Patent · US Expired

Process for simultaneously reducing the amounts of hydrocarbons, carbon monoxide and nitrogen oxides contained in the exhaust gas from an internal combustion engine

US5643542A · kind A · utility

21Cited by

10References

16Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Juergen Leyrer · Alzenau, DE
Rainer Domesle · Alzenau, DE
Egbert Lox · Hanau, DE
Klaus Ostgathe · Hattersheim, DE

Key dates

Filing date	Oct 12, 1995
Grant date	Jul 1, 1997
Priority date	—
Expiry date	Oct 12, 2015

Classification

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

Abstract

A process for simultaneously reducing the amounts of hydrocarbons, carbon monoxide and nitrogen oxides contained in the exhaust gas from an internal combustion engine in the exhaust gas from gasoline or diesel engines with high amounts of oxygen in the exhaust gas is disclosed. A high reductive effect towards nitrogen oxides is enabled by using a homogeneous aluminum silicate as a high surface area support material for the catalytically active components.

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