Patent · US Active

Three-way conversion catalyst in gasoline-natural gas applications

US12005426B2 · kind B2 · utility

0Cited by

28References

15Claims

0Family size

Assignee

BASF SE

Inventors

Karifala Dumbuya · Hannover, DE
Thomas Schmitz · Wesseling, DE
Florian Waltz · Hannover, DE
Stephan Siemund · Pattensen, DE

Key dates

Filing date	Sep 12, 2019
Grant date	Jun 11, 2024
Priority date	—
Expiry date	Jun 18, 2041

Classification

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

Abstract

The disclosure relates to a three-way conversion catalyst for the treatment of an exhaust gas comprising nitrogen monoxide, carbon monoxide, and hydrocarbon, wherein the catalyst comprises: (i) a substrate; (ii) a first coating comprising rhodium supported on a first oxidic component; (iii) a second coating comprising palladium supported on a non-zeolitic oxidic material, wherein the non-zeolitic oxidic material comprises manganese and a second oxidic component, wherein the second coating consists of 0 weight-% to 0.001 weight-% of platinum; wherein the first coating is disposed on the substrate over x % of the axial length, with x ranging from 80 to 100; wherein the second coating extends over y % of the axial length from the inlet end to the outlet end and is disposed on the first coating, with y ranging from 20 to x.

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