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    MULTI-STEP PURIFICATION OF SINGLE-WALL CARBON NANOTUBES
    1.
    发明申请
    MULTI-STEP PURIFICATION OF SINGLE-WALL CARBON NANOTUBES 有权
    单壁碳纳米管的多步纯化

    公开(公告)号：US20100008843A1

    公开(公告)日：2010-01-14

    申请号：US11291638

    申请日：2005-11-30

    申请人： Robert H. Hauge ,  Ya-Qiong Xu ,  Haiqing Peng ,  Richard E. Smalley ,  Irene Morin Marek

    发明人： Robert H. Hauge ,  Ya-Qiong Xu ,  Haiqing Peng ,  Richard E. Smalley ,  Irene Morin Marek

    IPC分类号： D01F9/12 ,  B82B3/00

    CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B32/17 ,  C01B2202/02 ,  C01B2202/36 ,  Y10S977/845

    摘要： The present invention relates to processes for the purification of single-wall carbon nanotubes (SWNTs). Known methods of single-wall carbon nanotube production result in a single-wall carbon nanotube product that contains single-wall carbon nanotubes in addition to impurities including residual metal catalyst particles and amounts of small amorphous carbon sheets that surround the catalyst particles and appear on the side of the single-wall carbon nanotubes. The present purification processes remove the extraneous carbon as well as metal-containing residual catalyst particles.

    摘要翻译： 本发明涉及单壁碳纳米管（SWNT）的纯化方法。 单壁碳纳米管生产的已知方法导致单壁碳纳米管产物，除了包含残留金属催化剂颗粒的杂质和围绕催化剂颗粒的小的无定形碳片的含量之外，还包含单壁碳纳米管，并出现在 侧壁的单壁碳纳米管。 本纯化方法除去了外来的碳以及含金属的残留催化剂颗粒。

    Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst
    4.
    发明授权
    Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst 失效
    使用相转移催化剂的基于长度的液 - 液萃取碳纳米管

    公开(公告)号：US07578941B2

    公开(公告)日：2009-08-25

    申请号：US11289000

    申请日：2005-11-29

    申请人： Kirk J. Ziegler ,  Daniel J. Schmidt ,  Robert H. Hauge ,  Richard E. Smalley ,  Irene Morin Marek, legal representative

    发明人： Kirk J. Ziegler ,  Daniel J. Schmidt ,  Robert H. Hauge ,  Richard E. Smalley

    IPC分类号： B01D11/02

    CPC分类号： B82Y30/00 ,  B82Y10/00 ,  B82Y40/00 ,  C01B32/172 ,  C01B32/174 ,  C01B2202/02 ,  C01B2202/28 ,  Y10S977/75 ,  Y10S977/845 ,  Y10S977/847

    摘要： The present invention is generally directed to new liquid-liquid extraction methods for the length-based separation of carbon nanotubes (CNTs) and other 1-dimensional nanostructures. In some embodiments, such methods are directed to separating SWNTs on the basis of their length, wherein such methods comprise the steps of: (a) functionalizing SWNTs to form functionalized SWNTs with ionizable functional moieties; (b) dissolving said functionalized SWNTs in a polar solvent to form a polar phase; (c) dissolving a substoichiometric (relative to the amount of ionizable functional moieties present on the SWNTs) amount of a phase transfer agent in a non-polar solvent to form a non-polar phase; (d) combining the polar and non-polar phases to form a bi-phase mixture; (e) adding a cationic donor species to the bi-phase mixture; and (f) agitating the bi-phase mixture to effect the preferential transport of short SWNTs into the non-polar phase such that the non-polar phase is enriched in short SWNTs and the polar phase is enriched in longer SWNTs. In other embodiments, analogous methods are used for the length-based separation of any type of CNT, and more generally, for any type of 1-dimensional nanostructure.

    摘要翻译： 本发明一般涉及用于碳纳米管（CNT）和其它一维纳米结构的基于长度的分离的新的液 - 液萃取方法。 在一些实施方案中，这样的方法涉及基于其长度分离SWNT，其中此类方法包括以下步骤：（a）使SWNT官能化形成具有可离子化功能部分的官能化SWNT; （b）将所述官能化的单壁碳纳米管溶解在极性溶剂中以形成极性相; （c）在非极性溶剂中将相转移剂的亚化学计量（相对于存在于SWNT上的可离子化官能团的量）量溶解以形成非极性相; （d）组合极性和非极性相以形成双相混合物; （e）向双相混合物中加入阳离子供体物质; 和（f）搅拌双相混合物以实现短的单壁碳纳米管优先转运到非极性相中，使得非极性相富集在短的单壁碳纳米管中，极性相富集较长的单壁碳纳米管。 在其它实施方案中，类似的方法用于任何类型的CNT的长度分离，更通常地，对于任何类型的一维纳米结构。