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    STABILIZED PLATINUM CATALYST
    71.
    发明申请
    STABILIZED PLATINUM CATALYST 有权
    稳定的铂催化剂

    公开(公告)号：US20110143934A1

    公开(公告)日：2011-06-16

    申请号：US12867153

    申请日：2008-05-16

    申请人： Minhua Shao ,  Belabbes Merzougui ,  Patrick L. Hagans ,  Susanne M. Opalka

    发明人： Minhua Shao ,  Belabbes Merzougui ,  Patrick L. Hagans ,  Susanne M. Opalka

    IPC分类号： B01J23/42 ,  B01J23/52 ,  B01J23/46 ,  B01J23/656 ,  B01J23/44 ,  B01J23/50 ,  B01J23/652 ,  B01J23/648 ,  B01J21/06 ,  B01J23/68 ,  B82Y30/00

    CPC分类号： B01J35/0013 ,  B01J23/42 ,  B01J23/56 ,  B01J37/0226 ,  B01J37/347 ,  B01J37/348

    摘要： A stabilized platinum nanoparticle has a core portion surrounded by a plurality of outer surfaces. The outer surfaces include terrace regions formed of platinum atoms, and edge and corner regions formed of atoms from a second metal. The stabilized nanoparticle may be formed by combining a platinum nanoparticle with a metal salt in a solution. Ions of the second metal react with platinum and replace platinum atoms on the nanoparticle. Platinum atoms from the edge and corner regions react with the second metal ions quicker than surface atoms from the terraces, due to a greater difference in electrode potential between the platinum atoms at the edge and corner regions, as compared to the second metal in the solution. The platinum nanoparticle may include surface defects, such as steps and kinks, which may also be replaced with atoms of the second metal. In an exemplary embodiment, the platinum nanoparticle is a cathode catalyst in an electro-chemical cell.

    摘要翻译： 稳定的铂纳米颗粒具有由多个外表面包围的芯部分。 外表面包括由铂原子形成的平台区域，以及由第二金属原子形成的边缘和拐角区域。 稳定的纳米颗粒可以通过将铂纳米颗粒与溶液中的金属盐组合而形成。 第二金属的离子与铂反应，并取代纳米颗粒上的铂原子。 由于与溶液中的第二金属相比，在边缘和拐角区域处的铂原子与边缘和角部区域上的铂原子之间的电极电位差异更大，所以来自边缘和角区域的铂原子与第二金属离子比来自梯田的表面原子更快地反应 。 铂纳米颗粒可以包括表面缺陷，例如步骤和扭结，其也可以被第二金属的原子替代。 在示例性实施方案中，铂纳米颗粒是电化学电池中的阴极催化剂。

    Novel Platinum-Ruthenium Based Catalysts for Direct Methanol Fuel Cell
    72.
    发明申请
    Novel Platinum-Ruthenium Based Catalysts for Direct Methanol Fuel Cell 审中-公开
    用于直接甲醇燃料电池的新型铂 - 钌基催化剂

    公开(公告)号：US20090069172A1

    公开(公告)日：2009-03-12

    申请号：US12167093

    申请日：2008-07-02

    申请人： Mina Touma Farag ,  Yi-Qun Li

    发明人： Mina Touma Farag ,  Yi-Qun Li

    IPC分类号： H01M4/88 ,  B01J23/648 ,  B01J23/75 ,  B01J23/72 ,  C23C14/46 ,  B01J23/656 ,  B01J23/755

    CPC分类号： H01M4/921 ,  H01M4/8871 ,  H01M4/926 ,  H01M8/1011 ,  Y02E60/523

    摘要： Embodiments of the present invention are directed to ternary and/or quaternary catalyst alloys for a direct methanol fuel cell (DMFC). The catalyst has the composition (Pt1-xRux)yM′zM″1-y-z, where M′ is selected from the group consisting of W, Mo, Nb, and Ta; M″ is selected from the group consisting of V, Co, Ni, Mn, and Cu; x ranges from about 0 to about 1; y ranges from about 0.01 to about 0.99; and y+z is about equal to 1. The catalyst may be deposited onto a porous carrier, and the deposition method may include ion-beam sputtering. The onset voltages of the present compositions are lower than that of conventional Pt—Ru binary systems by approximately 0.355 volts, and thus provide enhanced catalytic activity.

