Methodology for the effective stabilization of tin-oxide-based oxidation/reduction catalysts
    1.
    发明申请
    Methodology for the effective stabilization of tin-oxide-based oxidation/reduction catalysts 有权
    用于氧化锡基氧化还原催化剂有效稳定的方法

    公开(公告)号:US20050079115A1

    公开(公告)日:2005-04-14

    申请号:US10956515

    申请日:2004-09-28

    IPC分类号: B01D53/94 B01J23/62 B01J23/63

    摘要: The invention described herein involves a novel approach to the production of oxidation/reduction catalytic systems. The present invention serves to stabilize the tin oxide reducible metal-.oxide coating by co-incorporating at least another metal-oxide species, such as zirconium. In one embodiment, a third metal-oxide species is incorporated, selected from the group consisting of cerium, lanthanum, hafnium, and ruthenium. The incorporation of the additional metal oxide components serves to stabilize the active tin-oxide layer in the catalytic process during high-temperature operation in a reducing environment (e.g., automobile exhaust). Moreover, the additional metal oxides are active components due to their oxygen-retention capabilities. Together, these features provide a mechanism to extend the range of operation of the tin-oxide-based catalyst system for automotive applications, while maintaining the existing advantages.

    摘要翻译: 本文描述的发明涉及生产氧化/还原催化体系的新方法。 本发明用于通过共同引入至少另一种金属氧化物物质如锆来稳定氧化锡可还原的金属 - 氧化物涂层。 在一个实施方案中,引入第三金属氧化物物质,其选自铈,镧,铪和钌。 另外的金属氧化物组分的引入用于在还原环境(例如,汽车排气)中的高温操作期间在催化过程中稳定活性氧化锡层。 此外,由于其保氧能力,附加的金属氧化物是活性组分。 这些特征一起提供了一种机制,以扩展用于汽车应用的氧化锡基催化剂体系的操作范围,同时保持现有的优点。

    Carbon nanotube-based sensor and method for continually sensing changes in a structure
    2.
    发明申请
    Carbon nanotube-based sensor and method for continually sensing changes in a structure 有权
    基于碳纳米管的传感器和连续感测结构变化的方法

    公开(公告)号:US20060010996A1

    公开(公告)日:2006-01-19

    申请号:US10890843

    申请日:2004-07-13

    IPC分类号: G01D5/12 G01N27/00 B82B1/00

    摘要: A sensor has a plurality of carbon nanotube (CNT)-based conductors operatively positioned on a substrate. The conductors are arranged side-by-side, such as in a substantially parallel relationship to one another. At least one pair of spaced-apart electrodes is coupled to opposing ends of the conductors. A portion of each of the conductors spanning between each pair of electrodes comprises a plurality of carbon nanotubes arranged end-to-end and substantially aligned along an axis. Because a direct correlation exists between resistance of a carbon nanotube and carbon nanotube strain, changes experienced by the portion of the structure to which the sensor is coupled induce a change in electrical properties of the conductors.

    摘要翻译: 传感器具有可操作地定位在基板上的多个基于碳纳米管(CNT)的导体。 导体并排布置,例如彼此基本上平行的关系。 至少一对间隔开的电极耦合到导体的相对端。 跨越每对电极的每个导体的一部分包括端对端并沿轴线基本上对准的多个碳纳米管。 由于在碳纳米管和碳纳米管应变的电阻之间存在直接的相关性,传感器耦合的结构部分所经历的变化导致导体的电性能的变化。

    Catalytic oxidation system
    3.
    发明申请
    Catalytic oxidation system 审中-公开
    催化氧化体系

    公开(公告)号:US20070183952A1

    公开(公告)日:2007-08-09

    申请号:US10795097

    申请日:2004-03-04

    摘要: An exhaust gas treatment system having an exhaust gas inlet section, an oxygen enrichment system, catalyst holding arms, and an exhaust gas outlet section is disclosed. The exhaust gas inlet and outlet sections can be designed to mate to existing exhaust gas plumbing systems for industrial facilities. The optional oxygen enrichment system helps optimize catalytic performance by maintaining excess oxygen in the exhaust gas stream and by imparting greater turbulence to the exhaust gas stream. Disposed within each catalyst holding arm is at least one catalyst coated substrate where the catalytic oxidation of formaldehyde and other volatile organic compounds occurs. The catalytic substrate can be catalyst coated bricks, particles, beads, fabrics, or filter materials. Each catalyst holding arm can be selectively closed off using upstream and downstream isolation valves. Catalyst coated substrate longevity can be increased by the inclusion of an optional filter upstream of the catalyst coated substrates.

    摘要翻译: 公开了一种具有排气入口部分,富氧系统,催化剂保持臂和排气出口部分的废气处理系统。 排气入口和出口部分可以设计成与工业设施的现有废气管道系统配合。 可选的氧气富集系统通过维持废气流中的过量氧并且对废气流赋予更大的湍流来帮助优化催化性能。 在每个催化剂保持臂内设置有至少一个催化剂涂覆的基底,其中发生甲醛和其它挥发性有机化合物的催化氧化。 催化底物可以是催化剂涂覆的砖,颗粒,珠,织物或过滤材料。 可以使用上游和下游隔离阀选择性地关闭每个催化剂保持臂。 催化剂涂覆的基材寿命可以通过在催化剂涂覆的基材上游包含任选的过滤器来提高寿命。