公开(公告)号：US10413886B2

公开(公告)日：2019-09-17

申请号：US15544091

申请日：2016-01-15

申请人： UMICORE AG & CO. KG

发明人： Joel Despres ,  Joerg-Michael Richter ,  Martin Roesch ,  Nicole Schichtel ,  Marcus Schmidt ,  Jan Schoenhaber ,  Stephanie Spiess ,  Anke Wolf

IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J23/63 ,  B01J21/06 ,  B01J35/00 ,  B01J37/02 ,  B01D53/94 ,  B01J23/46

摘要： The present invention relates to a catalyst comprising two layers on an inert catalyst carrier, wherein a layer A lying directly on the catalyst carrier contains at least one platinum group metal and one cerium/zirconium/SE mixed oxide, and a layer B, applied on layer A and in direct contact with the flow of exhaust gas, contains at least one platinum group metal and a cerium/zirconium/SE mixed oxide, wherein SE stands for a rare earth metal other than from cerium, characterized in that the fraction of SE oxide in the cerium/zirconium/SE mixed oxide of layer A is less than the fraction of SE oxide in the cerium/zirconium/SE mixed oxide of layer B.

公开(公告)号：US20150125371A1

公开(公告)日：2015-05-07

申请号：US14405778

申请日：2013-06-05

申请人： Umicore AG & CO. KG

发明人： Marcus Schmidt ,  Joel Despres ,  Martin Roesch ,  Raoul Klingmann ,  Joerg-Michael Richter

IPC分类号： B01D53/94

CPC分类号： B01D53/945 ,  B01D53/9454 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/014 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/0073 ,  B01J35/04 ,  B01J37/0244 ,  F01N3/0864 ,  F01N3/101 ,  F01N13/0093 ,  F01N2510/0684 ,  Y02A50/2324 ,  Y02T10/22

摘要： The present invention describes a three-way-catalyst system comprising a first three-way catalyst on an inert catalyst support which is a double-layer catalyst comprising a first layer on the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium and being free of cerium and cerium containing materials and a second three-way-catalyst located upstream of the first three-way catalyst.

摘要翻译： 本发明描述了一种三元催化剂体系，其包括在惰性催化剂载体上的第一三元催化剂，其为包含活性氧化铝，铈/锆混合氧化物的双层催化剂，其包含第一层 钯和第二层施加到第一层并与要净化的废气直接接触，包括活性氧化铝和铑，并且不含铈和铈的材料，以及位于第一层的上游的第二三元催化剂 三元催化剂。

公开(公告)号：US09522360B2

公开(公告)日：2016-12-20

申请号：US14405778

申请日：2013-06-05

申请人： Umicore AG & CO. KG

发明人： Marcus Schmidt ,  Joel Despres ,  Martin Roesch ,  Raoul Klingmann ,  Joerg-Michael Richter

IPC分类号： B01D50/00 ,  B01D53/56 ,  B01D53/94 ,  B01J8/02 ,  B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J21/04 ,  B01J37/02 ,  B01J35/00 ,  B01J23/63 ,  B01J35/04 ,  F01N3/10 ,  F01N3/08 ,  F01N13/00

CPC分类号： B01D53/945 ,  B01D53/9454 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/014 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/0073 ,  B01J35/04 ,  B01J37/0244 ,  F01N3/0864 ,  F01N3/101 ,  F01N13/0093 ,  F01N2510/0684 ,  Y02A50/2324 ,  Y02T10/22

摘要： The present invention describes a three-way-catalyst system comprising a first three-way catalyst on an inert catalyst support which is a double-layer catalyst comprising a first layer on the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium and being free of cerium and cerium containing materials and a second three-way-catalyst located upstream of the first three-way catalyst.

摘要翻译： 本发明描述了一种三元催化剂体系，其包括在惰性催化剂载体上的第一三元催化剂，其为包含活性氧化铝，铈/锆混合氧化物的双层催化剂，其包含第一层 钯和第二层施加到第一层并与要净化的废气直接接触，包括活性氧化铝和铑，并且不含铈和铈的材料，以及位于第一层的上游的第二三元催化剂 三元催化剂。

公开(公告)号：US10022672B2

公开(公告)日：2018-07-17

申请号：US15124481

申请日：2015-03-11

申请人： UMICORE AG & CO. KG

发明人： Jan Schoenhaber ,  Marcus Schmidt ,  Frank Adam

IPC分类号： B01D53/94 ,  F01N3/08 ,  F01N3/10 ,  B01J23/46 ,  B01J23/44 ,  F01N3/20 ,  F01N13/00

摘要： The present invention is directed to a catalyst system for the reduction of the harmful exhaust-gas constituents hydrocarbons (THC), carbon monoxide (CO), nitrogen oxides (NOx), and the environmentally detrimental secondary emissions ammonia (NH3) and nitrous oxide (N2O) of combustion engines operated using gasoline and to a corresponding method for exhaust-gas purification. The system is characterized by a particular arrangement of catalysts and is used in the case of engines which are operated with predominantly, on average, stoichiometric air/fuel mixtures. Here, a three-way catalyst produced in accordance with the current prior art is preferably installed in a close-coupled position. In the underfloor position, there is situated an SCR catalyst produced in accordance with the current prior art, followed by a further three-way catalyst produced in accordance with the current prior art. The three-way catalyst in the underfloor region furthermore has a lower oxygen-storing capacity than the close-coupled three-way catalyst.