Method for the synthesis of porous carbon materials
    1.
    发明授权
    Method for the synthesis of porous carbon materials 有权
    多孔碳材料合成方法

    公开(公告)号:US08648009B2

    公开(公告)日:2014-02-11

    申请号:US11740425

    申请日:2007-04-26

    CPC分类号: C01B32/336 C01B32/05

    摘要: Nanoporous and mesoporous carbon materials are fabricated in a pyrolysis process in which a starting mixture including a carbonizing polymer and a pyrolyzing polymer are employed. In one instance, the carbonizing polymer and pyrolyzing polymer are joined together in the form of a block copolymer. In another instance, the carbonizing polymer is a polyfurfuryl alcohol and the pyrolyzing polymer is polyethylene glycol diacid. These two polymer materials are mixed together and not copolymerized. The pore structure of the material may be controlled by controlling the molecular weight of various of the polymer components.

    摘要翻译: 在热解过程中制造纳米孔和介孔碳材料,其中采用包含碳化聚合物和热解聚合物的起始混合物。 在一种情况下,碳化聚合物和热解聚合物以嵌段共聚物的形式连接在一起。 在另一种情况下,碳化聚合物是聚糠醇,热解聚合物是聚乙二醇二酸。 将这两种聚合物材料混合在一起而不共聚。 可以通过控制各种聚合物组分的分子量来控制材料的孔结构。

    CMS/SiO.sub.2 /Al.sub.2 O.sub.3 catalysts for improved selectivity in
the synthesis of amines from methanol and/or dimethyl ether and ammonia
    3.
    发明授权
    CMS/SiO.sub.2 /Al.sub.2 O.sub.3 catalysts for improved selectivity in the synthesis of amines from methanol and/or dimethyl ether and ammonia 失效
    CMS / SiO2 / Al2O3催化剂,用于提高从甲醇和/或二甲醚和氨合成胺的选择性

    公开(公告)号:US5354893A

    公开(公告)日:1994-10-11

    申请号:US100463

    申请日:1993-07-30

    IPC分类号: C07C209/16

    CPC分类号: C07C209/16

    摘要: The present invention relates to an improved catalyst for the selective synthesis of monomethylamine (MMA) and dimethylamine (DMA) at the expense of trimethylamine (TMA) for a starting feed of methanol and/or dimethyl ether and ammonia. The current industrial catalyst for this process is a standard SiO.sub.2 /Al.sub.2 O.sub.3 material. The present invention combines this standard catalyst with microporous carbon molecular sieves (CMS) to form a composite material (i.e., a CMS/SiO.sub.2 /Al.sub.2 O.sub.3 material) with higher selectivity for the desired products MMA and DMA. The invention also relates to methods of making the improved catalyst and a process of using the improved catalyst material in the production of MMA and DMA.

    摘要翻译: 本发明涉及用于甲醇和/或二甲醚和氨的起始原料以三甲胺(TMA)为代价选择性合成一甲胺(MMA)和二甲胺(DMA)的改进的催化剂。 目前用于该工艺的工业催化剂是标准的SiO 2 / Al 2 O 3材料。 本发明将该标准催化剂与微孔碳分子筛(CMS)组合以形成对所需产物MMA和DMA具有较高选择性的复合材料(即,CMS / SiO 2 / Al 2 O 3材料)。 本发明还涉及制备改进的催化剂的方法以及在制备MMA和DMA中使用改进的催化剂材料的方法。

    Supported mesoporous carbon ultrafiltration membrane and process for making the same
    6.
    发明授权
    Supported mesoporous carbon ultrafiltration membrane and process for making the same 失效
    支持介孔碳超滤膜及其制作方法

    公开(公告)号:US06719147B2

    公开(公告)日:2004-04-13

    申请号:US09844567

    申请日:2001-04-27

    IPC分类号: B01D2900

    摘要: A novel supported mesoporous carbon ultrafiltration membrane and process for producing the same. The membranes comprise a mesoporous carbon layer that exists both within and external to the porous support. A liquid polymer precursor composition comprising both carbonizing and noncarbonizing templating polymers is deposited on the porous metal support. The coated support is then heated in an inert-gas atmosphere to pyrolyze the polymeric precursor and form a mesoporous carbon layer on and within the support. The pore-size of the membranes is dependent on the molecular weight of the noncarbonizing templating polymer precursor. The mesoporous carbon layer is stable and can withstand high temperatures and exposure to organic chemicals. Additionally, the porous metal support provides excellent strength properties. The composite structure of the membrane provides novel structural properties and allows for increased operating pressures allowing for greater membrane flow rates. The invention also relates to the use of the novel ultrafiltration membrane to separate macromolecules from solution. An example is shown separating bovine serum albumin from water. The membrane functions by separating and by selective adsorption. Because of the membrane's porous metal support, it is well suited to industrial applications. The unique properties of the supported mesoporous carbon membrane also allow the membrane to be used in transient pressure or temperature swing separations processes. Such processes were not previously possible with existing mesoporous membranes. The present invention, however, possesses the requisite physical properties to perform such novel ultrafiltration processes.

