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公开(公告)号:ES2618458T3
公开(公告)日:2017-06-21
申请号:ES13155783
申请日:2008-02-27
Applicant: BASF CORP
Inventor: BULL IVOR , XUE WEN-MEI , BOORSE SAMUEL , JAGLOWSKI W , KOERMER GERALD , MOINI AHMAD , PATCHETT JOSEPH , BURK PATRICK , DETTLING JOSEPH , CAUDLE MATTHEW
IPC: B01J29/072 , B01D53/00 , B01J29/76
Abstract: Procedimiento para la reducción de óxidos de nitrógeno contenidos en una corriente gaseosa en presencia de oxígeno en el que dicho procedimiento comprende poner en contacto la corriente gaseosa con un catalizador que comprende: una zeolita que tiene la estructura cristalina de tipo CHA y una razón molar de sílice con respecto a alúmina de desde 15 hasta 256 y una razón atómica de cobre con respecto a aluminio de desde 0,25 hasta 0,50.
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公开(公告)号:CA2978625A1
公开(公告)日:2016-09-09
申请号:CA2978625
申请日:2016-03-03
Applicant: BASF CORP
Inventor: GRUBERT GERD , NEUBAUER TORSTEN , PUNKE ALFRED H , HILGENDORFF MARCUS , CAUDLE MATTHEW , BUCHHOLZ MARKO
Abstract: A lean NOx trap composition for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO), and the trapping and reduction of nitrogen oxides (NOx) is disclosed. The lean NOx trap composition can have a washcoat layer on a carrier substrate including a first support material comprising greater than 50% by weight of a reducible metal oxide; 10 to 30% by weight of alkaline earth metal supported on a second support material comprising a refractory metal oxide and 50% or less by weight of a reducible metal oxide and; and a platinum group metal component supported on at least one of the first support material and/or the second support material. A portion of the first support material may further include 0.5 % to 10% by weight of an alkaline earth metal.
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