公开(公告)号：US10919025B2

公开(公告)日：2021-02-16

申请号：US16751841

申请日：2020-01-24

Applicant: BASF CORPORATION

Inventor： Yuejin Li ,  Shiang Sung ,  Stanley D. Roth ,  Torsten Neubauer ,  Susanne Stiebels

IPC: B01J23/46 ,  B01J23/42 ,  B01J23/44 ,  B01J23/52 ,  B01J23/50 ,  B01J23/34 ,  B01J23/745 ,  B01J23/72 ,  B01J23/14 ,  B01J23/75 ,  B01J23/755 ,  B01J23/89 ,  B01J23/10 ,  B01J21/04 ,  B01J21/08 ,  B01J35/10 ,  B01D53/94

Abstract: A nitrous oxide (N2O) removal catalyst composition for treating an exhaust stream of an internal combustion engine is provided, containing a platinum group metal (PGM) component on a metal oxide-based support, wherein the N2O removal catalyst composition is in a substantially reduced form, such that it has an oxygen deficiency of about 0.05 mmol oxygen atoms/g or greater, and wherein the N2O removal catalyst composition provides effective removal of at least a portion of N2O from the exhaust stream under lean conditions at a temperature of about 350° C. or lower. N2O removal catalytic articles, systems, and methods are also provided for removing at least a portion of N2O from an exhaust stream under lean, low temperature conditions.