Patent · US Active

Double-layer three-way catalyst with further improved ageing stability

US12296298B2 · kind B2 · utility

0Cited by

6References

11Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Joel Despres · Rodenbach, DE
Martin Roesch · Rodgau, DE
Joerg-Michael Richter · Scheinfeld, DE
Carolin Braun · Langen, DE
Marcus Schmidt · Maumee, US
Nicole Schichtel · Rockenberg, DE

Key dates

Filing date	Jan 26, 2021
Grant date	May 13, 2025
Priority date	—
Expiry date	Dec 31, 2041

Classification

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

Abstract

The present invention relates to a catalyst comprising two layers on an inert catalyst carrier, a layer A containing at least palladium as a platinum group metal, in addition to a cerium/zirconium/lanthanum/yttrium mixed oxide, and a layer B, which is applied to layer A, containing at least rhodium as the platinum group metal, in addition to a cerium/zirconium/lanthanum/yttrium mixed oxide.

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