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19 条记录 (耗时 0.031 秒)

    Process utilizing pre-formed cluster catalysts for making single-wall carbon nanotubes
    2.
    发明授权
    Process utilizing pre-formed cluster catalysts for making single-wall carbon nanotubes 有权
    使用预先形成的簇催化剂制备单壁碳纳米管的方法

    公开(公告)号：US06913789B2

    公开(公告)日：2005-07-05

    申请号：US10059570

    申请日：2002-01-29

    申请人： Richard E. Smalley ,  Robert H. Hauge ,  Peter Athol Willis ,  W. Carter Kittrell

    发明人： Richard E. Smalley ,  Robert H. Hauge ,  Peter Athol Willis ,  W. Carter Kittrell

    IPC分类号： B01J3/00 ,  B01J19/26 ,  C01B31/02 ,  D01F9/127 ,  C23C16/26

    CPC分类号： B82Y30/00 ,  B01J3/008 ,  B01J19/26 ,  B01J2219/00085 ,  B01J2219/00094 ,  B01J2219/00108 ,  B01J2219/00121 ,  B82Y40/00 ,  C01B32/162 ,  C01B2202/02 ,  D01F9/127 ,  Y02P20/544 ,  Y10S977/843

    摘要： A gas-phase method for producing high yields of single-wall carbon nanotubes with high purity and homogeneity is disclosed. The method involves using preformed metal catalyst clusters to initiate and grow single-wall carbon nanotubes. In one embodiment, multi-metallic catalyst precursors are used to facilitate the metal catalyst cluster formation. The catalyst clusters are grown to the desired size before mixing with a carbon-containing feedstock at a temperature and pressure sufficient to initiate and form single-wall carbon nanotubes. The method also involves using small fullerenes and preformed sections of single-wall carbon nanotubes, either derivatized or underivatized, as seed molecules for expediting the growth and increasing the yield of single-wall carbon nanotubes. The multi-metallic catalyst precursors and the seed molecules may be introduced into the reactor by means of a supercritical fluid. In addition the seed molecules may be introduced into the reactor via an aerosol or smoke.

    摘要翻译： 公开了一种用于产生高纯度和均匀性的高产率单壁碳纳米管的气相方法。 该方法涉及使用预制金属催化剂簇来引发和生长单壁碳纳米管。 在一个实施方案中，多金属催化剂前体用于促进金属催化剂簇形成。 在与含碳原料混合之前，在足以引发和形成单壁碳纳米管的温度和压力下将催化剂簇生长至所需尺寸。 该方法还涉及使用衍生化或未衍生化的单壁碳纳米管的小富勒烯和预制部分作为种子分子，用于加速生长并提高单壁碳纳米管的产率。 可以通过超临界流体将多金属催化剂前体和种子分子引入反应器。 此外，可以通过气溶胶或烟雾将种子分子引入反应器。

    Method for separating single-wall carbon nanotubes and compositions thereof
    5.
    发明授权
    Method for separating single-wall carbon nanotubes and compositions thereof 失效
    分离单壁碳纳米管的方法及其组合物

    公开(公告)号：US07074310B2

    公开(公告)日：2006-07-11

    申请号：US10379273

    申请日：2003-03-04

    申请人： Richard E. Smalley ,  Robert H. Hauge ,  W. Carter Kittrell ,  Ramesh Sivarajan ,  Michael S. Strano ,  Sergei M. Bachilo ,  R. Bruce Weisman

    发明人： Richard E. Smalley ,  Robert H. Hauge ,  W. Carter Kittrell ,  Ramesh Sivarajan ,  Michael S. Strano ,  Sergei M. Bachilo ,  R. Bruce Weisman

    IPC分类号： G01N27/447 ,  B03C5/00 ,  B01D15/08

    CPC分类号： G01N21/6428 ,  B82Y15/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/172 ,  C01B2202/02 ,  C01B2202/22 ,  G01N21/6489 ,  G01N21/65 ,  G01N33/574 ,  G01N33/588 ,  G01N2021/6417 ,  G01N2021/7786

