WO2005016853A2 - Improved catalyst and process to produce nanocarbon materials in high yield and at high selectivity at reduced reaction temperatures - Google Patents

Improved catalyst and process to produce nanocarbon materials in high yield and at high selectivity at reduced reaction temperatures Download PDF

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Publication number
WO2005016853A2
WO2005016853A2 PCT/US2004/012136 US2004012136W WO2005016853A2 WO 2005016853 A2 WO2005016853 A2 WO 2005016853A2 US 2004012136 W US2004012136 W US 2004012136W WO 2005016853 A2 WO2005016853 A2 WO 2005016853A2
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WO
WIPO (PCT)
Prior art keywords
catalyst
carbon
iron
nickel
morphology
Prior art date
Application number
PCT/US2004/012136
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English (en)
French (fr)
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WO2005016853A3 (en
Inventor
Bhabendra Pradhan
Original Assignee
Columbian Chemicals Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Columbian Chemicals Company filed Critical Columbian Chemicals Company
Priority to EP04750358A priority Critical patent/EP1654406A4/en
Priority to JP2006521812A priority patent/JP2007500121A/ja
Priority to BRPI0413069-3A priority patent/BRPI0413069A/pt
Publication of WO2005016853A2 publication Critical patent/WO2005016853A2/en
Publication of WO2005016853A3 publication Critical patent/WO2005016853A3/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/15Nano-sized carbon materials
    • C01B32/158Carbon nanotubes
    • C01B32/16Preparation
    • C01B32/162Preparation characterised by catalysts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74Iron group metals
    • B01J23/745Iron
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74Iron group metals
    • B01J23/755Nickel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/40Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/61310-100 m2/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0072Preparation of particles, e.g. dispersion of droplets in an oil bath
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/082Decomposition and pyrolysis
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/127Carbon filaments; Apparatus specially adapted for the manufacture thereof by thermal decomposition of hydrocarbon gases or vapours or other carbon-containing compounds in the form of gas or vapour, e.g. carbon monoxide, alcohols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures

