利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

96 条记录 (耗时 0.025 秒)

    Method of preparing carbon nanocages
    3.
    发明授权
    Method of preparing carbon nanocages 失效
    碳纳米线的制备方法

    公开(公告)号：US07518045B2

    公开(公告)日：2009-04-14

    申请号：US11140979

    申请日：2005-06-01

    申请人： Chan-ho Pak ,  Hyuk Chang ,  Jian Nong Wang

    发明人： Chan-ho Pak ,  Hyuk Chang ,  Jian Nong Wang

    IPC分类号： C01B31/04

    CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B32/18 ,  Y10S977/843

    摘要： The present invention provides a simple method of mass producing high purity carbon nanocages. The method of preparing carbon nanocages comprises introducing an inert gas into a reactor equipped with a spray nozzle and raising the temperature of the reactor to a pyrolysis temperature of a catalyst compound. The method further comprises spraying a reactant including the catalyst compound and a carbon-containing compound into the reactor through the spray nozzle, wherein the ratio of a space velocity of the inert gas to a space velocity of the reactant is 100 or more.

    摘要翻译： 本发明提供了大规模生产高纯碳纳米笼的简单方法。 制备碳纳米笼的方法包括将惰性气体引入装有喷嘴的反应器中，并将反应器的温度升高至催化剂化合物的热解温度。 该方法还包括通过喷嘴将包含催化剂化合物和含碳化合物的反应物喷射到反应器中，其中惰性气体的空速与反应物的空速之比为100以上。

    Mesoporous carbon, method of preparing the same, and fuel cell using the carbon
    5.
    发明授权
    Mesoporous carbon, method of preparing the same, and fuel cell using the carbon 有权
    介孔碳，其制备方法和使用碳的燃料电池

    公开(公告)号：US07854913B2

    公开(公告)日：2010-12-21

    申请号：US11443160

    申请日：2006-05-31

    申请人： Sang-hoon Joo ,  Chan-ho Pak ,  Hyuk Chang ,  Ji-man Kim ,  Hyung-ik Lee

    发明人： Sang-hoon Joo ,  Chan-ho Pak ,  Hyuk Chang ,  Ji-man Kim ,  Hyung-ik Lee

    IPC分类号： B01J19/08 ,  H01M8/00

    CPC分类号： H01M4/926 ,  B82Y30/00 ,  C01B32/00

    摘要： A mesoporous carbon is prepared by mixing a carbon precursor, an acid, and a solvent to obtain a carbon precursor mixture; impregnating an ordered mesoporous silica (OMS) with the carbon precursor mixture; carbonizing the impregnated OMS at 800 to 1300° C. by irradiating microwave energy with a power of 100 to 2000 W thereon to form an OMS-carbon composite; and removing the mesoporous silica from the OMS-carbon composite. The method of preparing a mesoporous carbon can significantly reduce a carbonization time by carbonizing a carbon precursor using microwave energy in a silica template compared to a conventional method using a heat treatment. A supported catalyst and a fuel cell include the mesoporous carbon.

    摘要翻译： 通过混合碳前体，酸和溶剂来制备介孔碳以获得碳前体混合物; 用碳前体混合物浸渍有序介孔二氧化硅（OMS）; 通过在其上照射100至2000W的功率的微波能量来在800至1300℃下将浸渍的OMS碳化，以形成OMS-碳复合材料; 并从OMS-碳复合材料中除去介孔二氧化硅。 制备介孔碳的方法与使用热处理的常规方法相比，通过使用微波能量在二氧化硅模板中碳化碳前体可显着降低碳化时间。 载体催化剂和燃料电池包括介孔碳。

    Supported catalyst, method of preparing the same, and fuel cell using the same
    6.
    发明申请
    Supported catalyst, method of preparing the same, and fuel cell using the same 有权
    负载催化剂，其制备方法和使用其的燃料电池

