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28 条记录 (耗时 0.022 秒)

    Modification of nanotubes oxidation with peroxygen compounds
    7.
    发明授权
    Modification of nanotubes oxidation with peroxygen compounds 失效
    用过氧化合物改性纳米管氧化

    公开(公告)号：US06872681B2

    公开(公告)日：2005-03-29

    申请号：US09861370

    申请日：2001-05-18

    申请人： Chunming Niu ,  David Moy ,  Jun Ma ,  Asif Chishti

    发明人： Chunming Niu ,  David Moy ,  Jun Ma ,  Asif Chishti

    IPC分类号： B82B3/00 ,  C01B31/02 ,  D01F11/12 ,  H01G9/058 ,  D01F9/12

    CPC分类号： D01F11/122 ,  B82Y30/00 ,  H01G11/36 ,  Y02E60/13 ,  Y10S977/847

    摘要： A method of chemically modifying carbon nanotubes having a diameter less than one micron comprising: contacting the nanotubes with a peroxygen compound selected from the group consisting of organic peroxyacids, inorganic peroxoacids and organic hydroperoxides, or a salt thereof, under oxidation conditions and thereby producing modified carbon nanotubes. Oxidation of the nanotubes increases the degree of dispersion of aggregates of nanotubes and aids in the disassembling of such aggregates. The dispersed nanotubes are used to prepare rigid structures and can be used in electrodes and capacitors.

    摘要翻译： 化学改性直径小于1微米的碳纳米管的方法包括：在氧化条件下使纳米管与选自有机过氧酸，无机过氧酸和有机氢过氧化物或其盐的过氧化合物接触，从而产生改性的 碳纳米管。 纳米管的氧化增加了纳米管聚集体的分散程度，有助于这种聚集体的分解。 分散的纳米管用于制备刚性结构，可用于电极和电容器中。

    Process for producing single wall nanotubes using unsupported metal catalysts and single wall nanotubes produced according to this method
    8.
    发明授权
    Process for producing single wall nanotubes using unsupported metal catalysts and single wall nanotubes produced according to this method 失效
    使用未负载的金属催化剂和根据该方法生产的单壁纳米管制备单壁纳米管的方法

    公开(公告)号：US07074379B2

    公开(公告)日：2006-07-11

    申请号：US09839932

    申请日：2001-04-20

    申请人： David Moy ,  Asif Chishti

    发明人： David Moy ,  Asif Chishti

    IPC分类号： D01F9/12

    CPC分类号： B82Y30/00 ,  B01J3/04 ,  B01J3/042 ,  B01J19/121 ,  B01J19/26 ,  B01J2219/0875 ,  B82Y40/00 ,  C01B32/162 ,  C01B2202/02 ,  D01F9/127 ,  D01F9/1278 ,  Y10S977/742 ,  Y10S977/75 ,  Y10S977/842 ,  Y10S977/843 ,  Y10S977/896

    摘要： 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 el 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.

    摘要翻译： 一种通过一种或多种气态碳化合物的催化分解来制备中空单壁碳纳米管的方法，首先形成一种气相混合物碳原料气体，其包含一种或多种具有1-6个碳原子的气态碳化合物，并且仅H ，O，N，S或el作为任选与氢混合的杂原子，以及在所述分解的反应条件下不稳定的含气相金属的化合物，并且在反应条件下形成用作分解催化剂的含金属催化剂 ; 然后在分解反应条件下进行所述分解反应，从而制备所述纳米管。

    Catalysts for the manufacture of carbon fibrils and methods of use thereof
    9.
    发明授权
    Catalysts for the manufacture of carbon fibrils and methods of use thereof 失效
    用于制造碳原纤维的催化剂及其使用方法

    公开(公告)号：US06699454B1

    公开(公告)日：2004-03-02

    申请号：US08477576

    申请日：1995-06-07

    申请人： David Moy ,  Asif Chishti

    发明人： David Moy ,  Asif Chishti

    IPC分类号： D01F912

    CPC分类号： B82Y30/00 ,  B01J23/76 ,  B01J37/031 ,  D01F9/127

    摘要： A method for the manufacture of a catalyst for the production of carbon fibrils comprising contacting a fibril-forming catalyst or precursors of a fibril-forming catalyst with an effective amount of a surfactant and/or polyol. A catalyst for the production of carbon fibrils formed by contacting a fibril-forming catalyst or precursors of a fibril-forming catalyst with an effective amount of a surfactant and/or polyol. Improved carbon fibrils or carbon fibril aggregates free of a continuous carbon thermal overcoat, with graphitic layers substantially parallel to the fibril axis, having a substantially constant diameter from about 1.0 to about 100 nanometers, and possessing enhanced dispersion into other materials and enhanced electrical conductivity in those materials.

    摘要翻译： 一种制备用于生产碳原纤维的催化剂的方法，包括使原纤维形成催化剂或原纤维形成催化剂的前体与有效量的表面活性剂和/或多元醇接触。一种用于生产形成碳原子的催化剂 通过使原纤维形成催化剂或原纤维形成催化剂的前体与有效量的表面活性剂和/或多元醇接触。改进的碳原纤维或不含连续碳热外涂层的碳原纤聚集体，石墨层基本上平行于原纤维 轴，具有约1.0至约100纳米的基本恒定的直径，并且在这些材料中具有增强的其它材料的分散性和增强的导电性。