Patent · US Active

NOx adsorber catalyst, methods and systems

US10493434B2 · kind B2 · utility

4Cited by

33References

29Claims

0Family size

Assignee

BASF SE

Inventors

Gerd Grubert · Hannover, DE
Torsten Neubauer · Langenhagen, DE
Alfred Punke · Walle, DE
Marcus Hilgendorff · Hannover, DE
Yuejin Li · Edison, US

Key dates

Filing date	Mar 3, 2016
Grant date	Dec 3, 2019
Priority date	—
Expiry date	Mar 3, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A lean burn engine exhaust treatment articles comprising a low temperature lean NOx trap (LT-LNT) composition and methods for their use is disclosed. A lean burn engine exhaust gas treatment system including the lean burn engine exhaust treatment articles is also disclosed. The low temperature lean NOx trap (LT-LNT) compositions can comprise a washcoat layer on a carrier substrate, the washcoat layer including a platinum group metal component impregnated on a first support material comprising at least 50% alumina. The washcoat layer may further include a low temperature NOx storage material comprising a bulk particulate reducible metal oxide. Methods of monitoring the aging state of a lean burn oxidation catalyst in a lean burn engine catalyst system are also disclosed.

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