Patent · US Active

Palladium/zeolite-based passive nitrogen oxide adsorber catalyst for purifying exhaust gas

US11141717B2 · kind B2 · utility

0Cited by

29References

20Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Christoph Hengst · Rockenberg, DE
Frank-Walter Schuetze · Haibach, DE
Michael Lennartz · Frankfurt, DE

Key dates

Filing date	Aug 24, 2018
Grant date	Oct 12, 2021
Priority date	—
Expiry date	Aug 24, 2038

Classification

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

Abstract

The invention relates to a catalyst which comprises a carrier substrate, palladium, and a zeolite, the largest channels of which are formed by 10 tetradrically coordinated atoms; to the use of said catalyst as a passive nitrogen oxide adsorber, an exhaust gas system which contains said catalyst and an SCR catalyst, and to a method for purifying the exhaust gas of motor vehicles using said exhaust gas system.

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