IMPROVED NOx TRAP
A NOx trap catalyst is disclosed. The NOx trap catalyst comprises a first layer, the first layer comprising a first ceria-containing component having a surface area of less than 80 m2/g; a Ba/Ce/magnesium-aluminate spinel; platinum; palladium; and alumina; and a second layer, the second layer compri...
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Main Authors | , , , , |
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Format | Patent |
Language | English French German |
Published |
10.07.2019
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Subjects | |
Online Access | Get full text |
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Summary: | A NOx trap catalyst is disclosed. The NOx trap catalyst comprises a first layer, the first layer comprising a first ceria-containing component having a surface area of less than 80 m2/g; a Ba/Ce/magnesium-aluminate spinel; platinum; palladium; and alumina; and a second layer, the second layer comprising a second ceria-containing component having a higher surface area than the first ceria-containing material present in the first layer; rhodium; and alumina.The invention also includes an exhaust system comprising the NOx trap catalyst, and a method for treating exhaust gas utilizing the NOx trap catalyst. |
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Bibliography: | Application Number: EP20170762180 |