reaction prevention layer 3, a dispersion layer 5 formed on the catalyst material layer 4, and a dispersion promotion layer 6 formed on the dispersion layer 5.Type: GrantFiled: March 7, 2012Date of Patent: September 9, 2014Assignees: Honda Motor Co., Ltd., Waseda UniversityInventors: Toshiyuki Ohashi, Toshio Tokune, Masahiro Ota, Hidefumi Nikawa, Hiroshi Kawarada, Takumi Ochiai
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Publication number: 20140241974Abstract: This carbon nanofiber is produced by a vapor phase reaction of a carbon oxide-containing raw material gas using a friend oxide powder including a Co oxide as a catalyst, wherein at least one type selected from metal cobalt, carbon-containing cobalt metals, and cobalt-carbon compounds is contained (encapsulated) in the fiber in a wrapped state. This method for producing a carbon nanofiber includes: producing a carbon nanofiber by, a vapor phase reaction of a carbon oxide-containing raw material gas using a mixed powder of a Co oxide and a Mg oxide as a catalyst, wherein a mixed powder of CoO and MgO, which is obtained by hydrogen-reducing a mixed powder of Co3O4 and MgO using a reduction gas having a hydrogen concentration in which metal cobalt is not generated, is used as the catalyst.Type: ApplicationFiled: September 28, 2012Publication date: August 28, 2014Inventors: Masahiro Hagiwara, Hiroyuki Imai
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Publication number: 20140227481Abstract: Provided is a structure for forming carbon nanofiber, including a base material containing an oxygen ion-conductive oxide, and a metal catalyst that is provided on one surface side of the base material.Type: ApplicationFiled: March 13, 2014Publication date: August 14, 2014Applicant: FUJIKURA LTD.Inventor: Masayasu INAGUMA
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Publication number: 20140219908Abstract: Methods and systems for producing coiled nanotubes. At least one exemplary method of producing coiled carbon nanotubes of the present disclosure comprises the steps of reacting a carbon feedstock and a catalyst within a reaction vessel to produce a reaction product comprising at least about 5% coiled carbon nanotubes, wherein the carbon feedstock comprises either (i) a mixture of a hydrocarbon and water or (ii) an alcohol, and wherein the catalyst comprises at least one Group VIB or VIIIB transition metal.Type: ApplicationFiled: August 30, 2011Publication date: August 7, 2014Inventor: Troy Tomasik
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Publication number: 20140212353Abstract: Apparatus to produce carbon nanotubes (CNTs) of arbitrary length using a chemical vapor deposition (CVD) process reactor furnace is described, where the CNTs are grown axially along a portion of the length of the furnace. The apparatus includes a spindle and a mechanism for rotating the spindle. The spindle located within a constant temperature region of the furnace and operable to collect the CNT around the rotating spindle as the CNT is grown within the furnace.Type: ApplicationFiled: March 19, 2014Publication date: July 31, 2014Applicant: THE BOEING COMPANYInventors: Keith Daniel Humfeld, Venkatacha Parameswaran
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Publication number: 20140199855Abstract: A method for making a carbon nanotube film includes the steps of: (a) adding a plurality of carbon nanotubes to a solvent to create a carbon nanotube floccule structure in the solvent; (b) separating the carbon nanotube floccule structure from the solvent; and (c) shaping the separated carbon nanotube floccule structure to obtain the carbon nanotube film.Type: ApplicationFiled: December 20, 2007Publication date: July 17, 2014Applicants: HON HAI Precision Industry CO., LTD., Tsinghua UniversityInventors: Ding Wang, Chang-Hong Liu, Shou-Shan Fan
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Publication number: 20140199230Abstract: Carbon nanotubes are grown by supplying raw material gas 30 comprising a carbon compound to be a raw material of the carbon nanotubes into the inside of a reaction vessel tube 14 in which a catalyst 26 to grow the carbon nanotubes is charged. At this time, halogen-containing material gas 32 to reduce the amount of a carbon product such as amorphous carbon produced besides carbon nanotubes that deposits on the surface of catalyst particles 44 due to supply of the raw material gas 30 is further supplied into the inside of the reaction vessel tube 14. Thereby, it is possible to produce elongated carbon nanotubes.Type: ApplicationFiled: May 10, 2012Publication date: July 17, 2014Inventors: Yoku Inoue, Adrian Ghemes, Haibo Zhao
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Patent number: 8778478Abstract: Provided is an assembly including a block co-polymer film and a plurality of nano-rods; where the plurality of nano-rods are oriented at the surface of the block co-polymer film, substantially perpendicular to at least one interface between block co-polymer domains. Further provided are methods of assembly formation and devices including such assemblies.Type: GrantFiled: February 4, 2010Date of Patent: July 15, 2014Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem, Ltd.Inventors: Roy Shenhar, Uri Banin, Elina Ploshnik, Asaf Salant
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Patent number: 8778296Abstract: A dispersible carbon nanotube (“CNT”) comprising a CNT backbone and an organic moiety attached to the carbon nanotube backbone and comprising a hydroxyl substituted C6 to C14 aromatic group are described, as well as a CNT-polymer composite and a method of manufacturing the CNT-polymer composite.Type: GrantFiled: October 13, 2009Date of Patent: July 15, 2014Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Jong-jin Park, Tae-gwan Park, Yu-han Lee, Kwang-hee Lee
