Apparatus for testing catalyst
    1.
    发明授权
    Apparatus for testing catalyst 有权
    催化剂试验装置

    公开(公告)号:US08703060B2

    公开(公告)日:2014-04-22

    申请号:US13175914

    申请日:2011-07-04

    CPC classification number: G01N33/22 Y10T83/2135

    Abstract: A catalyst-testing apparatus includes a heater, a U-shaped reactor, a gas flow controller, a liquid flow controller, two pressure gauges, a separator and a chromatograph. In use, under control of the gas flow controller, natural gas and air are directed to the U-shaped reactor. Under control of the liquid flow controller, pure water is directed to the U-shaped reactor. The pure water travels down the wall of the U-shaped reactor. The pure water is heated and turned into steam in a front section of the U-shaped reactor. Together with the natural gas and the air, the steam is directed to a catalyst zone in the U-shaped reactor for reaction. With the chromatograph, volumes and compositions of resultant gases are analyzed. Thus, the stability of the performance of the catalyst is tested, and the performance of the catalyst for producing hydrogen by is revealed.

    Abstract translation: 催化剂检测装置包括加热器,U形反应器,气体流量控制器,液体流量控制器,两个压力计,分离器和色谱仪。 在使用中,在气流控制器的控制下,天然气和空气被引导到U型反应器。 在液体流量控制器的控制下,纯水被引导到U型反应器。 纯水沿U型反应堆的壁向下移动。 纯水在U形反应器的前部被加热并变成蒸汽。 与天然气和空气一起,蒸汽被引导到U形反应器中的催化剂区域用于反应。 用色谱仪分析所得气体的体积和组成。 因此,测试了催化剂性能的稳定性,揭示了生产氢气的催化剂的性能。

    Apparatus for Testing Catalyst
    2.
    发明申请
    Apparatus for Testing Catalyst 有权
    催化剂测试装置

    公开(公告)号:US20130011299A1

    公开(公告)日:2013-01-10

    申请号:US13175914

    申请日:2011-07-04

    CPC classification number: G01N33/22 Y10T83/2135

    Abstract: A catalyst-testing apparatus includes a heater, a U-shaped reactor, a gas flow controller, a liquid flow controller, two pressure gauges, a separator and a chromatograph. In use, under control of the gas flow controller, natural gas and air are directed to the U-shaped reactor. Under control of the liquid flow controller, pure water is directed to the U-shaped reactor. The pure water travels down the wall of the U-shaped reactor. The pure water is heated and turned into steam in a front section of the U-shaped reactor. Together with the natural gas and the air, the steam is directed to a catalyst zone in the U-shaped reactor for reaction. With the chromatograph, volumes and compositions of resultant gases are analyzed. Thus, the stability of the performance of the catalyst is tested, and the performance of the catalyst for producing hydrogen by is revealed.

    Abstract translation: 催化剂检测装置包括加热器,U形反应器,气体流量控制器,液体流量控制器,两个压力计,分离器和色谱仪。 在使用中,在气流控制器的控制下,天然气和空气被引导到U型反应器。 在液体流量控制器的控制下,纯水被引导到U型反应器。 纯水沿U型反应堆的壁向下移动。 纯水在U形反应器的前部被加热并变成蒸汽。 与天然气和空气一起,蒸汽被引导到U形反应器中的催化剂区域用于反应。 用色谱仪分析所得气体的体积和组成。 因此,测试了催化剂性能的稳定性,揭示了生产氢气的催化剂的性能。

    METHODS OF MAKING PLATINUM AND PLATINUM ALLOY CATALYSTS WITH NANONETWORK STRUCTURES
    5.
    发明申请
    METHODS OF MAKING PLATINUM AND PLATINUM ALLOY CATALYSTS WITH NANONETWORK STRUCTURES 失效
    制备具有纳米结构的铂和铂合金催化剂的方法

    公开(公告)号:US20090312180A1

    公开(公告)日:2009-12-17

    申请号:US10907950

    申请日:2005-04-22

    Abstract: This invention relates to the preparations of noble metal catalysts, i.e., platinum and platinum alloys, on suitable supports with nanonetwork structures and high catalytic efficiencies. A compact structure of a monolayer or a few layers is formed by self-assembly of organic polymer, e.g., polystyrene (PS), nanospheres or inorganic, i.e., silicon dioxide (SiO2), nanospheres on a support surface. In the void spaces of such a compact arrangement, catalyst is formed by filling with catalyst metal ion-containing aqueous solution and reduced by chemical reduction, or formed by vacuum sputtering. When using organic polymer nanospheres as the starting or structure-directing material, the polymer particles are removed by burning at a high temperature and the catalyst having a nanonetwork structure is obtained. In the case of using silicon dioxide nanospheres as the starting material, silicon dioxide particles are dissolved with hydrofluoric acid solution and evaporated away leading to formation of a similar nanonetwork structure made of catalyst. The catalysts prepared by these methods possess characteristics of robust in structure, uniform in hole size and high in catalytic surface area. Their main applications include uses as catalysts in direct methanol and proton exchange membrane fuel cells, as well as in chemical reactors, fuel reformers, catalytic converters, etc.

