Ceria-alumina oxidation catalyst
    6.
    发明授权
    Ceria-alumina oxidation catalyst 失效
    二氧化铈 - 氧化铝氧化催化剂

    公开(公告)号:US5462907A

    公开(公告)日:1995-10-31

    申请号:US247625

    申请日:1994-05-23

    摘要: Oxidation catalyst compositions include a catalytic material containing ceria and alumina each having a surface area of at least about 10 m.sup.2 /g, for example, ceria and activated alumina in a weight ratio of from about 1.5:1 to 1:1.5. Optionally, platinum may be included in the catalytic material in amounts which are sufficient to promote gas phase oxidation of CO and HC but which are limited to preclude excessive oxidation of SO.sub.2 to SO.sub.3. Alternatively, palladium in any desired amount may be included in the catalytic material. The catalyst compositions have utility as oxidation catalysts for pollution abatement of exhausts contianing unburned fuel or oil. For example, the catalyst compositions may be used in a method to treat diesel engine exhaust by contacting the hot exhaust with the catalyst composition to promote the oxidation of the volatile organic fraction component of particulates in the exhaust.

    摘要翻译: 氧化催化剂组合物包括含有表面积至少约10m 2 / g的二氧化铈和氧化铝的催化材料,例如二氧化铈和活性氧化铝,重量比为约1.5:1至1:1.5。 任选地,铂可以以足以促进CO和HC的气相氧化的量包含在催化材料中,但限制为排除SO2过度氧化成SO 3。 或者,任何所需量的钯可以包括在催化材料中。 催化剂组合物可用作氧化催化剂,用于污染消除未燃燃料或油的废气。 例如,催化剂组合物可用于通过使热排气与催化剂组合物接触来促进废气中的微粒的挥发性有机部分组分的氧化来处理柴油发动机排气的方法。

    Process conditions for operation of ignition catalyst for natural gas
combustion
    7.
    发明授权
    Process conditions for operation of ignition catalyst for natural gas combustion 失效
    用于天然气燃烧的点火催化剂的操作条件

    公开(公告)号:US5214912A

    公开(公告)日:1993-06-01

    申请号:US776907

    申请日:1991-10-16

    IPC分类号: F23C13/00 F23R3/40

    CPC分类号: F23C13/00 F23C13/08 F23R3/40

    摘要: A method for operating a palladium oxide containing catalytic combustor useful, e.g., for powering a gas turbine, wherein the palladium oxide is supported on a metal oxide such as alumina, ceria, titania or tantalum oxide. The method involves maintaining control of the temperature within the combustor in such a manner as to insure the presence of palladium oxide. By maintaining the temperature below about 800.degree. C. decomposition of palladium oxide into metallic palladium is avoided and high catalytic activity is retained. Regeneration of catalyst following inactivation resulting from an over-temperature is accomplished by using a heat soak in a temperature range which varies depending on the metal oxide used to support the palladium oxide.

    摘要翻译: 一种用于操作含氧化钯的催化燃烧器的方法,其可用于例如为燃气轮机供电,其中氧化钯负载在诸如氧化铝,二氧化铈,二氧化钛或氧化钽的金属氧化物上。 该方法包括以确保氧化钯存在的方式维持燃烧室内温度的控制。 通过保持温度低于约800℃,避免氧化钯分解成金属钯,并保持高催化活性。 通过在根据用于负载氧化钯的金属氧化物而变化的温度范围内的热浸泡来实现由过温引起的失活后催化剂的再生。

    Selective removal of olefins from hydrocarbon feed streams
    10.
    发明授权
    Selective removal of olefins from hydrocarbon feed streams 有权
    从烃进料流中选择性除去烯烃

    公开(公告)号:US06977067B2

    公开(公告)日:2005-12-20

    申请号:US10365165

    申请日:2003-02-12

    IPC分类号: C01B3/38 C01B3/26 C01B31/18

    摘要: Provided is a method of generating a hydrogen-rich reformate from a hydrocarbon feed stream comprising olefins and alkanes (e.g., LPG). An inlet gas stream containing the hydrocarbon feed stream and an oxygen containing gas stream, is preheated to a temperature of from 180 to 300° C. The preheated inlet gas stream is then contacted with a sulfur tolerant partial oxidation catalyst to form a pre-reformed gas stream, which is preferably maintained below about 400° C. The pre-reformed gas stream is then subjected to a reforming process to form the hydrogen-rich reformate.

    摘要翻译: 提供了从包含烯烃和烷烃(例如LPG)的烃进料流产生富氢重整产物的方法。 将含有烃进料流和含氧气流的入口气流预热至180℃至300℃的温度。然后将预热的入口气流与耐硫部分氧化催化剂接触以形成预转化 气流优选保持在约400℃以下。然后将预重整气流进行重整过程以形成富氢重整产物。