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    • 2. 发明授权
    • Layered catalyst composite
    • 层状催化剂复合材料
    • US5597771A
    • 1997-01-28
    • US265076
    • 1994-06-24
    • Zhicheng HuChung-Zong WanYiu-Kwan LuiJoseph C. Dettling
    • Zhicheng HuChung-Zong WanYiu-Kwan LuiJoseph C. Dettling
    • B01D53/86B01D53/94B01J23/44B01J23/46B01J23/63B01J23/89B01J35/00B01J37/02F01N3/10F01N3/28B01J21/04B01J23/02
    • B01D53/945B01J23/63B01J35/0006B01J37/0244B01D2255/902F01N2570/16Y02T10/22
    • The present invention relates to a layered catalyst composite of the type generally referred to as a three-way conversion catalyst having the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. The structure of the layered catalyst composite of the present invention is designed wherein there is a first layer and a second layer. The first layer comprises a first support; at least one first palladium component and an oxygen storage component in intimate contact with the palladium component; optionally another first platinum group metal component; a zirconium component; at least one first alkaline earth metal components and at least one first rare earth metal component selected from the group consisting of lanthanum metal components and neodymium metal components. The second layer comprises a second support; at least one second palladium component; optionally another second platinum group metal component; at least one second alkaline earth metal component; at least one second rare earth component selected from the group consisting of lanthanum metal components and neodymium metal components and a zirconium component.
    • 本发明涉及一种通常称为三元转化催化剂的层状催化剂复合物,其具有基本上同时催化烃和一氧化碳的氧化和还原氮氧化物的能力。 设计本发明的层状催化剂复合材料的结构,其中存在第一层和第二层。 第一层包括第一载体; 至少一种第一钯组分和与钯组分紧密接触的储氧组分; 另外的第一铂族金属组分; 锆组分; 至少一种第一碱土金属组分和至少一种选自镧金属组分和钕金属组分的第一稀土金属组分。 第二层包括第二支撑件; 至少一个第二钯组分; 另一种第二铂族金属组分; 至少一种第二碱土金属组分; 选自由镧金属成分和钕金属成分组成的组中的至少一种稀土类成分和锆成分。
    • 4. 发明授权
    • Palladium containing ceria-supported platinum catalyst and catalyst
assembly including the same
    • 含有二氧化铈载体的铂催化剂和包含其的催化剂组合物
    • US5128306A
    • 1992-07-07
    • US541452
    • 1990-06-21
    • Joseph C. DettlingYiu-Kwan Lui
    • Joseph C. DettlingYiu-Kwan Lui
    • F01N3/28B01D53/86B01D53/94B01J23/56B01J23/63
    • B01D53/945B01J23/63B01D2255/902Y02T10/22
    • A catalyst composition includes a catalytic material containing a platinum catalytic component dispersed on a bulk ceria and a palladium catalytic component; the palladium catalytic component may be dispersed either on the ceria or on another support, such as an activated alumina support. The catalytic material, which may include a refractory binder, such as alumina, may be dispersed as a washcoat on a suitable carrier, e.g., a cordierite honeycomb-type carrier having a plurality of fine gas flow passages extending therethrough. The bulk ceria may be stabilized with a zirconia stabilizer and/or a lanthana stabilizer. The catalyst composition has utility as an oxidation catalyst and as a three-way conversion catalyst. In the latter case, its activity for the reduction of nitrogen oxides may optionally be supplemented either by adding a rhodium-containing catalytic overcoat or by providing a catalyst assembly in which the above-described catalyst composition is placed in series with any suitable nitrogen oxides reduction catalyst.
    • 催化剂组合物包括含有分散在本体二氧化铈上的铂催化组分和钯催化组分的催化材料; 钯催化组分可以分散在二氧化铈上或另一种载体上,例如活性氧化铝载体上。 可以包括耐火粘合剂如氧化铝的催化材料可以作为修补基面涂层分散在合适的载体上,例如具有延伸穿过其中的多个精细气体流动通道的堇青石蜂窝状载体。 本体二氧化铈可以用氧化锆稳定剂和/或氧化镧稳定剂稳定。 催化剂组合物可用作氧化催化剂和作为三元转化催化剂。 在后一种情况下,其还原氮氧化物的活性可以任选地通过加入含铑催化外涂层或提供催化剂组合物来补充,其中上述催化剂组合物与任何合适的氮氧化物还原 催化剂。
    • 10. 发明授权
    • Layered catalyst composition
    • 层状催化剂组成
    • US5422331A
    • 1995-06-06
    • US202397
    • 1994-02-25
    • Michael P. GalliganJoseph C. Dettling
    • Michael P. GalliganJoseph C. Dettling
    • B01D53/86B01J23/656B01J37/02B01J23/34B01J23/44
    • B01D53/864B01D53/8675B01J23/6562B01J37/0225B01J37/0244B64D2013/0651B64D2013/0685
    • A catalyst composition contains a catalytic material having having an undercoat layer containing a mixture of a fine particulate undercoat refractory metal oxide and a sol such as a silica sol, the undercoat providing good adherence to substrates, such as metal substrates, on which the catalytic material is disposed. An overlayer is coated over the underlayer and contains an overlayer refractory metal oxide, which may be the same as or different from the undercoat refractory metal oxide, and on which is dispersed one or more catalytic metal components, such as palladium and manganese components. The metal substrate may be made of, e.g., aluminum or titanium or alloys thereof, and provides a low pressure drop and lightweight catalyst, making the catalyst especially well adapted for use in aircraft to abate ozone in cabin air. A method of making the catalyst composition includes applying the undercoat to the substrate and calcining it, impregnating the overlayer refractory metal oxide with one or more catalytic metal components and depositing the overlayer over the undercoat, and calcining it.
    • 催化剂组合物含有具有含有细颗粒底层难熔金属氧化物和溶胶如二氧化硅溶胶的混合物的底涂层的催化剂材料,底涂层对基材例如金属基材提供良好的粘附性,其上催化材料 被处置。 覆盖层涂覆在下层上,并且包含覆盖层难熔金属氧化物,其可以与底层难熔金属氧化物相同或不同,并且在其上分散一种或多种催化金属组分,例如钯和锰组分。 金属基底可以由例如铝或钛或其合金制成,并且提供低压降和轻质的催化剂,使得催化剂特别适用于飞机中以减轻机舱空气中的臭氧。 制备催化剂组合物的方法包括将底涂层施涂到基材上并煅烧,用一种或多种催化金属组分浸渍覆层难熔金属氧化物,并将覆盖层沉积在底涂层上并煅烧。