    Abstract translation: 本发明涉及贵金属催化剂即铂和铂合金在具有纳米网络结构和高催化效率的合适载体上的制备。 通过在载体表面上自组装有机聚合物,例如聚苯乙烯(PS),纳米球或无机即二氧化硅(SiO 2)纳米球,形成单层或几层的致密结构。 在这种紧凑结构的空隙空间中,通过填充含催化剂金属离子的水溶液并通过化学还原减少或通过真空溅射形成催化剂。 当使用有机聚合物纳米球作为起始或结构导向材料时,通过在高温下燃烧除去聚合物颗粒,并获得具有纳米网络结构的催化剂。 在使用二氧化硅纳米球作为起始材料的情况下,二氧化硅颗粒用氢氟酸溶液溶解并蒸发掉,导致形成由催化剂制成的类似的纳米网络结构。 通过这些方法制备的催化剂具有结构坚固,孔尺寸均匀,催化表面积高的特点。 其主要应用包括用作直接甲醇和质子交换膜燃料电池中的催化剂,以及化学反应器,燃料重整器,催化转化器等。

    Methods of making platinum and platinum alloy catalysts with nanonetwork structures
    6.
    发明授权
    Methods of making platinum and platinum alloy catalysts with nanonetwork structures 失效
    制备具有纳米网络结构的铂和铂合金催化剂的方法

    公开(公告)号:US07700520B2

    公开(公告)日:2010-04-20

    申请号:US10907950

    申请日:2005-04-22

    Abstract: This invention relates to the preparations of noble metal catalysts, i.e., platinum and platinum alloys, on suitable supports with nanonetwork structures and high catalytic efficiencies. A compact structure of a monolayer or a few layers is formed by self-assembly of organic polymer, e.g., polystyrene (PS), nanospheres or inorganic, i.e., silicon dioxide (SiO2), nanospheres on a support surface. In the void spaces of such a compact arrangement, catalyst is formed by filling with catalyst metal ion-containing aqueous solution and reduced by chemical reduction, or formed by vacuum sputtering. When using organic polymer nanospheres as the starting or structure-directing material, the polymer particles are removed by burning at a high temperature and the catalyst having a nanonetwork structure is obtained. In the case of using silicon dioxide nanospheres as the starting material, silicon dioxide particles are dissolved with hydrofluoric acid solution and evaporated away leading to formation of a similar nanonetwork structure made of catalyst. The catalysts prepared by these methods possess characteristics of robust in structure, uniform in hole size and high in catalytic surface area. Their main applications include uses as catalysts in direct methanol and proton exchange membrane fuel cells, as well as in chemical reactors, fuel reformers, catalytic converters, etc.

    Abstract translation: 本发明涉及贵金属催化剂即铂和铂合金在具有纳米网络结构和高催化效率的合适载体上的制备。 通过在载体表面上自组装有机聚合物,例如聚苯乙烯(PS),纳米球或无机即二氧化硅(SiO 2)纳米球,形成单层或几层的致密结构。 在这种紧凑结构的空隙空间中,通过填充含催化剂金属离子的水溶液并通过化学还原减少或通过真空溅射形成催化剂。 当使用有机聚合物纳米球作为起始或结构导向材料时,通过在高温下燃烧除去聚合物颗粒,并获得具有纳米网络结构的催化剂。 在使用二氧化硅纳米球作为起始材料的情况下,二氧化硅颗粒用氢氟酸溶液溶解并蒸发掉,导致形成由催化剂制成的类似的纳米网络结构。 通过这些方法制备的催化剂具有结构坚固,孔尺寸均匀,催化表面积高的特点。 其主要应用包括用作直接甲醇和质子交换膜燃料电池中的催化剂,以及化学反应器,燃料重整器,催化转化器等。

    A versatile electrochemical sensor for sensing fuel concentration in an aqueous solution
    7.
    发明申请
    A versatile electrochemical sensor for sensing fuel concentration in an aqueous solution 审中-公开
    用于检测水溶液中燃料浓度的多功能电化学传感器

    公开(公告)号:US20060272943A1

    公开(公告)日:2006-12-07

    申请号:US10908990

    申请日:2005-06-03

    Abstract: A simple fuel cell-type electrochemical sensor for sensing the concentration of a specific fuel, e.g., methanol, ethanol, formic acid, sodium borohydride, etc., prepared in an aqueous solution is developed. The sensor is mainly composed of a membrane electrode assembly (MEA), which is made by hot pressing a piece of electro catalytic anode and a piece of electro catalytic cathode on each side of a proton exchange membrane (PEM), such as Nafion® 117. It is uniquely designed to have an anode size much smaller than that of the cathode and utilizes ambient air as an oxidant. The innovative approach is to ensure the fuel diffused to the anode/membrane interface can be totally reacted so as to eliminate the interferences of fuel crossover and enhance output signal. Thus, the measured sensor current reflects the concentration of diffusion-limited fuel at the membrane/electrode interface, which is proportional to fuel concentration in the bulk. It can be easily operated in a passive mode as well as in an active mode with aqueous fuel solution under a stagnant or a flowing condition. The applications include uses in fuel cell systems, such as direct methanol fuel cell systems, for sensing and monitoring fuel concentration in an aqueous solution.

    Abstract translation: 开发了用于感测在水溶液中制备的特定燃料(例如甲醇,乙醇,甲酸,硼氢化钠等)的浓度的简单燃料电池型电化学传感器。 该传感器主要由膜电极组件(MEA)组成,该膜电极组件通过热电催化阳极和质子交换膜(PEM)两侧的电催化阴极(如Nafion(R) )117.其独特设计为具有比阴极尺寸小得多的阳极尺寸,并且利用环境空气作为氧化剂。 创新的方法是确保扩散到阳极/膜界面的燃料可以完全反应,以消除燃料交叉的干扰并增强输出信号。 因此,测量的传感器电流反映了膜/电极界面处的扩散受限燃料的浓度,其与体积中的燃料浓度成比例。 在惰性或流动状态下,它可以容易地在被动模式以及活性模式下与含水燃料溶液一起操作。 这些应用包括用于燃料电池系统,例如直接甲醇燃料电池系统,用于感测和监测水溶液中的燃料浓度。

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