Definitions

  • the present invention relates to the production of Nanocarbon materials. , More particularly, the present invention relates to an improved catalyst and process to produce
  • Nanocarbon materials in high yield and high selectivity and at reduced reaction temperatures are gaining importance for various commercial applications. Such applications include their use to store molecular hydrogen, to serve as catalyst supports, as reinforcing components of polymeric composites, for use in electromagnetic shielding and for use in various types of batteries and other energy storage devices.
  • Carbon nano-structure materials are generally prepared from the decomposition of carbon containing gases over selected catalytic metal surfaces at temperatures ranging from about 500°C to about 1200°C.
  • carbon nanofibers can be used in lithium ion batteries, wherein the anode would be comprised of graphitic nanofibers.
  • the graphite sheets are substantially perpendicular or parallel to the longitudinal axis of the carbon nanofiber.
  • the exposed surfaces of the nanofibers are comprised of at least 95% edge regions in contrast to conventional graphites that are comprised almost entirely of basal plane regions and very little edge sites.
  • Other references include “Catalytic Growth of Carbon Filaments,” which is an article from the Chemical Engineering Department of Auburn University dated 1989, wherein it discusses the formation of filamentous carbon.
  • Another source of information is an article entitled “A Review of Catalytic Grown Carbon Nanofibers,” published by the Material Research Society, in 1993. In that article, carbon nanofibers are discussed as being produced in a relatively large scale through a catalytic decomposition of certain hydrocarbons on small metal particles. In all cases, as was discussed above, synthesizing a pure carbon nanomaterial is challenging.
  • a carbon nanofiber system is synthesized with very high purity (above 95 percent), high crystallinity. selectivity of the carbon morphology, and exceptionally high yield.
  • a custom made catalyst with an average single crystal-particle size of ⁇ 10 nm and a high surface area (>50 m 2 /g), provides a higher morphological selectivity and higher reactivity than heretofore attainable. The reactivity of these catalyst particles is maintained even after 24 hours reaction such that yield exceeds 200g carbon per gram of catalyst.
  • the catalysts which are key to the products and yield achieved are prepared to specific parameters (size distribution, composition and crystallinity)specified and via a flame synthesis process as taught in US Patent No.
  • Figure 1 is a graph of the Effect of Time on Growth of the carbon nanofiber in the presence of the Iron oxide catalyst over a 24 hour period
  • Figure 2 is a graph of the Effect of Time on Growth of the carbon nanofiber in the presence of an Iron.Nickel catalyst over a 24 hour period
  • Figure 3 illustrates the specific morphology of the carbon microstructure of the carbon nanofiber produced in the presence of the Iron oxide catalyst as described in relation to Figure 1
  • Figure 4 is a high resolution view of the specific morphology of the carbon microstructure of the carbon nanofiber produced in the presence of the Iron oxide catalyst as described in relation to Figure 1.
  • Figure 5 illustrates the specific morphology of the carbon microstructure of the carbon nanofiber produced in the presence of the Iron:Nickel catalyst as described in relation to Figure 2
  • Figure 6 is a high resolution view of the specific morphology of the carbon microstructure of the carbon nanofiber produced in the presence of the Iron:Nickel catalyst as described in relation to Figure 2
  • Figure 7 is a graph of the production of nanocarbon fibers having platelet morphology prepared with Iron oxide catalyst compared with a conventional catalyst
  • Figure 8 is a graph of the production of nanocarbon fibers having tubular morphology prepared with Iron:Nickel catalyst compared with a conventional catalyst.
  • reaction gas CO/H or C 2 H 4 /H 2
  • reaction gas CO/H or C 2 H 4 /H 2
  • the reaction gas (CO/H 2 or C 2 H 4 /H 2 ) was introduced into the reactor for different periods of time (1, 2, 4, 6, 8 and 24 hours).
  • the Iron oxide catalyst utilized with CO:H 2 ::4::l at 550°C produces a specific morphology of the carbon micro structure where the graphite planes are perpendicular to the carbon growth axis as seen in Figures 3 and 4.
  • this trial shows a better carbon yield (2 to 3 times higher) and at 50°C lower synthesis temperature (550°C versus 600°C).
  • Morphological selectivity is 100 percent.
  • an Iron:Nickel catalyst was used, with C 2 H 2 :H 2 ::1:4 at 550°C to produce a specific morphology of the carbon microstructure, that is where the graphite planes are parallel and/or at an angle to the carbon growth axis, as seen in Figures 5 and 6.
