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    • 2. 发明公开
    • CHIRAL OR ACHIRAL, MESOPOROUS CARBON
    • HALBPORÖSERCHIRALER ODER ACHIRALER KOHLENSTOFF
    • EP2707327A4
    • 2014-12-03
    • EP12782474
    • 2012-05-10
    • FPINNOVATIONS INC
    • MACLACHLAN MARK JOHNSHOPSOWITZ KEVIN ERICHAMAD WADOOD YASSER
    • C01B31/00C01B31/02C04B35/524C09K19/00C09K19/02C09K19/38
    • C01B31/02C01B32/05C01P2006/12C04B35/532C04B38/0022C04B2235/3418C04B2235/48C09K19/02C09K19/3819C04B35/52C04B38/0054C04B38/04
    • A composition and a method for producing mesoporous carbon materials with a chiral or achiral organization. In the method, a polymerizable inorganic monomer is reacted in the presence of nanocrystalline cellulose to give a material of inorganic solid with cellulose nanocrystallites organized in a chiral nematic organization. The cellulose can be carbonized through thermal treatment under inert atmosphere (e.g., nitrogen or argon) and the silica may subsequently be removed using aqueous solutions of sodium hydroxide (NaOH) or hydrogen fluoride (HF) to give the stable mesoporous carbon materials that retain the chiral nematic structure of the cellulose. These materials may be obtained as free-standing films with very high surface area. Through control of the reaction conditions the pore-size distribution may be varied from predominantly microporous to predominantly mesoporous materials. These are the first materials to use cellulose as both the structural template and carbon source for a mesoporous carbon material. These are also the first carbon materials to combine mesoporosity with long-range chiral ordering. Possible applications for these materials include: charge storage devices (e.g. supercapacitors and anodes for Li-ion batteries), adsorbents, gas purifiers, light-weight nanocomposite materials, catalyst supports (e.g., for chiral transformations), gas storage, and as a hard-template to generate other materials, preferably with chiral structures.
    • 一种用手性或非手性组织制备介孔碳材料的组合物和方法。 在该方法中,可聚合无机单体在纳米晶体纤维素的存在下反应,得到以手性向列组织组织的纤维素纳米微晶的无机固体材料。 纤维素可以通过在惰性气氛(如氮气或氩气)下进行热处理来碳化,随后可以使用氢氧化钠(NaOH)或氟化氢(HF)的水溶液除去二氧化硅,得到稳定的介孔碳材料, 纤维素的手性向列结构。 这些材料可以作为具有非常高的表面积的自立膜获得。 通过控制反应条件,孔径分布可以从主要是微孔到主要介孔的材料变化。 这些是使用纤维素作为介孔碳材料的结构模板和碳源的第一种材料。 这些也是将中孔结合与长距离手性排序相结合的第一种碳材料。 这些材料的可能应用包括:电荷存储设备(例如锂离子电池的超级电容器和阳极),吸附剂,气体净化器,轻质纳米复合材料,催化剂载体(例如用于手性转化),储气和作为硬 以生成其他材料,优选用手性结构。