Patent · US Expired

Process for the reduction of nitrogen oxides from exhaust gases

US4910005A · kind A · utility

3Cited by

2References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hans-Hermann Heins · Leverkusen, DE
Siegfried Gruhl
Klaus Holzer · Leverkusen, DE
Michael Bueb · Leverkusen, DE

Key dates

Filing date	Feb 16, 1989
Grant date	Mar 20, 1990
Priority date	—
Expiry date	Feb 16, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J23/8472
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for the reduction of nitrogen oxides contained in exhaust gases comprising reacting the gases with a reducing agent in the presence of a catalyst, the catalyst being based on carbon and having a carbon content greater than 65% by weight and containing 0.1 to 10% by weight of a sparingly soluble oxide of one or more metal selected from the group consisting of Co, Fe, Ni, Cr, V, Mo, W, Cu, Mn and Ti and having a nitrogen content of from 0.5 to 5% by weight, wherein the molar ratio of the reducing agent to the nitrogen oxide is 0.3 to 0.7.

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