  • this trial shows a better carbon yield(2 to 3 times higher) and at 100°C lower synthesis temperature (550°C versus 650°C). A greater than 99.2 percent purity of the carbon product can be reached in this system. Morphological selectivity is greater than 95 percent.
  • the catalyst can be a metal oxide catalyst selected from the metals including iron, nickel, cobalt, lanthanum, gold, silver, molybdenum, iron-nickel, iron-copper and their alloys, c.
  • Fluid Bed Process Option A known amount of oxide catalyst (0.1-1.2g) was placed in a ebullated fluid-bed reactor with A1 2 0 3 (14.9-13.8 g). The reactor was flushed for 30 minutes with nitrogen gas with a flow rate of 1 OOOsccm. The reactor was heated up to 450°C with a heating rate of 5°C per minute under 10-20% H 2 (balanced withN 2 ).
  • FIG. 1 shows the graph of the effect of time on growth of carbon nanofibers utilizing an iron oxide catalyst with CO:H 2 : :4: 1 at 550°C.
  • the carbon nanofibers produced comprise the carbon platelet morphology as seen in Figures 3 and 4.
  • Plot 10 tracks g carbon g catalyst.
  • Plot 20 tracks metal content (weight percent).
  • both the Iron catalyst and the Iron:Nickel catalyst respectively produced a carbon nanomaterial platelet or tubular morphology at lower temperature greater than 95 percent morphological selectivity, higher yield and lower impurity of metal than the commercial or conventional catalysts.
  • Plot 50 tracks g carbon/g MCT catalyst at 550°C.
  • Plot 60 tracks metal content (weight percent).
  • Plot 70 tracks g carbon/g JT Baker catalyst at 600°C.
  • Plot 80 tracks metal content (weight percent).
  • Plot 90 tracks g carbon/g MCT catalyst at 550°C.
  • Plot 100 tracks metal content (weight percent).
  • Plot 110 tracks g carbon/g CCC catalyst at 600°C.
  • Plot 120 tracks metal content (weight percent).
  • the "CCC Produced Conventional" catalyst was prepared utilizing a liquid precipitation process. Iron, nickel, and copper metal nitrates were utilized. The metal nitrates were stoichimetrically mixed in H2O and rapidly stirred at room temperature. Ammonium bicarbonate is added to a pH of approximately 9, and stirred approximately 5 minutes. A precipitate forms overnight; the precipitate is washed and dried. Metal carbonate is dried at 110°C for 24 hours and then calcinated in air for 4 hours at 400°C. Metal oxides are ball milled for 6 hours and reduced in 10% H 2 in N 2 at 500°C for 20 hours in 200 seem flow. Metal powder is passivated in 2% O 2 in N 2 at room temperature for 1 hour. This technique and the reaction taking place, as shown below, are referenced in R. J. Best and W.W. Russel, J. Am. Chem. Soc. 76, 8383 (1954).
  • Powder catalyst Synthesis by Flame/Plasma process A mixture of nitrate/sulfate salt of metal (Fe, Ni and Cu) ethanolic solution were prepared and vaporized/atomized into either flame or plasma torch and powder of pure oxide or mixed metal oxide were obtained by this process using the method described in US patent 6,123,653.
  • the process for producing nanocarbon materials is undertaken by providing a catalyst with an average particle size of ⁇ 10 nm and a surface area greater than 50 m 2 /g, although this may vary.
  • carbonaceous reactants are reacted in the presence of the catalyst over a given period of time to produce carbon nanofibers with over 99 percent purity and a morphological selectivity approaching 100 percent with higher reactivity.
  • the catalyst produced by the method described in US Patent No. 6,123,653, is a metal oxide catalyst selected from the metals including iron, nickel, cobalt, lanthanum, gold, silver, molybdenum, iron-nickel, iron-copper and their alloys. There may be other suitable metal oxides which may be found as experimentation continues.
  • the catalyst itself, is prepared to specific parameters (size distribution, composition and crystallinity)specified and via a flame synthesis process; and it possesses a single crystal morphology.
  • the resulting yield of carbon nanomaterial is ⁇ 140g carbon per g catalyst, but it may be more, while the morphology of the carbon micro structure comprises graphite planes of controllable orientation (depending on catalyst composition and carbonaceous feedstock) perpendicular or parallel to the carbon growth axis resulting in the 99.6 percent purity of the carbon product.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Composite Materials (AREA)
  • Catalysts (AREA)
  • Carbon And Carbon Compounds (AREA)
PCT/US2004/012136 2003-07-28 2004-04-20 Improved catalyst and process to produce nanocarbon materials in high yield and at high selectivity at reduced reaction temperatures WO2005016853A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04750358A EP1654406A4 (en) 2003-07-28 2004-04-20 IMPROVED CATALYST AND PROCESS FOR PRODUCING NANOCARBON MATERIALS AT HIGH YIELD AND SELECTIVITY AT REDUCED REACTION TEMPERATURES
JP2006521812A JP2007500121A (ja) 2003-07-28 2004-04-20 低下した反応温度において、高収量で高選択性でナノカーボン材料を製造するための改良型の触媒および方法
BRPI0413069-3A BRPI0413069A (pt) 2003-07-28 2004-04-20 processo e catalisador aperfeiçoados para produzir materiais de nanocarbono com alta seletividade e reduzidas temperaturas de reação

