Zoned configuration for oxidation catalyst combinations

    公开(公告)号:US10744459B2

    公开(公告)日:2020-08-18

    申请号:US16170406

    申请日:2018-10-25

    申请人: BASF CORPORATION

    发明人: Jeffrey B. Hoke

    摘要: The present disclosure generally provides an emission treatment system for at least partial conversion of gaseous CO emissions. The exhaust gas treatment system includes various components such as a first catalyst component selected from a LNT or an oxidation catalyst for the abatement of HC and CO, which contains a catalyst composition such as a platinum group metal component impregnated into a refractory oxide material. Another component in the exhaust gas treatment system is an SCR catalyst for the abatement of NOx, which contains a catalyst composition such as a metal ion-exchanged molecular sieve and can be optionally absent when the first catalyst component is an LNT. A second oxidation catalyst for further abatement of CO is also part of the emission treatment system and includes a third catalyst composition selected from a platinum group metal component, a base metal oxide component, or combinations thereof disposed onto a carrier substrate.

    Catalyst compositions, catalytic articles, systems and processes using protected molecular sieves
    4.
    发明授权
    Catalyst compositions, catalytic articles, systems and processes using protected molecular sieves 有权
    使用保护的分子筛的催化剂组合物,催化剂,系统和方法

    公开(公告)号:US08980209B2

    公开(公告)日:2015-03-17

    申请号:US14104731

    申请日:2013-12-12

    申请人: BASF Corporation

    摘要: Described are catalyst compositions, catalytic articles, methods of manufacturing catalytic articles and exhaust gas treatment systems and methods that utilize the catalytic articles. The catalyst composition comprises an oxidation catalyst comprising a washcoat layer including a platinum group metal supported on a refractory metal oxide support and porous molecular sieve particles having internal pores, the molecular sieve particles protected by a protecting material selected from an organic wax encapsulating the molecular sieve particles, a polymer encapsulating the molecular sieve particles, an inorganic oxide deposited on the surface of the molecular sieve particles, or an organic compound filling the internal pores of the molecular sieve particles, wherein the protecting material prevents interaction of the molecular sieve particles with the platinum group metal.

    摘要翻译: 描述了催化剂组合物,催化剂制品,催化制品的制造方法和排气处理系统以及利用催化制品的方法。 催化剂组合物包含氧化催化剂,其包含负载在难熔金属氧化物载体上的铂族金属和具有内部孔的多孔分子筛颗粒的修补基面涂层,所述分子筛颗粒由选自包封分子筛的有机蜡保护的材料保护 颗粒,包封分子筛颗粒的聚合物,沉积在分子筛颗粒表面上的无机氧化物或填充分子筛颗粒内孔的有机化合物,其中保护材料防止分子筛颗粒与 铂族金属。

    CATALYST COMBINING PLATINUM GROUP METAL WITH COPPER-ALUMINA SPINEL

    公开(公告)号:US20200001280A1

    公开(公告)日:2020-01-02

    申请号:US16561725

    申请日:2019-09-05

    申请人: BASF Corporation

    摘要: An oxidation catalyst composition is provided, the composition including at least one platinum group metal impregnated onto a porous alumina material, wherein the porous alumina material comprises a copper-alumina spinel phase. At least a portion of the copper-alumina spinel phase can be proximal to, or in direct contact with, at least one platinum group metal crystallite, such as a crystallite having a size of about 1 nm or greater. The close proximity of the copper-alumina spinel phase to the platinum group metal crystallite is believed to provide synergistic enhancement of carbon monoxide oxidation. Methods of making and using the catalyst composition are also provided, as well as emission treatment systems comprising a catalyst article coated with the catalyst composition.