Patents Assigned to Hyperion Catalysis International
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Publication number: 20080036123Abstract: Methods of preparing conductive thermoset precursors containing carbon nanotubes is provided. Also provided is a method of preparing conductive thermosets containing carbon nanotubes. The carbon nanotubes may in individual form or in the form of aggregates having a macromorpology resembling the shape of a cotton candy, bird nest, combed yarn or open net. Preferred multiwalled carbon nanotubes have diameters no greater than 1 micron and preferred single walled carbon nanotubes have diameters less than 5 nm. Carbon nanotubes may be adequately dispersed in a thermoset precursor by using a extrusion process generally reserved for thermoplastics. The thermoset precursor may be a precursor for epoxy, phenolic, polyimide, urethane, polyester, vinyl ester or silicone. A preferred thermoset precursor is a bisphenol A derivative.Type: ApplicationFiled: August 20, 2007Publication date: February 14, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Alan Fischer, Timothy Jozokos, James Leacock, Andrew Rich
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Publication number: 20080031802Abstract: Methods of treating single walled and multiwalled carbon nanotubes with ozone are provided. The carbon nanotubes are treated by contacting the carbon nanotubes with ozone at a temperature range between 0° C. and 100° C. to yield functionalized nanotubes which are greater in weight than the untreated carbon nanotubes. The carbon nanotubes treated according to methods of the invention can be used to prepare complex structures such as three dimensional networks or rigid porous structures which can be utilized to form electrodes for fabrication of improved electrochemical capacitors. Useful catalyst supports are prepared by contacting carbon nanotube structures such as carbon nanotube aggregates, three dimensional networks or rigid porous structures with ozone in the temperature range between 0° C. and 100° C.Type: ApplicationFiled: October 21, 2005Publication date: February 7, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Asif Chishti, Lein Ngaw, Alan Fischer, Robert Braden
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Publication number: 20070290393Abstract: This invention relates to rigid porous carbon structures and to methods of making same. The rigid porous structures have a high surface area which are substantially free of micropores. Methods for improving the rigidity of the carbon structures include causing the nanofibers to form bonds or become glued with other nanofibers at the fiber intersections. The bonding can be induced by chemical modification of the surface of the nanofibers to promote bonding, by adding “gluing” agents and/or by pyrolyzing the nanofibers to cause fusion or bonding at the interconnect points.Type: ApplicationFiled: July 22, 2005Publication date: December 20, 2007Applicant: HYPERION CATALYSIS INTERNATIONAL, INC.Inventors: Howard Tennent, David Moy, Chun-Ming Niu
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Publication number: 20070280874Abstract: A method of oxidizing the surface of carbon microfibers that includes contacting the microfibers with an oxidizing agent that includes sulfuric acid and potassiaum chlorate under reaction conditions sufficient to oxidize the surface. The invention also features a method of decreasing the length of carbon microfibers that includes contacting the microfibers with an oxidizing agent under reaction conditions sufficient to decrease the length.Type: ApplicationFiled: August 26, 2005Publication date: December 6, 2007Applicant: Hyperion Catalysis International, Inc.Inventors: Robert Bening, Thomas McCarthy
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Publication number: 20070280875Abstract: A method of treating carbon fibrils and carbon fibril structures such as assemblages, aggregates and hard porous structures with a plasma to effect an alteration of the surface or structure of the carbon fibril or fibrils. The method can be utilized to functionalize, prepare for functionalization or otherwise modify the fibril surface via a “dry” chemical process.Type: ApplicationFiled: August 20, 2007Publication date: December 6, 2007Applicant: Hyperion Catalysis International, Inc.Inventors: Alan Fischer, Robert Hoch
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Publication number: 20070238826Abstract: Methods of preparing conductive thermoset precursors containing carbon nanotubes is provided. Also provided is a method of preparing conductive thermosets containing carbon nanotubes. The carbon nanotubes may in individual form or in the form of aggregates having a macromorpology resembling the shape of a cotton candy, bird nest, combed yarn or open net. Preferred multiwalled carbon nanotubes have diameters no greater than 1 micron and preferred single walled carbon nanotubes have diameters less than 5 nm. Carbon nanotubes may be adequately dispersed in a thermoset precursor by using a extrusion process generally reserved for thermoplastics. The thermoset precursor may be a precursor for epoxy, phenolic, polyimide, urethane, polyester, vinyl ester or silicone. A preferred thermoset precursor is a bisphenol A derivative.Type: ApplicationFiled: August 31, 2005Publication date: October 11, 2007Applicant: Hyperion Catalysis International, Inc.Inventors: Alan Fischer, Timothy Jozokos, James Leacock, Andrew Rich
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Publication number: 20070202033Abstract: Compositions including carbide-containing nanorods and/or oxycarbide-containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including oxycarbide-containing nanorods and/or carbide containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.Type: ApplicationFiled: May 2, 2007Publication date: August 30, 2007Applicant: Hyperion Catalysis International, Inc.Inventors: David Moy, Chunming Niu, Jun Ma, Jason Willey
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Publication number: 20070179050Abstract: Methods for forming compositions including carbide-containing nanorods and/or oxycarbide-containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides. Rigid porous structures including oxycarbide-containing nanorods and/or carbide containing nanorods and/or carbon nanotubes bearing modified carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.Type: ApplicationFiled: December 8, 2006Publication date: August 2, 2007Applicant: HYPERION CATALYSIS INTERNATIONAL, INC.Inventors: Jun Ma, David Moy
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Publication number: 20070170414Abstract: The present invention relates to a field emission device comprising an anode and a cathode, wherein said cathode includes carbon nanotubes nanotubes which have been subjected to energy, plasma, chemical, or mechanical treatment. The present invention also relates to a field emission cathode comprising carbon nanotubes which have been subject to such treatment. A method for treating the carbon nanotubes and for creating a field emission cathode is also disclosed. A field emission display device containing carbon nanotube which have been subject to such treatment is further disclosed.Type: ApplicationFiled: March 30, 2007Publication date: July 26, 2007Applicant: Hyperion Catalysis International, Inc.Inventors: Mikio Takai, Alan Fischer, Chunming Niu, Howard Tennent, Robert Hoch, Hans Biebuyck