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/628,842 US20050025695A1 (en) 2003-07-28 2003-07-28 Catalyst and process to produce nanocarbon materials in high yield and at high selectivity at reduced reaction temperatures
US10/628,842 2003-07-28

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WO2005016853A2 true WO2005016853A2 (en) 2005-02-24
WO2005016853A3 WO2005016853A3 (en) 2005-09-29

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US (1) US20050025695A1 (ja)
EP (1) EP1654406A4 (ja)
JP (1) JP2007500121A (ja)
KR (1) KR20060052923A (ja)
CN (1) CN1833055A (ja)
AR (1) AR044387A1 (ja)
BR (1) BRPI0413069A (ja)
TW (1) TW200505788A (ja)
WO (1) WO2005016853A2 (ja)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5620059B2 (ja) * 2005-06-08 2014-11-05 トヨタ モーター エンジニアリング アンド マニュファクチャリング ノース アメリカ,インコーポレイティド 金属酸化物ナノ粒子及びその製造方法
KR101443222B1 (ko) * 2007-09-18 2014-09-19 삼성전자주식회사 그라펜 패턴 및 그의 형성방법
JP5658739B2 (ja) 2009-04-17 2015-01-28 シーアストーン リミテッド ライアビリティ カンパニー 炭素酸化物を還元することによる固体炭素の製造方法
KR101900758B1 (ko) * 2011-11-29 2018-09-20 한화에어로스페이스 주식회사 그래핀 합성용 금속 박막 및 이를 이용한 그래핀 제조 방법
NO2749379T3 (ja) 2012-04-16 2018-07-28
MX354526B (es) 2012-04-16 2018-03-07 Seerstone Llc Metodos y sistemas para capturar y secuestrar carbono y para reducir la masa de oxidos de carbono en una corriente de gas de desechos.
EP2838844A4 (en) 2012-04-16 2015-10-28 Seerstone Llc METHOD FOR TREATING A GAS CLEARANCE CONTAINING CARBON OXIDES
CN104302575B (zh) 2012-04-16 2017-03-22 赛尔斯通股份有限公司 通过还原二氧化碳来产生固体碳的方法
JP6328611B2 (ja) 2012-04-16 2018-05-23 シーアストーン リミテッド ライアビリティ カンパニー 非鉄触媒で炭素酸化物を還元するための方法および構造
US9896341B2 (en) 2012-04-23 2018-02-20 Seerstone Llc Methods of forming carbon nanotubes having a bimodal size distribution
US10815124B2 (en) 2012-07-12 2020-10-27 Seerstone Llc Solid carbon products comprising carbon nanotubes and methods of forming same
JP6284934B2 (ja) 2012-07-12 2018-02-28 シーアストーン リミテッド ライアビリティ カンパニー カーボンナノチューブを含む固体炭素生成物およびそれを形成する方法
US9598286B2 (en) 2012-07-13 2017-03-21 Seerstone Llc Methods and systems for forming ammonia and solid carbon products
US9779845B2 (en) 2012-07-18 2017-10-03 Seerstone Llc Primary voltaic sources including nanofiber Schottky barrier arrays and methods of forming same
CN104718170A (zh) 2012-09-04 2015-06-17 Ocv智识资本有限责任公司 碳强化的增强纤维在含水或非水介质内的分散
WO2014085378A1 (en) 2012-11-29 2014-06-05 Seerstone Llc Reactors and methods for producing solid carbon materials
EP3129321B1 (en) 2013-03-15 2021-09-29 Seerstone LLC Electrodes comprising nanostructured carbon
US10086349B2 (en) 2013-03-15 2018-10-02 Seerstone Llc Reactors, systems, and methods for forming solid products
EP3129133A4 (en) 2013-03-15 2018-01-10 Seerstone LLC Systems for producing solid carbon by reducing carbon oxides
WO2014151144A1 (en) 2013-03-15 2014-09-25 Seerstone Llc Carbon oxide reduction with intermetallic and carbide catalysts
US9783416B2 (en) 2013-03-15 2017-10-10 Seerstone Llc Methods of producing hydrogen and solid carbon
US20160130519A1 (en) * 2014-11-06 2016-05-12 Baker Hughes Incorporated Methods for preparing anti-friction coatings
US11752459B2 (en) 2016-07-28 2023-09-12 Seerstone Llc Solid carbon products comprising compressed carbon nanotubes in a container and methods of forming same

