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.

公开(公告)号：CA3032554A1

公开(公告)日：2018-02-08

申请号：CA3032554

申请日：2017-08-04

Applicant: BASF CORP

Inventor： XUE WEN-MEI ,  YANG JEFF ,  ROTH STANLEY ,  VOSS KENNETH E ,  SHAH SANDIP ,  MOHANAN JAYA L ,  FU QI ,  PRASAD SUBRAMANIAN ,  SLAWSKI BARBARA

IPC: C01B39/02 ,  B01J29/072 ,  B01J29/70 ,  B01J35/04 ,  B01J37/02 ,  F01N3/20

Abstract: Certain selective catalytic reduction (SCR) articles, systems and methods provide for high NOx conversion while at the same time low N2O formation. The articles, systems and methods are suitable for instance for the treatment of exhaust gas of diesel engines. Certain articles have zoned coatings disposed thereon, for example, a zoned coating comprising an upstream zone comprising a coating layer comprising a steam-activated iron-containing molecular sieve and a downstream zone comprising a coating layer comprising a high copper-containing molecular sieve.

公开(公告)号：ZA201703525B

公开(公告)日：2021-07-28

申请号：ZA201703525

申请日：2017-05-23

Applicant: BASF CORP

Inventor： MOHANAN JAYA L ,  YANG JEFF ,  BURK PATRICK ,  VOSS KENNETH E

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.

公开(公告)号：CA2965962A1

公开(公告)日：2016-05-06

申请号：CA2965962

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

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.

公开(公告)号：CA2965962C

公开(公告)日：2022-11-08

申请号：CA2965962

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

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.

公开(公告)号：CA3032587A1

公开(公告)日：2018-02-08

申请号：CA3032587

申请日：2017-08-04

Applicant: BASF CORP

Inventor： XUE WEN-MEI ,  YANG JEFF ,  ROTH STANLEY ,  VOSS KENNETH E ,  SHAH SANDIP ,  MOHANAN JAYA L

IPC: B01J37/02 ,  B01J29/072 ,  B01J29/76 ,  B01J35/04 ,  F01N3/20

Abstract: Certain selective catalytic reduction (SCR) articles, systems and methods provide for high NOx conversion while at the same time low N2O formation. The articles, systems and methods are suitable for instance for the treatment of exhaust gas of diesel engines. Certain articles have zoned coatings containing copper-containing molecular sieves disposed thereon, where for example a concentration of catalytic copper in an upstream zone is lower than the concentration of catalytic copper in a downstream zone.