EP2297386A2 - Ein hocheffizientes gasphasenverfahren zur modifizierung und funktionalisierung von kohlenstoff-nanofasern mit salpetersäuredampf - Google Patents

Ein hocheffizientes gasphasenverfahren zur modifizierung und funktionalisierung von kohlenstoff-nanofasern mit salpetersäuredampf

Info

Publication number
EP2297386A2
EP2297386A2 EP09772124A EP09772124A EP2297386A2 EP 2297386 A2 EP2297386 A2 EP 2297386A2 EP 09772124 A EP09772124 A EP 09772124A EP 09772124 A EP09772124 A EP 09772124A EP 2297386 A2 EP2297386 A2 EP 2297386A2
Authority
EP
European Patent Office
Prior art keywords
carbon
carbon fibers
nitric acid
range
reactor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09772124A
Other languages
German (de)
English (en)
French (fr)
Inventor
Martin Muhler
Wei Xia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Intellectual Property GmbH
Original Assignee
Bayer MaterialScience AG
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 Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Publication of EP2297386A2 publication Critical patent/EP2297386A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D01F11/00Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/10Chemical after-treatment of artificial filaments or the like during manufacture of carbon
    • D01F11/12Chemical after-treatment of artificial filaments or the like during manufacture of carbon with inorganic substances ; Intercalation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B01J20/205Carbon nanostructures, e.g. nanotubes, nanohorns, nanocones, nanoballs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004Sorbent size or size distribution, e.g. particle size
    • B01J20/28007Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28023Fibres or filaments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057Surface area, e.g. B.E.T specific surface area
    • B01J20/28059Surface area, e.g. B.E.T specific surface area being less than 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
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057Surface area, e.g. B.E.T specific surface area
    • B01J20/28061Surface area, e.g. B.E.T specific surface area being in the range 100-500 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
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18Carbon
    • B01J21/185Carbon nanotubes
    • 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
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/0201Impregnation
    • B01J37/0207Pretreatment of the support
    • 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/043Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/58Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
    • D06M11/64Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
    • D06M11/65Salts of oxyacids of nitrogen
    • 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
    • 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
    • B01J35/615100-500 m2/g
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2933Coated or with bond, impregnation or core

Definitions

  • the present invention relates to a process for the functionalization of carbon fibers with the vapor of nitric acid, so modified carbon fibers and their use.
  • An objective of these treatments may also be the purification, cutting and opening of the carbon nanofibers (Liu, J. et al., 280: 1253-6 (1998)).
  • a simple but highly effective method of functionalizing carbon fibers by treatment with nitric acid vapor is provided, thereby avoiding the problematic separation by filtration.
  • nitric acid vapor a significantly larger amount of oxygen species on the surface can be detected by X-ray photoelectron spectroscopy (XPS).
  • XPS X-ray photoelectron spectroscopy
  • Carbon nanofibers more preferred for the invention are obtained by methods basically described in the following references: The production of carbon nanotubes with diameters smaller than 100 nm is described for the first time in EP 205 556 Bl. For the preparation here light (ie, short- and medium-chain aliphatic or mononuclear or dinuclear aromatic) hydrocarbons and an iron-based catalyst are used, are decomposed at the carbon carrier compounds at a temperature above 800-900 0 C.
  • the carbon fibers may be positioned in the vapor stream with a fixture 12.
  • This holding device may be, for example, a sieve, grid or even rust.
  • FIG. 5 shows the comparison of the TPD cleavage profiles of carbon nanofibers during treatment by means of HNO 3 gas phase, NO 2, NO 2: O 2 (1: 1) and HNO 3 liquid. All treatments were carried out for 3 hours each. The graphics are normalized to 1 g carbon fiber.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Composite Materials (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Fibers (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Catalysts (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP09772124A 2008-07-03 2009-06-27 Ein hocheffizientes gasphasenverfahren zur modifizierung und funktionalisierung von kohlenstoff-nanofasern mit salpetersäuredampf Withdrawn EP2297386A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008031579A DE102008031579A1 (de) 2008-07-03 2008-07-03 Ein hocheffizientes Gasphasenverfahren zur Modifizierung und Funktionalisierung von Kohlenstoff-Nanofasern mit Salpetersäuredampf
PCT/EP2009/004664 WO2010000424A2 (de) 2008-07-03 2009-06-27 Ein hocheffizientes gasphasenverfahren zur modifizierung und funktionalisierung von kohlenstoff-nanofasern mit salpetersäuredampf