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US54849A (en) * 1866-05-22 Improvement in trunk-locks
US4881994A (en) * 1987-04-30 1989-11-21 United Technologies Corporation Iron oxide catalyst propellant, and method for making same
US5458784A (en) * 1990-10-23 1995-10-17 Catalytic Materials Limited Removal of contaminants from aqueous and gaseous streams using graphic filaments
US5618875A (en) * 1990-10-23 1997-04-08 Catalytic Materials Limited High performance carbon filament structures
DE69636627T2 (de) * 1995-08-04 2007-08-30 Ngimat Co. Chemischen gasphasenabscheidung und pulverbildung mittels einer thermischen spritzmethode aus beinahe superkitischen und superkritischen flussigkeitlösungen
US6221330B1 (en) * 1997-08-04 2001-04-24 Hyperion Catalysis International Inc. Process for producing single wall nanotubes using unsupported metal catalysts
EP1137593B1 (en) * 1998-11-03 2008-08-13 William Marsh Rice University Gas-phase nucleation and growth of single-wall carbon nanotubes from high pressure carbon monoxide
US6159538A (en) * 1999-06-15 2000-12-12 Rodriguez; Nelly M. Method for introducing hydrogen into layered nanostructures
US6485858B1 (en) * 1999-08-23 2002-11-26 Catalytic Materials Graphite nanofiber catalyst systems for use in fuel cell electrodes
US6537515B1 (en) * 2000-09-08 2003-03-25 Catalytic Materials Llc Crystalline graphite nanofibers and a process for producing same
US20020054849A1 (en) * 2000-09-08 2002-05-09 Baker R. Terry K. Crystalline graphite nanofibers and a process for producing same
AU2001294876A1 (en) * 2000-09-29 2002-04-08 President And Fellows Of Harvard College Direct growth of nanotubes, and their use in nanotweezers
US6503660B2 (en) * 2000-12-06 2003-01-07 R. Terry K. Baker Lithium ion battery containing an anode comprised of graphitic carbon nanofibers
US6752977B2 (en) * 2001-02-12 2004-06-22 William Marsh Rice University Process for purifying single-wall carbon nanotubes and compositions thereof
WO2002095097A1 (en) * 2001-05-21 2002-11-28 Trustees Of Boston College, The Varied morphology carbon nanotubes and methods for their manufacture
US6596187B2 (en) * 2001-08-29 2003-07-22 Motorola, Inc. Method of forming a nano-supported sponge catalyst on a substrate for nanotube growth
US6849245B2 (en) * 2001-12-11 2005-02-01 Catalytic Materials Llc Catalysts for producing narrow carbon nanostructures
US7378075B2 (en) * 2002-03-25 2008-05-27 Mitsubishi Gas Chemical Company, Inc. Aligned carbon nanotube films and a process for producing them
US20040005269A1 (en) * 2002-06-06 2004-01-08 Houjin Huang Method for selectively producing carbon nanostructures
WO2004046030A1 (en) * 2002-11-15 2004-06-03 Mgill University Method for producing carbon nanotubes using a dc non-transferred thermal plasma torch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of EP1654406A4 *

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AR044387A1 (es) 2005-09-07
CN1833055A (zh) 2006-09-13
BRPI0413069A (pt) 2006-10-17
KR20060052923A (ko) 2006-05-19
WO2005016853A3 (en) 2005-09-29
EP1654406A2 (en) 2006-05-10
JP2007500121A (ja) 2007-01-11
US20050025695A1 (en) 2005-02-03
TW200505788A (en) 2005-02-16
EP1654406A4 (en) 2007-08-22

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