    摘要翻译： 本发明的实施方案涉及用于直接甲醇燃料电池（DMFC）的三元和/或四元催化剂合金。 催化剂具有组成（Pt1-xRux）yM'zM'1-y-z，其中M'选自W，Mo，Nb和Ta; M“选自V，Co，Ni，Mn和Cu; x的范围为约0至约1; y在约0.01至约0.99的范围内; 并且y + z约等于1.催化剂可以沉积在多孔载体上，并且沉积方法可以包括离子束溅射。 本发明组合物的起始电压低于常规Pt-Ru二元系统约0.355伏特，因此提供增强的催化活性。

    Catalytic oxidation of organic nitrogen-containing compounds
    77.
    发明授权
    Catalytic oxidation of organic nitrogen-containing compounds 失效
    有机含氮化合物的催化氧化

    公开(公告)号：US5720931A

    公开(公告)日：1998-02-24

    申请号：US505800

    申请日：1995-07-21

    申请人： Joseph A. Rossin ,  Jeffrey M. Campbell

    发明人： Joseph A. Rossin ,  Jeffrey M. Campbell

    IPC分类号： B01D53/54 ,  B01D53/86 ,  B01J23/648 ,  B01J23/652 ,  C01C3/00

    CPC分类号： B01J23/652 ,  B01D53/54 ,  B01D53/8621 ,  B01J23/6482 ,  Y02C20/10

    摘要： A method of treating a gaseous stream containing one or more volatile nitrogen-containing organic compounds which comprises contacting the gaseous stream and an oxidizing agent with a catalyst at relatively low temperatures to cause oxidation of the volatile nitrogen-containing organic compounds. The catalyst employed promotes the oxidation reaction to selectively produce N.sub.2 O, N.sub.2, CO.sub.2 and H.sub.2 O without generating significant amounts of NO.sub.x to permit the reaction products to be vented directly into the atmosphere. The catalyst includes a selected amount of a noble or base metal deposited on a catalyst support comprising titania or zirconia. One or more of the elements molybdenum, tungsten or vanadium are added as promoters to the composition which minimizes the generation of NO.sub.x among the reaction products. Lanthanum may be added to provide better thermal stability and increase the selectivity for producing N.sub.2 among the reaction products. The process is effective when the gas stream also includes other non-nitrogen-containing organic compounds or NO.sub.x mixed with the nitrogen containing compound being treated without generating significant amounts of NO.sub.x in the reaction products.

    摘要翻译： 一种处理含有一种或多种挥发性含氮有机化合物的气流的方法，包括使气流与氧化剂在较低温度下与催化剂接触以引起挥发性含氮有机化合物的氧化。 所用的催化剂促进了氧化反应以选择性地产生N 2 O，N 2，CO 2和H 2 O，而不产生大量的NOx，以使反应产物直接排放到大气中。 催化剂包括沉积在包含二氧化钛或氧化锆的催化剂载体上的选定量的贵金属或碱金属。 将一种或多种元素钼，钨或钒作为促进剂加入到组合物中，其使反应产物中的NOx的产生最小化。 可以加入镧以提供更好的热稳定性并增加反应产物中产生N 2的选择性。 当气流还包括与待处理的含氮化合物混合的其它非含氮有机化合物或NOx反应产物中不产生大量的NOx时，该方法是有效的。

    Catalyst for the catalytic afterburning of exhaust gases containing carbon monoxide and/or oxidizable organic compounds
    79.
    发明授权
    Catalyst for the catalytic afterburning of exhaust gases containing carbon monoxide and/or oxidizable organic compounds 失效
    用于催化后燃烧含有一氧化碳和/或可氧化有机化合物的废气的催化剂

    公开(公告)号：US5527755A

    公开(公告)日：1996-06-18

    申请号：US211984

    申请日：1994-04-25

    申请人： Guido Wenski ,  Margit Hammer

    发明人： Guido Wenski ,  Margit Hammer

    IPC分类号： B01D53/44 ,  B01D53/62 ,  B01D53/86 ,  B01D53/94 ,  B01J23/64 ,  B01J23/648 ,  B01J21/06 ,  B01J23/16 ,  B01J23/40

    CPC分类号： B01J23/6482 ,  B01D53/864

    摘要： The invention relates to catalysts for the catalytic post-combustion of exhaust gases containing carbon monoxide and/or oxidizable organic compounds and processes for their production. The catalysts contain 70 to 99% wt., calculated as TiO.sub.2, of a titanium oxide component, 1 to 30% wt., calculated as V.sub.2 O.sub.5 of a vanadium oxide component and 0.01 to 0.9% wt., calculated as noble metal, of a noble metal component from one or more nobel metal compounds of nobel metals of the 8th sub-group. The catalysts are characterized by a low starting (.ltoreq.220.degree. CC.) and operating temperature and their ability to oxidize even slight pollution of the exhaust gas with oxygen-containing or free aliphatic and aromatic hydrocarbons and carbon monoxide in the presence of gases containing molecular oxygen almost quantitatively to the substantially ecologically acceptable products carbon dioxide and water.

    摘要翻译： PCT No.PCT / EP93 / 00873 Sec。 371日期1994年04月25日 102（e）日期1994年4月25日PCT提交1993年4月8日PCT公布。 公开号WO93 / 20936 日期：1993年10月28日。本发明涉及用于催化后燃烧含有一氧化碳和/或可氧化有机化合物的废气的催化剂及其制备方法。 催化剂含有以TiO 2计的氧化钛组分70至99重量％，氧化钛组分为1至30重量％，以钒氧化物组分的V 2 O 5计，以贵金属计算为0.01-0.9重量％ 来自第八族的一种或多种诺贝尔金属的诺贝尔金属化合物的贵金属组分。 催化剂的特征在于起始（