公开(公告)号：US20230129815A1

公开(公告)日：2023-04-27

申请号：US17906265

申请日：2021-03-30

申请人： BASF CORPORATION

发明人： Edgar Viktor HUENNEKES ,  Nicholas MCGUIRE ,  Petra CORDES ,  Kevin BEARD ,  Jan Martin BECKER ,  John K HOCHMUTH ,  Kenneth E VOSS ,  Joseph A PATCHETT ,  Andreas R MUNDING

IPC分类号： B01D53/94 ,  B01J29/72 ,  B01J37/02

摘要： The present invention relates to a process for preparing a catalyst for the selective catalytic reduction of nitrogen oxide comprising, among other steps, preparing a second aqueous mixture comprising water and an iron salt; and disposing the second mixture on the substrate obtained according to (ii), comprising a coating comprising a zeolitic material comprising copper, over y % of the substrate axial length from the inlet end to the outlet end of the substrate, wherein y is in the range of from 10 to x, obtaining a substrate comprising, in a first zone, the coating comprising a zeolitic material comprising copper and over y % of the substrate axial length an iron salt; and, if x > y, in a second zone extending from y % to x % of the substrate axial length from the inlet end to the outlet end, the coating comprising a zeolitic material comprising copper.

公开(公告)号：US20230141207A1

公开(公告)日：2023-05-11

申请号：US17907554

申请日：2021-03-31

申请人： BASF CORPORATION

发明人： Edgar Viktor HUENNEKES ,  Petra CORDES ,  Jan Martin BECKER ,  Kevin BEARD ,  Nicholas MCGUIRE ,  Jaya L LAKSHMI ,  John K HOCHMUTH ,  Joseph A PATCHETT ,  Kenneth E VOSS

IPC分类号： B01J29/76 ,  B01J29/80 ,  B01J21/08 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08 ,  B01J37/04 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28 ,  F01N3/035

CPC分类号： B01J29/7615 ,  B01D53/9418 ,  B01D53/9472 ,  B01J21/08 ,  B01J29/80 ,  B01J35/04 ,  B01J35/0006 ,  B01J37/04 ,  B01J37/088 ,  B01J37/0228 ,  B01J37/0236 ,  B01J37/0246 ,  F01N3/035 ,  F01N3/2066 ,  F01N3/2828 ,  B01J2029/062

摘要： The present invention relates to a catalyst for the selective catalytic reduction of nitrogen oxide, the catalyst comprising a first coating comprising a 12-membered ring pore zeolitic material comprising a first metal which is one or more of copper and iron, and a second coating comprising an 8-membered ring pore zeolitic material comprising a second metal which is one or more of copper and iron.

公开(公告)号：US20210362130A1

公开(公告)日：2021-11-25

申请号：US16973325

申请日：2019-07-30

申请人： BASF Corporation

发明人： Edgar Viktor HUENNEKES ,  Joseph A PATCHETT ,  Petra CORDES ,  Kevin David BEARD ,  Jan Martin BECKER

IPC分类号： B01J23/22 ,  B01J21/06 ,  F01N3/20 ,  B01J37/02 ,  B01J35/04 ,  B01J35/10 ,  F01N3/28 ,  B01J23/847

摘要： The present invention relates to a selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine comprising (i) a flow-through substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the flow-through substrate extending therethrough; (II) a coating disposed on the surface of the internal walls of the substrate, where-in the surface defines the interface between the passages and the internal walls, wherein the coating comprises a vanadium oxide supported on an oxidic material comprising titania, and further comprises a mixed oxide of vanadium and one or more of iron, erbium, bismuth, cerium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium, yttrium, molybdenum, tungsten, manganese, cobalt, nickel, copper, aluminum and antimony.