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    CORE / SHELL-TYPE CATALYST PARTICLES COMPRISING METAL OR CERAMIC CORE MATERIALS AND METHODS FOR THEIR PREPARATION
    6.
    发明申请
    CORE / SHELL-TYPE CATALYST PARTICLES COMPRISING METAL OR CERAMIC CORE MATERIALS AND METHODS FOR THEIR PREPARATION 有权
    包含金属或陶瓷芯材的核心/壳型催化剂颗粒及其制备方法

    公开(公告)号：US20100092841A1

    公开(公告)日：2010-04-15

    申请号：US12438984

    申请日：2007-08-27

    申请人： Marco Lopez ,  Michael Lennartz ,  Dan V. Goia ,  Carsten Becker ,  Stephanie Chevalliot

    发明人： Marco Lopez ,  Michael Lennartz ,  Dan V. Goia ,  Carsten Becker ,  Stephanie Chevalliot

    IPC分类号： H01M4/583 ,  B01J27/20 ,  B01J23/42 ,  B01J23/10

    CPC分类号： B22F1/025 ,  B22F1/0018 ,  B22F2998/00 ,  B82Y30/00 ,  H01M4/8605 ,  H01M4/8842 ,  H01M4/921 ,  H01M4/926 ,  H01M8/1007 ,  Y10T29/49345 ,  Y10T428/2991 ,  B22F9/24

    摘要： The invention is directed to core/shell type catalyst particles comprising a Mcore/Mshell structure with Mcore=inner particle core and Mshell=outer particle shell, wherein the medium diameter of the catalyst particle (dcore+shell) is in the range of 20 to 100 nm, 5 preferably in the range of 20 to 50 nm. The thickness of the outer shell (tshell) is about 5 to 20% of the diamet the inner particle core of said catalyst particle, preferably comprising at least 3 atomic layers. The inner particle core (Mcore) of the particles comprises metal or ceramic materials, whereas the material of the outer shell (Mshell) comprises precious metals and/or alloys thereof. The core/shell type catalyst particles are preferably supported on suitable support materials such as carbon black and can be used as electrocatalysts for fuel cells and for other catalytic applications.

    摘要翻译： 本发明涉及包含Mcore / Mshell结构的核/壳型催化剂颗粒，其中Mcore =内颗粒核和Mshell =外颗粒壳，其中催化剂颗粒的介质直径（dcore +壳）在20至 100nm，优选在20〜50nm的范围内。 外壳的厚度（tshell）为所述催化剂颗粒的内颗粒核心的直径的约5至20％，优选包含至少3个原子层。 颗粒的内部颗粒核心（Mcore）包括金属或陶瓷材料，而外壳的材料（Mshell）包括贵金属和/或它们的合金。 核/壳型催化剂颗粒优选负载在合适的载体材料如炭黑上，并且可以用作燃料电池的电催化剂和用于其它催化应用。

    MANUFACTURE OF BASE METAL NANOPARTICLES USING A SEED PARTICLE METHOD
    8.
    发明申请
    MANUFACTURE OF BASE METAL NANOPARTICLES USING A SEED PARTICLE METHOD 审中-公开
    使用种子颗粒法制备碱金属纳米颗粒

    公开(公告)号：US20120238443A1

    公开(公告)日：2012-09-20

    申请号：US13049165

    申请日：2011-03-16

    申请人： Dan V. Goia ,  Marco Lopez ,  Igor V. Sevonkaev

    发明人： Dan V. Goia ,  Marco Lopez ,  Igor V. Sevonkaev

    IPC分类号： H01B1/02 ,  C22C19/07 ,  C22C9/00 ,  B01J23/00 ,  B22F9/16 ,  C22C19/03 ,  B82Y99/00 ,  B82Y40/00

    CPC分类号： B22F9/24 ,  B22F1/0018 ,  B22F2998/00 ,  B82Y30/00 ,  B22F2301/10 ,  B22F2301/15 ,  B22F2304/054 ,  B22F2304/056

    摘要： The present invention is directed to a process for manufacture of base metal nano-particles using precious metal seed particles.The process comprises the steps of mixing at least one base metal precursor and at least one precious metal precursor in one or more polyol solvents, reacting the mixture at a temperature in the range of 110 to 150° C. to form precious metal seed particles (STEP A) and reacting the mixture at a temperature in the range of 180 to 220° C. to form the final metal particles (STEP B). Base metal particles of Co, Ni and Cu containing 100 to 10000 ppm of precious metals Ru, Pd, Pt or Ir are obtained.The resulting metal nano-particles with medium diameters of 20 to 200 nm are useful for electronic and catalytic applications and can be used as core materials for the manufacture core/shell type catalysts.

    摘要翻译： 本发明涉及使用贵金属种子颗粒制造贱金属纳米颗粒的方法。 该方法包括以下步骤：在一种或多种多元醇溶剂中混合至少一种母体金属前体和至少一种贵金属前体，使该混合物在110-150℃的温度下反应，形成贵金属种子颗粒（ 步骤A），并使混合物在180-220℃的温度下反应以形成最终的金属颗粒（步骤B）。 得到含有100〜10000ppm贵金属Ru，Pd，Pt或Ir的Co，Ni和Cu的母体金属颗粒。 所得到的中等直径为20-200nm的金属纳米颗粒可用于电子和催化应用，可用作制造核/壳型催化剂的核心材料。

    Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith
    9.
    发明授权
    Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith 有权
    制备贵金属合金催化剂的方法及其制备的催化剂