    摘要翻译: 一种新型支撑介孔碳超滤膜及其制备方法。 膜包括存在于多孔载体内部和外部的介孔碳层。 包含碳化和非碳酸化模板聚合物的液体聚合物前体组合物沉积在多孔金属载体上。 然后将涂覆的载体在惰性气体气氛中加热以热解聚合物前体并在载体上和内部形成介孔碳层。 膜的孔径取决于非碳酸化模板聚合物前体的分子量。 中孔碳层稳定,可承受高温和暴露于有机化学物质。 此外,多孔金属载体提供优异的强度性能。 膜的复合结构提供了新颖的结构特性并且允许增加的操作压力允许更大的膜流速。本发明还涉及新型超滤膜将溶液中的大分子分离的用途。 示出了将牛血清白蛋白与水分离的实例。 膜通过分离和选择性吸附而起作用。 由于膜的多孔金属支撑,它非常适合于工业应用。支撑介孔碳膜的独特性能也允许膜用于瞬态压力或温度摆动分离过程。 这种方法以前不可能用现有的介孔膜。 然而,本发明具有进行这种新型超滤方法所需的物理性能。

    Plasma-induced, in-situ generation, transport and use or collection of
reactive precursors
    10.
    发明授权
    Plasma-induced, in-situ generation, transport and use or collection of reactive precursors 失效
    血浆诱导的,原位产生,运输和使用或收集活性前体

    公开(公告)号:US5085885A

    公开(公告)日:1992-02-04

    申请号:US579772

    申请日:1990-09-10

    摘要: A beam or flow of a reactive or metastable precursor such as a hydride or organometallic compound is created, and this beam or flow is used to treat (e.g. dope or coat or otherwise modify) a substrate, e.g. an advanced material such as a semiconductor layer, a photovoltaic cell, or a solar cell. The beam or flow can also be directed into a storage zone so that the precursor or precursors can be collected for future use. The beam or flow is created in an apparatus comprising at least three zones. Zone 1 is irradiated with microwave energy to generate a reactive gas rich in free radicals (e.g. rich in H.sup.., CH.sub.3.sup.., etc.) zone 2 (downstream from zone 1) is substantially free of microwave energy and contains a target which is impinged upon by the free radicals and becomes a source of the precursor; zone 3 (downstream from zone 2) is where the precursors are either collected for storage or are used to treat the substrate. In a typical apparatus of this invention, a feed gas such as H.sub.2 or CH.sub.4 is introduced into an elongated tube 50 which communicates with a microwave cavity 57 containing a microwave plasma. A reactive gas containing free radicals (and perhaps some ions) flows from cavity (57 to target 61, where the free radicals react with the target to form the precursor (e.g. a hydride such as silane). When the precursor enters zone 3 it can treat an advanced material 73, e.g. by decomposing into Si+2H.sub.2. The Si is deposited on substrate 73 and the liberated H.sub.2 is pumped away. The pumping system also keeps the interior of the apparatus under subatmospheric pressure, e.g. 0.1 to 10 torr.

    摘要翻译: 产生反应性或亚稳态前体(例如氢化物或有机金属化合物)的束或流,并且该束或流被用于处理(例如,掺杂或涂覆或以其他方式修饰)底物,例如, 诸如半导体层,光伏电池或太阳能电池的高级材料。 梁或流动还可以被引导到储存区域中,使得前体或前体可以被收集以备将来使用。 梁或流在包括至少三个区域的装置中产生。 区域1用微波能量照射以产生富含自由基(例如富含H.,CH3等)的区域2(区域1的下游)的反应性气体基本上不含微波能量并且包含撞击的靶 通过自由基,成为前体的来源; 区域3(区域2的下游)是前体被收集用于储存或用于处理底物的地方。 在本发明的典型装置中,将诸如H 2或CH 4的进料气体引入到与包含微波等离子体的微波空腔57连通的细长管50中。 含有自由基(或许一些离子)的活性气体从空腔(57)流向靶61,其中自由基与靶反应形成前体(例如氢化物如硅烷),当前体进入区3时, 处理高级材料73,例如通过分解成Si + 2H2,Si沉积在基板73上,释放的H2被泵出,泵送系统还将设备的内部保持在低于大气压的压力下,例如0.1至10托。