公开(公告)号：US20220023849A1

公开(公告)日：2022-01-27

申请号：US17309443

申请日：2019-12-06

Applicant: BASF SE ,  BASF CORPORATION

Inventor： Maximilian HEMGESBERG ,  Meik RANFT ,  Edith SCHNEIDER ,  Marko BUCHHOLZ ,  Maik SCHLESINGER ,  Denis SCHWALL ,  Yi LIU

IPC: B01J29/76 ,  B01J35/02 ,  B01J37/04 ,  B01J37/02 ,  F01N3/20 ,  F01N3/28 ,  B01D53/94

Abstract: An aqueous suspension comprising water, a zeolitic material and one or more of copper and iron, and a chelate complex comprising a zirconium ion and a bidentate organic ligand bonded to said zirconium ion via zirconium oxygen bonds from two oxygen atoms comprised in said ligand, said chelate complex being dissolved in the water.

公开(公告)号：US20180043336A1

公开(公告)日：2018-02-15

申请号：US15555142

申请日：2016-03-03

Applicant: BASF Corporation

Inventor： Gerd GRUBERT ,  Torsten NEUBAUER ,  Alfred PUNKE ,  Marcus HILGENDORFF ,  Marko BUCHHOLZ ,  Matthew CAUDLE

IPC: B01J23/46 ,  B01J37/08 ,  B01J35/00 ,  B01J37/02 ,  B01D53/94 ,  B01J23/10

CPC classification number: B01J23/464 ,  B01D53/9418 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2047 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/904 ,  B01D2255/91 ,  B01D2257/404 ,  B01D2258/012 ,  B01J21/04 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0036 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/038 ,  B01J37/08 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N2330/30

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.