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...

Full description

Saved in:
Bibliographic Details
Main Authors SWALLOW, Daniel, CHANDLER, Guy Richard, PHILLIPS, Paul Richard, REID, Stuart David, STREHLAU, Wolfgang
Format Patent
LanguageEnglish
French
German
Published 10.07.2019
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
STEAM ENGINES
TRANSPORTING
WEAPONS
Online AccessGet full text

Cover

More Information
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.
Bibliography:Application Number: EP20170762180