Publications (1)

Publication Number Publication Date
EP2297386A2 true EP2297386A2 (de) 2011-03-23

Family

ID=41078222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09772124A Withdrawn EP2297386A2 (de) 2008-07-03 2009-06-27 Ein hocheffizientes gasphasenverfahren zur modifizierung und funktionalisierung von kohlenstoff-nanofasern mit salpetersäuredampf

Country Status (11)

Country Link
US (1) US20110104492A1 (ru)
EP (1) EP2297386A2 (ru)
JP (1) JP2011526331A (ru)
KR (1) KR20110027723A (ru)
CN (1) CN102099515A (ru)
AU (1) AU2009266063A1 (ru)
BR (1) BRPI0915597A2 (ru)
CA (1) CA2729693A1 (ru)
DE (1) DE102008031579A1 (ru)
RU (1) RU2011103676A (ru)
WO (1) WO2010000424A2 (ru)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8333900B1 (en) * 2008-06-27 2012-12-18 E I Du Pont De Nemours And Company Selective etching of single walled carbon nanotubes
CN102153069B (zh) * 2011-02-25 2012-12-19 中国科学院长春应用化学研究所 一种纳米碳材料的处理方法
KR20120105827A (ko) * 2011-03-16 2012-09-26 삼성전자주식회사 정착장치용 발열체, 이를 구비한 정착장치 및 화상형성장치
CN102424379B (zh) * 2011-09-20 2013-11-20 奇瑞汽车股份有限公司 一种高分散性碳纳米管的制备方法
CN102424973A (zh) * 2011-12-26 2012-04-25 昆山全亚冠环保科技有限公司 一种鎳銅合金金相腐蚀剂
CN104018340B (zh) * 2014-06-12 2015-12-09 航天精工股份有限公司 一种连续碳纤维表面改性方法
CN117385630A (zh) * 2014-12-09 2024-01-12 国立大学法人 东京大学 表面处理碳纤维、表面处理碳纤维束及它们的制造方法
CN106215949A (zh) * 2016-08-02 2016-12-14 上海应用技术学院 一种低温选择性催化还原脱硝催化剂及其制备方法
JP6857806B2 (ja) * 2016-12-05 2021-04-14 パナソニックIpマネジメント株式会社 燃料電池用の金属粒子担持触媒およびその製造方法、およびその触媒を用いた燃料電池
CN109847706A (zh) * 2019-02-12 2019-06-07 广州大学 一种表面官能团功能化水热炭吸附剂及其制备方法与应用
CN111139646A (zh) * 2020-01-14 2020-05-12 贵州大学 一种改性碳纤维及其与尼龙6复合材料的制备

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729820A (en) * 1986-05-30 1988-03-08 Amoco Corporation Multielectrolyte shear treatment of carbon fibers
JPH02118121A (ja) * 1988-10-25 1990-05-02 Osaka Gas Co Ltd ピッチ系活性炭素繊維およびその製造方法
JPH06166953A (ja) * 1992-11-25 1994-06-14 Osaka Gas Co Ltd 炭素繊維の表面処理方法および炭素繊維
EP1061042A1 (en) * 1999-06-15 2000-12-20 Iljin Nanotech Co., Ltd. Method for gas phase purification of carbon nanotubes by thermal treatment in diffusion furnace
KR100382878B1 (ko) * 1999-06-15 2003-05-09 일진나노텍 주식회사 고순도 탄소나노튜브의 합성 방법
JP2002177702A (ja) 2000-12-08 2002-06-25 Sony Corp カーボンナノ構造体の一段階精製用の超音波還流システム
DE50209165D1 (de) * 2001-02-21 2007-02-15 Basf Ag Verfahren zur herstellung von d-pantothensäure und/oder salze als zusatz zu tierfuttermitteln
WO2003040446A2 (en) * 2001-06-15 2003-05-15 The Pennsylvania State Research Foundation Method of purifying nanotubes and nanofibers using electromagnetic radiation
JP2005001980A (ja) * 2003-04-23 2005-01-06 Samsung Corning Co Ltd 流動化方式を用いた炭素ナノ構造体の処理方法
US7144949B2 (en) * 2003-12-11 2006-12-05 The Aerospace Corporation Synthetic method for conducting polymer nanofibers
KR100533414B1 (ko) * 2004-05-12 2005-12-02 한국전력공사 활성탄소섬유의 질산 표면처리장치 및 표면처리방법
KR20070084288A (ko) * 2004-10-22 2007-08-24 하이페리온 커탤리시스 인터내셔널 인코포레이티드 탄소 나노튜브의 개선된 오존첨가분해 방법
DE102004054959A1 (de) * 2004-11-13 2006-05-18 Bayer Technology Services Gmbh Katalysator zur Herstellung von Kohlenstoffnanoröhrchen durch Zersetzung von gas-förmigen Kohlenverbindungen an einem heterogenen Katalysator
DE102006007147A1 (de) * 2006-02-16 2007-08-23 Bayer Technology Services Gmbh Verfahren zur kontinuierlichen Herstellung von Katalysatoren
DE102007044031A1 (de) * 2007-09-14 2009-03-19 Bayer Materialscience Ag Kohlenstoffnanoröhrchenpulver, Kohlenstoffnanoröhrchen und Verfahren zu ihrer Herstellung
KR101001385B1 (ko) * 2008-04-23 2010-12-14 한화케미칼 주식회사 탄소나노튜브의 연속적인 표면처리 방법 및 장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010000424A2 *