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Publication number: 20140193323Abstract: The present invention relates to a method for manufacturing carbon nanotubes comprising: a preparatory step of a supported catalyst; a temperature-raising step of inserting the supported catalyst into a reactor, injecting hydrocarbon gas and hydrogen gas at the same time, and raising the temperature of the reactor to between 900 to 1000° C. to synthesize carbon nanotubes; and a temperature-lowering step of lowering the temperature of the reactor to between a room temperature to 200° C., injecting only hydrogen gas, and synthesizing carbon nanotubes. The carbon nanotubes manufactured by the above method have high purity, and excellent selectivity for double wall carbon nanotubes can be achieved.Type: ApplicationFiled: November 2, 2012Publication date: July 10, 2014Inventors: Kyoung Tae Youm, Byeong Yeol Kim, Young Sil Lee, Bo Kyung Lim
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Publication number: 20140191166Abstract: A method for forming a vapor-grown graphite fibers (VGGF) composition and a VGGF composition formed by the method are provided. In this method, a transition metal compound catalyst and three organic co-catalysts are mixed with a hydrocarbon compound, and then are delivered into a tubular reactor and pyrolized and graphitized to produce the VGGF composition. The VGGF composition includes a carbon ingredient containing a carbon content of at least 99.9 wt %. The carbon ingredient has a graphitization degree of at least 75%, and the carbon ingredient includes non-fibrous carbon and fibrous VGGF, wherein an area ratio of the non-fibrous carbon to the fibrous VGGF is about equal to or smaller than 5%. The fibrous VGGF include graphite fibers having a 3-D linkage structure, wherein the content of the graphite fibers having the 3-D linkage structure in the fibrous VGGF is about between 5 area % and 50 area %.Type: ApplicationFiled: March 12, 2014Publication date: July 10, 2014Applicant: YONGYU APPLIED TECHNOLOGY MATERIAL CO., LTDInventors: Chun-Shan WANG, Teng-Hui WANG
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Patent number: 8771405Abstract: A gas filter comprises a housing (30) having a gas inlet (55), a gas outlet (65) and at least one chamber (70) therebetween containing carbon nanotubes (110). The chamber (70) has a port (90) and is configured for simultaneous gas ingress to and gas egress from the carbon nanotubes (110) through the port (90).Type: GrantFiled: March 29, 2011Date of Patent: July 8, 2014Inventor: Dimitris Drikakis
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Patent number: 8771629Abstract: Included are a nano-carbon material production unit for producing a nano-carbon material using a fluidized catalyst formed by granulating a carrier supporting an active component, an acid treatment unit for dissolving and separating a catalyst by an acid solution by feeding a catalyst-containing nano-carbon material into the acid solution, and a pH adjustment unit, which is an anti-agglomeration treatment unit, provided on a downstream side of the acid treatment unit, for performing an anti-agglomeration treatment to prevent agglomeration among nano-carbons due to repulsion caused by dissociation among oxygen-containing functional groups added to the nano-carbon material.Type: GrantFiled: May 28, 2009Date of Patent: July 8, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kiyoshi Tatsuhara, Tomoaki Sugiyama, Atsushi Tanaka, Toshihiko Setoguchi
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Patent number: 8771628Abstract: Certain applicator liquids and method of making the applicator liquids are described. The applicator liquids can be used to form nanotube films or fabrics of controlled properties. An applicator liquid for preparation of a nanotube film or fabric includes a controlled concentration of nanotubes dispersed in a liquid medium containing water. The controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity.Type: GrantFiled: November 4, 2009Date of Patent: July 8, 2014Assignee: Nantero Inc.Inventors: Ramesh Sivarajan, Thomas Rueckes, Rahul Sen, Brent M. Segal, Eliodor G. Ghenciu, Jonathan W. Ward, Tzong-Ru T. Han
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Patent number: 8771822Abstract: Methods for growing a three-dimensional nanorod network in three-dimensional growth spaces, including highly confined spaces, are provided. The methods are derived from atomic layer deposition (ALD) processes, but use higher temperatures and extended pulsing and/or purging times. Through these methods, networks of nanorods can be grown uniformly along the entire inner surfaces of confined growth spaces.Type: GrantFiled: January 18, 2011Date of Patent: July 8, 2014Assignee: Wisconsin Alumni Research FoundationInventors: Xudong Wang, Jian Shi
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Publication number: 20140186256Abstract: A reactor includes a reactor chamber and a carbon nanotube catalyst composite layer. The reactor chamber has an inlet and an outlet. The carbon nanotube catalyst composite layer is suspended in the reactor chamber, wherein the carbon nanotube catalyst composite layer defines a number of apertures, gases in the reactor chamber penetrate the carbon nanotube catalyst composite layer through the plurality of apertures.Type: ApplicationFiled: April 25, 2013Publication date: July 3, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: YANG WU, PENG LIU, YANG WEI, JIA-PING WANG, KAI-LI JIANG, SHOU-SHAN FAN
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Patent number: 8758716Abstract: An atmosphere of a carbon source comprising an oxygenic compound is brought into contact with a catalyst with heating to yield single-walled carbon nanotubes. The carbon source comprising an oxygenic compound preferably is an alcohol and/or ether. The catalyst preferably is a metal. The heating temperature is preferably 500 to 1,500° C. The single-walled carbon nanotubes thus obtained contain no foreign substances and have satisfactory quality with few defects.Type: GrantFiled: February 17, 2012Date of Patent: June 24, 2014Assignees: Toudai Tlo, Ltd., Toray Industries, IncInventors: Shigeo Maruyama, Masahito Yoshikawa