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    Compositions for abatement of volatile organic compounds and apparatus and methods using the same
    1.
    发明授权
    Compositions for abatement of volatile organic compounds and apparatus and methods using the same 有权
    减少挥发性有机化合物的组合物及其使用方法

    公开(公告)号：US06319484B1

    公开(公告)日：2001-11-20

    申请号：US09460924

    申请日：1999-12-14

    申请人： Lawrence Shore ,  Robert J. Farrauto ,  Michel Deeba ,  Jordan K. Lampert ,  Ronald M. Heck

    发明人： Lawrence Shore ,  Robert J. Farrauto ,  Michel Deeba ,  Jordan K. Lampert ,  Ronald M. Heck

    IPC分类号： B01J802

    CPC分类号： B01D53/0407 ,  B01D53/8668 ,  B01D53/869 ,  B01D53/885 ,  B01D2253/108 ,  B01D2253/308 ,  B01D2257/708 ,  B01D2259/40088 ,  F24C15/205

    摘要： A composition for abatement of airborne pollution by volatile organic compounds (“VOCs”) has an upstream composition which contains a protective adsorbent, e.g., Y zeolite, which is effective for adsorbing large VOC molecules, e.g., toluene, and a protective oxidation catalyst intimately intermingled therewith. The downstream composition contains a second adsorbent, e.g., a silver-containing ZSM-5, which is effective for adsorbing relatively smaller VOC molecules, e.g., propylene, and a second oxidation catalyst intimately intermingled therewith. Oxidation of VOCs while they are still retained on the adsorbents is promoted at temperatures lower than would be required if the VOCs were desorbed into the gaseous phase. Apparatus is provided including a first contact member (24) coated with the upstream composition and positioned upstream of a second contact member (32) coated with the downstream composition. A heat exchanger (22) equipped with a temperature control device (40) is positioned upstream of both contact members to vary the treatment temperature between an adsorption temperature range and a higher, oxidation temperature range, both lying within an operating temperature range of from about 20 to 500° C.

    摘要翻译： 用于减少挥发性有机化合物（“VOC”）的空气污染的组合物具有上游组合物，其含有保护性吸附剂，例如Y沸石，其对于吸附大的VOC分子（例如甲苯）和保护性氧化催化剂是有效的 与之混合 下游组合物包含第二吸附剂，例如含银ZSM-5，其对于吸附相对较小的VOC分子（例如丙烯）和与其紧密混合的第二氧化催化剂是有效的。 当VOCs仍然保留在吸附剂上时，VOC的氧化在低于如果VOC被解吸到气相中所需的温度下被促进。 提供了包括涂覆有上游组合物并位于涂覆有下游组合物的第二接触构件（32）的上游的第一接触构件（24）的设备。 配备有温度控制装置（40）的热交换器（22）位于两个接触构件的上游，以改变吸附温度范围和更高的氧化温度范围之间的处理温度，两者处于约 20〜500℃

    Ceria-alumina oxidation catalyst
    3.
    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

    申请人： Robert J. Farrauto ,  Kenneth E. Voss ,  Ronald M. Heck

    发明人： Robert J. Farrauto ,  Kenneth E. Voss ,  Ronald M. Heck

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/10 ,  B01J23/40 ,  B01J23/63 ,  B01J29/72 ,  B01J35/10 ,  B01J37/02 ,  F02B3/06 ,  F24C15/20 ,  B01J21/04 ,  B01J23/42

    CPC分类号： B01D53/9481 ,  B01D53/864 ,  B01D53/8668 ,  B01D53/944 ,  B01J23/10 ,  B01J23/63 ,  B01J35/10 ,  B01J37/0215 ,  B01J37/0244 ,  B01J29/7215 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1047 ,  B01J35/1061 ,  F02B3/06

    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。

    Ceria-alumina oxidation catalyst
    4.
    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：US5627124A

    公开(公告)日：1997-05-06

    申请号：US492178

    申请日：1995-06-19

    申请人： Robert J. Farrauto ,  Kenneth E. Voss ,  Ronald M. Heck

    发明人： Robert J. Farrauto ,  Kenneth E. Voss ,  Ronald M. Heck

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/10 ,  B01J23/40 ,  B01J23/63 ,  B01J29/72 ,  B01J35/10 ,  B01J37/02 ,  F02B3/06 ,  F24C15/20 ,  B01J21/04

    CPC分类号： B01D53/9481 ,  B01D53/864 ,  B01D53/8668 ,  B01D53/944 ,  B01J23/10 ,  B01J23/63 ,  B01J35/10 ,  B01J37/0215 ,  B01J37/0244 ,  B01J29/7215 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1047 ,  B01J35/1061 ,  F02B3/06

    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。

    Method for using a close coupled catalyst
    9.
    发明授权
    Method for using a close coupled catalyst 有权
    使用紧密耦合催化剂的方法

    公开(公告)号：US06254842B1

    公开(公告)日：2001-07-03

    申请号：US09425714

    申请日：1999-10-22

    申请人： Zhicheng Hu ,  Ronald M. Heck ,  Harold N. Rabinowitz

    发明人： Zhicheng Hu ,  Ronald M. Heck ,  Harold N. Rabinowitz

    IPC分类号： B01J802

    CPC分类号： B01D53/945 ,  B01D2255/908 ,  B01J23/58 ,  F01N3/0864 ,  F01N3/2828 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2370/00 ,  F02B1/04 ,  Y02T10/22

    摘要： A stable, close-coupled catalyst, an article comprising the close-coupled catalyst and a related method of operation. The close-coupled catalyst comprises a catalyst support and a palladium catalytic component. Preferably and optionally, there are stabilizers including alkaline metal oxide, and rare earth metal components selected from the neodymium and lanthanum components. The close-coupled catalyst composition includes substantially no additional oxygen storage component such as praseodymium or cerium compounds. There is preferably a catalyst such as a three-way catalyst downstream of the close-coupled catalyst. The downstream catalyst preferably includes an oxygen storage component such as cerium oxide or praseodymium oxide.

    摘要翻译： 稳定的紧密耦合的催化剂，包含紧密耦合催化剂的物品和相关的操作方法。 紧密耦合的催化剂包括催化剂载体和钯催化组分。 优选和任选地，存在稳定剂，包括碱金属氧化物和选自钕和镧组分的稀土金属组分。 紧密耦合的催化剂组合物基本上不含另外的储氧组分如镨或铈化合物。 优选催化剂，例如紧密耦合的催化剂下游的三元催化剂。 下游催化剂​​优选包括氧存储组分如氧化铈或氧化镨。