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Patent number: 7230149Abstract: Compositions including carbide-containing nanorods and/or oxycarbide-containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including oxycarbide-containing nanorods and/or carbide containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.Type: GrantFiled: September 14, 2004Date of Patent: June 12, 2007Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Chunming Niu, Jun Ma, Jason M. Willey
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Patent number: 7198772Abstract: An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and an aluminum and/or magnesium compound, optionally in the presence of carbon particles or carbon fibril aggregates. The catalyst may also be made by incorporating a compound of a fibril-forming metal onto magnesia particles in carbon particles or carbon fibril aggregates. The catalysts, methods of using them to form carbon fibrils and those carbon fibrils are also disclosed.Type: GrantFiled: February 11, 2004Date of Patent: April 3, 2007Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Asif Chishti
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Patent number: 7169730Abstract: Compositions including modified carbide-containing nanorods and/or modified oxycarbide-containing nanorods and/or modified carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including modified oxycarbide-containing nanorods and/or modified carbide containing nanorods and/or modified carbon nanotubes bearing modified carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.Type: GrantFiled: June 22, 2004Date of Patent: January 30, 2007Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, David Moy
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Publication number: 20070003473Abstract: A graphite fibril material comprised primarily of an aggregate of an average particle diameter of 0.1 to 100 ?m in which-fibrils are intertwined, the fibrils being graphite fibrils of a fiber diameter of 0.0035 to 0.075 ?m and spacing of the carbon hexagonal net plane as determined by the X-ray diffraction method of 3.36 to 3.53 angstroms. It is of high crystallinity and purity and is of superior conductivity, chemical stability, solvent absorption capacity and reinforcing capacity.Type: ApplicationFiled: August 31, 2006Publication date: January 4, 2007Applicant: Hyperion Catalysis International, Inc.Inventors: Hiroharu Ikeda, Paul Nahass, Robert Hausslein
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Patent number: 7144564Abstract: A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, N, S or Cl as hetero atoms, optionally admixed with hydrogen, and a gas phase metal containing compound which is unstable under reaction conditions for said decomposition, and which forms a metal containing catalyst which acts as a decomposition catalyst under reaction conditions; and then conducting said decomposition reaction under decomposition reaction conditions, thereby producing said nanotubes.Type: GrantFiled: September 6, 2005Date of Patent: December 5, 2006Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Asif Chishti
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Publication number: 20060249711Abstract: A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes.Type: ApplicationFiled: October 26, 2005Publication date: November 9, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw
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Publication number: 20060239893Abstract: Methods of preparing single walled carbon nanotubes are provided. Carbon containing gas is contacted with a supported metal catalyst under reaction conditions to yield at least 90% single walled carbon nanotubes and at least 1 gram single walled carbon nanotubes/gram metal catalyst. The support material may be calcined at temperatures between 150 and 600° C., and may have at least one oxidized planar surface. Reaction conditions include less than 10 atmospheres pressure and less than 800° C.Type: ApplicationFiled: November 16, 2005Publication date: October 26, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: Xinjie Zhang, Jun Ma, Howard Tennent, Robert Hoch
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Publication number: 20060239897Abstract: A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, N, S or Cl as hetero atoms, optionally admixed with hydrogen, and a gas phase metal containing compound which is unstable under reaction conditions for said decomposition, and which forms a metal containing catalyst which acts as a decomposition catalyst under reaction conditions; and then conducting said decomposition reaction under decomposition reaction conditions, thereby producing said nanotubes.Type: ApplicationFiled: September 6, 2005Publication date: October 26, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: David Moy, Asif Chishti
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Publication number: 20060239891Abstract: Methods of oxidizing multiwalled carbon nanotubes are provided. The multiwalled carbon nanotubes are oxidized by contacting the carbon nanotubes with gas-phase oxidizing agents such as CO2, O2, steam, N2O, NO, NO2, O3, and ClO2. Near critical and supercritical water can also be used as oxidizing agents. The multiwalled carbon nanotubes oxidized according to methods of the invention can be used to prepare rigid porous structures which can be utilized to form electrodes for fabrication of improved electrochemical capacitors.Type: ApplicationFiled: November 9, 2005Publication date: October 26, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, David Moy, Asif Chishti, Robert Hoch
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Publication number: 20060208229Abstract: An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5-20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.Type: ApplicationFiled: January 18, 2006Publication date: September 21, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw, Alan Fischer, Robert Hoch
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Publication number: 20060193868Abstract: Graphitic nanotubes, which includes tubular fullerenes (commonly called “buckytubes”) and fibrils, which are functionalized by chemical substitution or by adsorption of functional moieties. More specifically the invention relates to graphitic nanotubes which are uniformly or non-uniformly substituted with chemical moieties or upon which certain cyclic compounds are adsorbed and to complex structures comprised of such functionalized fibrils linked to one another. The invention also relates to methods of introducing functional groups onto the surface of such fibrils.Type: ApplicationFiled: April 26, 2006Publication date: August 31, 2006Applicant: HYPERION CATALYSIS INTERNATIONAL, INC.Inventors: Alan Fisher, Robert Hoch, David Moy, Chunming Niu, Naoya Ogata, Howard Tennent