Patent · US Expired

Monolithic carrier catalyst and arrangements of such a catalyst for the purification of exhaust gases from an internal combustion engine

US4118199A · kind A · utility

58Cited by

5References

9Claims

0Family size

Assignee

Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

Herbert Volker · Hanau, DE
Edgar Koberstein · Alzenau, DE
Jorg Hensel · Hanau, DE

Key dates

Filing date	Sep 17, 1976
Grant date	Oct 3, 1978
Priority date	—
Expiry date	Sep 17, 1996

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N13/0097
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a monolithic carrier catalyst containing a catalytically active substance for the purification of a stream of exhaust gases from an internal combustion engine, the improvement comprises providing an increasing concentration of catalytically active substance on the monolithic carrier catalyst, wherein the concentration increases in the direction of flow of the exhaust gases. The catalyst is particularly useful in oxidizing and/or reducing the noxious substances in automotive exhaust gases.

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