Patent · US Expired

Process for the production of catalysts for the reduction of nitrogen oxides from exhaust gases and similar chemical air cleaning processes

US4806427A · kind A · utility

13Cited by

4References

21Claims

0Family size

Assignee

Didier-Werke AG · DE

Inventors

Hermann Stein · Taunusstein, DE
Hartmut Kainer · Wiesbaden, DE
Daniel Grimm · Schlangenbad, DE

Key dates

Filing date	Sep 4, 1987
Grant date	Feb 21, 1989
Priority date	—
Expiry date	Sep 4, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J37/0217
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a process for the production of catalysts for the reduction of nitrogen oxides from exhaust gases and similar chemical air cleaning processes, in which a catalytically active material is deposited and bonded on a carrier made of metal, preferably stainless steel. The carrier is preferably in the form of a perforated metal plate, or of rib mesh, or a grid, preferably fabric, honeycombed or knitted material made of metal wire, or a similar material with a high specific surface. To simplify manufacturing and to improve the characteristics of the catalysts, the invention proposes the use of an acid which etches the surface of the metal carrier as the binder for the catalytically active material.

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