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公开(公告)号:EP3229956A4
公开(公告)日:2018-06-27
申请号:EP15855461
申请日:2015-10-30
Applicant: BASF CORP
Inventor: MOHANAN JAYA L , YANG JEFF , BURK PATRICK , VOSS KENNETH E
IPC: B01J29/072 , B01D53/56 , B01D53/94 , B01J29/70
CPC classification number: B01J29/763 , B01D53/8628 , B01D53/9418 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9022 , B01D2255/9032 , B01D2255/9202 , B01D2257/404 , B01J29/80 , B01J35/0006 , B01J35/002 , B01J37/0244 , B01J37/0246 , B01J2229/186 , C01B39/48
Abstract: Described are compositions and catalytic articles comprising both a first molecular sieve promoted with copper and a second molecular sieve promoted with iron, the first and second molecular sieves having a d6r unit and the first molecular sieves having cubic shaped crystals with an average crystal size of about 0.5 to about 2 microns. The weight ratio of the copper-promoted molecular sieve to the iron-promoted molecular sieve can be about 1:1 to about 4:1. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.