    公开(公告)号：US20070270305A1

    公开(公告)日：2007-11-22

    申请号：US11708600

    申请日：2007-02-21

    申请人： Chan-ho Pak ,  Dae-jong Yoo ,  Sang-hoon Joo ,  Hyuk Chang ,  Seol-ah Lee

    发明人： Chan-ho Pak ,  Dae-jong Yoo ,  Sang-hoon Joo ,  Hyuk Chang ,  Seol-ah Lee

    IPC分类号： B01J31/00

    CPC分类号： H01M4/926 ,  H01M4/8657 ,  H01M4/8814 ,  H01M4/885 ,  H01M4/92 ,  H01M4/921 ,  H01M8/1007 ,  H01M8/1011 ,  Y02E60/523 ,  Y02P70/56

    摘要： A method of preparing a supported catalyst, the method comprising mixing a first catalytic metal precursor and a first solvent to obtain a first catalytic metal precursor mixture; mixing a carbon support for catalyst and the first catalytic metal precursor mixture, and drying the mixture to obtain a primary supported catalyst precursor; subjecting the primary supported catalyst precursor to a hydrogen reduction heat treatment, to obtain a primary supported catalyst; mixing the primary supported catalyst and a polyhydric alcohol to obtain a primary supported catalyst mixture; mixing a second catalytic metal precursor and a second solvent to obtain a second catalytic metal precursor mixture; mixing the primary supported catalyst mixture and the second catalytic metal precursor mixture to obtain a secondary supported catalyst precursor mixture; and adjusting the pH of the secondary supported catalyst precursor mixture, and then heating the secondary supported catalyst precursor mixture to obtain a supported catalyst, a supported catalyst prepared by the method, an electrode comprising the supported catalyst, and a fuel cell including the electrode are provided. A supported catalyst having a desired amount of loaded catalytic metal particles can be obtained by preparing a primary supported catalyst containing catalytic metal particles that are obtained by a primary gas phase reduction reaction of a portion of the final loading amount of catalytic metal, and reducing the remaining portion of the catalytic metal by a secondary liquid phase reduction reaction. The supported catalyst contains catalytic metal particles having a very small average particle size, which are uniformly distributed on a carbon support at a high concentration, and thus exhibits maximal catalyst activity. A fuel cell produced using the supported catalyst has improved efficiency.

    摘要翻译： 一种制备负载型催化剂的方法，所述方法包括混合第一催化金属前体和第一溶剂以获得第一催化金属前体混合物; 混合催化剂用碳载体和第一催化金属前体混合物，干燥混合物得到主要负载型催化剂前体; 对初级负载催化剂前体进行氢还原热处理，得到主要负载型催化剂; 将主要负载型催化剂和多元醇混合，得到主要负载型催化剂混合物; 混合第二催化金属前体和第二溶剂以获得第二催化金属前体混合物; 将主要负载的催化剂混合物和第二催化金属前体混合物混合，得到二次负载催化剂前体混合物; 调节二次负载型催化剂前体混合物的pH，然后加热二次负载型催化剂前体混合物，得到负载型催化剂，通过该方法制备的负载催化剂，包含负载型催化剂的电极和包含该电极的燃料电池 提供。 具有所需量的负载的催化金属颗粒的负载型催化剂可以通过制备含有催化金属颗粒的主负载催化剂获得，所述催化金属颗粒是通过催化金属的最终负载量的一部分一次气相还原反应获得的， 催化金属的剩余部分通过二次液相还原反应。 载体催化剂含有平均粒径非常小的催化金属颗粒，其以高浓度均匀分布在碳载体上，因此表现出最大的催化剂活性。 使用负载型催化剂制造的燃料电池具有提高的效率。

    Mesoporous carbon molecular sieve and supported catalyst employing the same
    7.
    发明授权
    Mesoporous carbon molecular sieve and supported catalyst employing the same 有权
    介孔碳分子筛和采用其的负载型催化剂

