Patent · US Active

N2O removal from automotive exhaust for lean/rich systems

US10919025B2 · kind B2 · utility

18Cited by

6References

27Claims

0Family size

Assignee

BASF SE

Inventors

Yuejin Li · Edison, US
Shiang Sung · New York, US
Stanley Roth · Yardley, US
Torsten Neubauer · Langenhagen, DE
Susanne Stiebels · Adenbüttel, DE

Key dates

Filing date	Jan 24, 2020
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Jan 24, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/10
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.