    摘要： The invention relates to a process for sorting and separating a mixture of (n, m) type single-wall carbon nanotubes according to (n, m) type. A mixture of (n, m) type single-wall carbon nanotubes is suspended such that the single-wall carbon nanotubes are individually dispersed. The nanotube suspension can be done in a surfactant-water solution and the surfactant surrounding the nanotubes keeps the nanotube isolated and from aggregating with other nanotubes. The nanotube suspension is acidified to protonate a fraction of the nanotubes. An electric field is applied and the protonated nanotubes migrate in the electric fields at different rates dependent on their (n, m) type. Fractions of nanotubes are collected at different fractionation times. The process of protonation, applying an electric field, and fractionation is repeated at increasingly higher pH to separated the (n, m) nanotube mixture into individual (n, m) nanotube fractions. The separation enables new electronic devices requiring selected (n, m) nanotube types.

    摘要翻译： 本发明涉及一种根据（n，m）型分选（n，m）型单壁碳纳米管的混合物的方法。 （n，m）型单壁碳纳米管的混合物被悬浮，使得单壁碳纳米管分散分散。 纳米管悬浮液可以在表面活性剂 - 水溶液中进行，并且包围纳米管的表面活性剂保持纳米管分离并与其他纳米管聚集。 将纳米管悬浮液酸化以质子化纳米管的一部分。 施加电场，并且质子化的纳米管在电场中以取决于它们的（n，m）类型的不同速率迁移。 在不同的分馏时间收集纳米管的级分。 在越来越高的pH下重复质子化，施加电场和分级的过程，以将（n，m）纳米管混合物分离成单个（n，m）纳米管部分。 该分离使需要所选（n，m）纳米管类型的新电子器件成为可能。

    Carbon nanotube substrates and catalyzed hot stamp for polishing and patterning the substrates
    9.
    发明申请
    Carbon nanotube substrates and catalyzed hot stamp for polishing and patterning the substrates 失效
    碳纳米管基底和用于抛光和图案化基底的催化热印

    公开(公告)号：US20080105648A1

    公开(公告)日：2008-05-08

    申请号：US11300031

    申请日：2005-12-14

    申请人： Yuhuang Wang ,  Robert H. Hauge ,  Howard K. Schmidt ,  Myung Jong Kim ,  W. Carter Kittrell

    发明人： Yuhuang Wang ,  Robert H. Hauge ,  Howard K. Schmidt ,  Myung Jong Kim ,  W. Carter Kittrell

    IPC分类号： H01B13/00 ,  C03C25/68

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/168 ,  C01B2202/02 ,  Y10S977/745

    摘要： The present invention is generally directed to catalyzed hot stamp methods for polishing and/or patterning carbon nanotube-containing substrates. In some embodiments, the substrate, as a carbon nanotube fiber end, is brought into contact with a hot stamp (typically at 200-800° C.), and is kept in contact with the hot stamp until the morphology/patterns on the hot stamp have been transferred to the substrate. In some embodiments, the hot stamp is made of material comprising one or more transition metals (Fe, Ni, Co, Pt, Ag, Au, etc.), which can catalyze the etching reaction of carbon with H2, CO2, H2O, and/or O2. Such methods can (1) polish the carbon nanotube-containing substrate with a microscopically smooth finish, and/or (2) transfer pre-defined patterns from the hot stamp to the substrate. Such polished or patterned carbon nanotube substrates can find application as carbon nanotube electrodes, field emitters, and field emitter arrays for displays and electron sources.

    摘要翻译： 本发明一般涉及用于研磨和/或构图含碳纳米管的基底的催化热印方法。 在一些实施方案中，作为碳纳米管纤维端的基底与热印模（通常在200-800℃）接触，并且与热印模保持接触，直到热的形态/图案 印章已经转移到基材上。 在一些实施例中，热压印由包含一种或多种过渡金属（Fe，Ni，Co，Pt，Ag，Au等）的材料制成，其可以催化碳与H 2的蚀刻反应， CO 2，H 2 O和/或O 2。 这样的方法可以（1）用微观平滑光洁度抛光含碳纳米管的基材，和/或（2）将预定义的图案从热印刷转印到基材上。 这种抛光或图案化的碳纳米管基底可以用作碳纳米管电极，场致发射体和用于显示器和电子源的场发射极阵列。