    公开(公告)号：US08017548B2

    公开(公告)日：2011-09-13

    申请号：US12752410

    申请日：2010-04-01

    申请人： Dan V. Goia ,  Marco Lopez ,  Tapan Kumar Sau ,  Mihaela-Ortansa Jitianu

    发明人： Dan V. Goia ,  Marco Lopez ,  Tapan Kumar Sau ,  Mihaela-Ortansa Jitianu

    IPC分类号： B01J23/00 ,  B01J21/00 ,  B01J20/00 ,  H01M4/02 ,  H01M4/36

    CPC分类号： B82Y30/00 ,  B01D53/944 ,  B01D2255/1021 ,  B01D2255/1026 ,  B01D2255/106 ,  B01D2255/20746 ,  B01D2255/9202 ,  B01D2257/502 ,  B01J21/18 ,  B01J23/40 ,  B01J23/462 ,  B01J23/52 ,  B01J23/8913 ,  B01J35/0013 ,  B01J35/006 ,  B01J37/0072 ,  B01J37/0211 ,  B01J37/088 ,  B22F9/24 ,  B22F2998/00 ,  H01M4/921 ,  H01M4/926 ,  B22F2303/01 ,  B22F2301/25 ,  B22F2303/05 ,  B22F2301/15

    摘要： The present invention provides a method for manufacture of supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method is based on the use of polyol solvents as reaction medium and comprises of a two-step reduction process in the presence of a support material. In the first step, the first metal (M1=transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (M2=noble metal; e.g. Pt, Pd, Au and mixtures thereof) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. Due to this two-step method, an uniform reduction occurs, resulting in noble metal based catalysts with a high degree of alloying and a small crystallite size of less than 3 nm. Due to the high degree of alloying, the lattice constants are lowered. The catalysts manufactured according to the method are used as electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC), direct-methanol fuel cells (DMFC) or as gas phase catalysts for CO oxidation or exhaust gas purification.

    摘要翻译： 本发明提供一种具有高合金化和微晶尺寸的负载型贵金属基合金催化剂的制造方法。 该方法基于使用多元醇溶剂作为反应介质，并且包括在存在载体材料的情况下的两步还原过程。 在第一步骤中，第一金属（M1 =过渡金属，例如Co，Cr，Ru）通过将反应温度升高至80至160℃来活化。在第二步中，第二金属（M2 =贵金属;例如 Pt，Pd，Au及其混合物），将浆料加热到多元醇溶剂的沸点在160〜300℃的范围内。由于这种两步法，发生均匀的还原，导致贵金属 具有高度合金化和小于3nm的微晶尺寸的金属基催化剂。 由于高合金化，晶格常数降低。 根据该方法制造的催化剂用作聚合物电解质膜燃料电池（PEMFC），直接甲醇燃料电池（DMFC）或用于CO氧化或废气净化的气相催化剂的电极催化剂。

    Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith
    10.
    发明授权
    Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith 有权
    制备贵金属合金催化剂的方法及其制备的催化剂

    公开(公告)号：US07713910B2

    公开(公告)日：2010-05-11

    申请号：US10977579

    申请日：2004-10-29

    申请人： Dan V. Goia ,  Marco Lopez ,  Tapan Kumar Sau ,  Mihaela-Ortansa Jitianu

    发明人： Dan V. Goia ,  Marco Lopez ,  Tapan Kumar Sau ,  Mihaela-Ortansa Jitianu

    IPC分类号： B01J23/00 ,  B01J21/00 ,  B01J20/00

    CPC分类号： B82Y30/00 ,  B01D53/944 ,  B01D2255/1021 ,  B01D2255/1026 ,  B01D2255/106 ,  B01D2255/20746 ,  B01D2255/9202 ,  B01D2257/502 ,  B01J21/18 ,  B01J23/40 ,  B01J23/462 ,  B01J23/52 ,  B01J23/8913 ,  B01J35/0013 ,  B01J35/006 ,  B01J37/0072 ,  B01J37/0211 ,  B01J37/088 ,  B22F9/24 ,  B22F2998/00 ,  H01M4/921 ,  H01M4/926 ,  B22F2303/01 ,  B22F2301/25 ,  B22F2303/05 ,  B22F2301/15

    摘要： The present invention provides a method for manufacture of supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method is based on the use of polyol solvents as reaction medium and comprises of a two-step reduction process in the presence of a support material. In the first step, the first metal (M1=transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (M2=noble metal; e.g. Pt, Pd, Au and mixtures thereof) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. Due to this two-step method, an uniform reduction occurs, resulting in noble metal based catalysts with a high degree of alloying and a small crystallite size of less than 3 nm. Due to the high degree of alloying, the lattice constants are lowered. The catalysts manufactured according to the method are used as electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC), direct-methanol fuel cells (DMFC) or as gas phase catalysts for CO oxidation or exhaust gas purification.

    摘要翻译： 本发明提供一种具有高合金化和微晶尺寸的负载型贵金属基合金催化剂的制造方法。 该方法基于使用多元醇溶剂作为反应介质，并且包括在存在载体材料的情况下的两步还原过程。 在第一步骤中，第一金属（M1 =过渡金属，例如Co，Cr，Ru）通过将反应温度升高至80至160℃来活化。在第二步中，第二金属（M2 =贵金属;例如 Pt，Pd，Au及其混合物），将浆料加热到多元醇溶剂的沸点在160〜300℃的范围内。由于这种两步法，发生均匀的还原，导致贵金属 具有高度合金化和小于3nm的微晶尺寸的金属基催化剂。 由于高合金化，晶格常数降低。 根据该方法制造的催化剂用作聚合物电解质膜燃料电池（PEMFC），直接甲醇燃料电池（DMFC）或用于CO氧化或废气净化的气相催化剂的电极催化剂。