公开(公告)号：US11376569B2

公开(公告)日：2022-07-05

申请号：US16966319

申请日：2019-02-04

Applicant: BASF Corporation

Inventor： Thomas Schmitz ,  Attilio Siani ,  Stephan Siemund ,  Janosch Cravillon

IPC: B01J35/00 ,  B01J23/63 ,  B01D53/94 ,  B01J23/58 ,  B01J35/04 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  F01N3/10 ,  F01N3/28

Abstract: A four-way conversion catalyst for treating a gasoline engine exhaust gas has a porous wall flow filter substrate with an inlet end, outlet end, substrate axial length extending between the inlet and outlet end, and passages defined by porous internal walls of the substrate, the passages having inlet passages with an open inlet and closed outlet, and outlet passages having a closed inlet and open outlet. The internal wall pores have a three-way conversion catalytic in-wall coating with an oxygen storage compound and a platinum group metal supported on a refractory metal oxide. On at least a portion of the internal wall surface defining the interface between the internal walls and the passages, the catalyst has a porous on-wall coating from the internal wall surface to the passage. The coating has porous oxidic compound and platinum group metal content of 0 to 0.001 wt. %, of the total coating weight.

公开(公告)号：US09266092B2

公开(公告)日：2016-02-23

申请号：US14157865

申请日：2014-01-17

Applicant: BASF Corporation ,  BASF SE

Inventor： Mirko Arnold ,  Stefan Kotrel ,  Attilio Siani ,  Stephan Siemund ,  Thomas Schmitz ,  Burkhard Rabe ,  Gary A Gramiccioni ,  Oliver Seel ,  Torsten Neubauer ,  Knut Wassermann

IPC: B01D50/00 ,  B01D53/34 ,  F01N3/00 ,  F23J11/00 ,  B01D53/56 ,  B01D53/94 ,  B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J23/58 ,  B01J21/04 ,  B01J23/63 ,  B01J37/02 ,  F01N3/10 ,  B01J35/00 ,  B01J35/10

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2258/014 ,  B01J35/0006 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1061 ,  B01J37/0244 ,  B01J37/0248 ,  F01N3/101 ,  F01N2510/0684 ,  Y02A50/2324 ,  Y02T10/22

Abstract: Provided are catalyst composites whose catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. The catalyst composites have a two-metal layer on a carrier, the two-metal layer comprising a rhodium component supported by a first support comprising a refractory metal oxide component or a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the amount of the total of the first and second ceria-zirconia composites in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component. Methods of making and using the same are also provided.

Abstract translation: 提供催化剂复合材料，其催化材料有效地基本上同时氧化一氧化碳和碳氢化合物并还原氮氧化物。 催化剂复合材料在载体上具有双金属层，所述双金属层包含由包含难熔金属氧化物组分或第一氧化铈 - 氧化锆复合材料的第一载体负载的铑组分; 由包含第二氧化铈 - 氧化锆复合材料的第二载体负载的钯组分; 一种或多种促进剂，稳定剂或粘合剂; 其中所述二金属层中的所述第一和第二氧化铈 - 氧化锆复合材料的总量的量等于或大于所述难熔金属氧化物组分的量。 还提供了制备和使用它们的方法。