Patent · US Active

Three-zone diesel oxidation catlayst

US10767528B2 · kind B2 · utility

4Cited by

13References

14Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Christoph Hengst · Rockenberg, DE
Franz Dornhaus · Scheinfeld, DE
Michael Schiffer · Hanau, DE

Key dates

Filing date	May 2, 2017
Grant date	Sep 8, 2020
Priority date	—
Expiry date	Jun 12, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2510/0684
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a diesel oxidation catalyst which has a support body with a length L extending between a first end face a and a second end face b and catalytically active material zones A, B, and C arranged on the support body, wherein—material zone A contains palladium or platinum and palladium in a weight ratio of Pt:Pd of ≤1 and an alkaline earth metal and extends over 20 to 80% of the length L starting from the end face a, material zone B contains ceroxide, is free of platinum, and extends over 20 to 80% of the length L starting from the end face b, material zone C contains platinum or platinum and palladium in a weight ratio of Pt:Pd of ≥5, and neither material zone A nor material zone C is arranged over material zone B.

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