    公开(公告)号：US07220697B2

    公开(公告)日：2007-05-22

    申请号：US10992211

    申请日：2004-11-19

    申请人： Chan-ho Pak ,  Hyuk Chang ,  Ji-man Kim

    发明人： Chan-ho Pak ,  Hyuk Chang ,  Ji-man Kim

    IPC分类号： B01J21/18 ,  B01J23/40 ,  C01B31/08 ,  C01B31/02 ,  D01F9/12

    CPC分类号： B01J35/1061 ,  B01J21/18 ,  B01J23/42 ,  B01J29/0308 ,  B01J37/06 ,  B01J37/084 ,  C01B32/00 ,  H01M4/9083 ,  H01M4/926

    摘要： The present invention is related to a mesoporous carbon molecular sieve, which can be used as a catalyst carrier capable of improving the activity of a supported catalyst and a method of preparing the same. Additionally, the invention is related to a supported catalyst employing the mesoporous carbon molecular sieve as a carrier, and a fuel cell employing the supported catalyst. The mesoporous carbon molecular sieve has an average primary particle size of less than about 500 nm, an average mesopore size in the range of about 3 nm to about 6 nm, and a surface area in the range of about 500 m2/g to about 2000 m2/g.

    摘要翻译： 本发明涉及可用作能够提高负载型催化剂的活性的催化剂载体的介孔碳分子筛及其制备方法。 另外，本发明涉及使用中孔碳分子筛作为载体的负载催化剂和使用负载型催化剂的燃料电池。 介孔碳分子筛的平均一次粒径小于约500nm，平均中孔尺寸在约3nm至约6nm的范围内，表面积在约500μm2范围内， /约至约2000m 2 / g。

    Method of manufacturing hierarchical mesoporous carbon and carbon obtained thereby
    10.
    发明授权
    Method of manufacturing hierarchical mesoporous carbon and carbon obtained thereby 有权
    由此得到层状介孔碳和碳的方法

    公开(公告)号：US09180431B2

    公开(公告)日：2015-11-10

    申请号：US13360892

    申请日：2012-01-30

    申请人： Chan-ho Pak ,  Hyuk Chang ,  Ji-man Kim

    发明人： Chan-ho Pak ,  Hyuk Chang ,  Ji-man Kim

    IPC分类号： B01J35/10 ,  H01M8/10 ,  B01J21/18 ,  B01J29/03 ,  B01J37/00 ,  C01B31/00 ,  H01M4/90

    CPC分类号： B01J21/18 ,  B01J29/0308 ,  B01J35/1066 ,  B01J37/0018 ,  C01B32/00 ,  H01M4/9016 ,  H01M4/9083 ,  H01M8/1011 ,  Y02E60/523 ,  Y02P70/56

    摘要： A hierarchical mesoporous carbon is provided in which a total volume of mesopores of the hierarchical mesoporous carbon is 80% or greater of a total volume of pores of the hierarchical mesoporous carbon; a volume of mesopores with a average diameter greater than 20 nm and no greater than 50 nm is 3% or greater of the total volume of the pores; and a volume of mesopores with a average diameter greater than 2 nm and no greater than 10 nm is 65% or greater of the total volume of the pores. The hierarchical mesoporous carbon, which also contains macropores, has an optimized mesoporous distribution characteristic, and has an increased total volume of pores, thereby having a significantly improved catalytic activity when used as a catalyst support. When such a supported catalyst is used in a fuel cell, supply of fuel and transporting of byproducts are facilitated.

    摘要翻译： 提供了分级介孔碳，其中分层介孔碳的介孔的总体积为分级介孔碳的总体积的80％或更大; 平均直径大于20nm且不大于50nm的介孔的体积为孔的总体积的3％或更大; 并且平均直径大于2nm且不大于10nm的体积的介孔为孔的总体积的65％或更大。 还含有大孔的层状中孔碳具有优化的介孔分布特征，并且具有增加的孔体积，从而当用作催化剂载体时具有显着改善的催化活性。 当这种负载型催化剂用于燃料电池中时，燃料的供应和副产物的运输便利。