Also Published As

Publication number Publication date
BRPI0915597A2 (pt) 2019-08-27
DE102008031579A1 (de) 2010-01-07
CN102099515A (zh) 2011-06-15
AU2009266063A1 (en) 2010-01-07
CA2729693A1 (en) 2010-01-07
US20110104492A1 (en) 2011-05-05
KR20110027723A (ko) 2011-03-16
JP2011526331A (ja) 2011-10-06
WO2010000424A2 (de) 2010-01-07
RU2011103676A (ru) 2012-08-10
WO2010000424A3 (de) 2010-12-29

Similar Documents

Publication Publication Date Title
WO2010000424A2 (de) Ein hocheffizientes gasphasenverfahren zur modifizierung und funktionalisierung von kohlenstoff-nanofasern mit salpetersäuredampf
Sun et al. The solvent-free selective hydrogenation of nitrobenzene to aniline: an unexpected catalytic activity of ultrafine Pt nanoparticles deposited on carbon nanotubes
US9126828B2 (en) Mixed structures of single walled and multi walled carbon nanotubes
DE69934127T2 (de) Katalytisches wachstum von einwandigen kohlenstoffnanoröhren aus metallpartikeln
DE60035875T2 (de) Verfahren zur herstellung von kohlenstoffnanoröhren und katalysatoren dafür
US20080031802A1 (en) Ozonolysis of carbon nanotubes
EP1901995A2 (de) Kohlenstoff-nanopartikel, deren herstellung und deren verwendung
EP1987181B1 (de) Katalytisches ätzen von kohlenstofffasern
Hong et al. Effects of oxidative conditions on properties of multi-walled carbon nanotubes in polymer nanocomposites
DE202014011239U1 (de) Kohlenstoffnanoröhrchen mit großer spezifischer Oberfläche
EP2228343A1 (en) Water vapour assisted ozonolysis of carbon nanotubes
WO2015007670A1 (de) Verfahren zur herstellung eines effizienten katalysators für die produktion mehrwandiger kohlenstoffnanoröhrchen, mehrwandiges kohlenstoffnanoröhrchen und kohlenstoffnanoröhrchenpulver
EP3003972A1 (de) Verfahren zur herstellung mehrwandiger kohlenstoffnanoröhrchen, mehrwandiges kohlenstoffnanoröhrchen und kohlenstoffnanoröhrchenpulver
US7481990B2 (en) Methods for osmylating and ruthenylating single-walled carbon nanotubes
Rosario-Castro et al. Combined electron microscopy and spectroscopy characterization of as-received, acid purified, and oxidized HiPCO single-wall carbon nanotubes
EP3473751A1 (en) Method for producing carbon nanotube fiber and carbon nanotube fiber produced thereby
Shlyakhova et al. Catalytic synthesis of carbon nanotubes using Ni-and Co-doped calcium tartrates
Tripisciano et al. Cisplatin functionalized single‐walled carbon nanotubes

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

17P Request for examination filed

Effective date: 20110629

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BAYER INTELLECTUAL PROPERTY GMBH

17Q First examination report despatched

Effective date: 20130730

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20131010