Patent · US Expired

PROCESS FOR PRODUCING A CATALYTICALLY ACTIVE MATERIAL, CATALYTIC CONVERTER HAVING A CATALYTICALLY ACTIVE MATERIAL PRODUCED IN THIS MANNER, AND USE OF THE CATALYTIC CONVERTER TO BREAK DOWN DIOXINS AND/OR FURANS

US6475952B2 · kind B2 · utility

1Cited by

6References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Stefan Fischer · Lichtenfels, DE
Gunther Pajonk · Zapfendorf, DE
Frank Witzel · Saratoga Springs, US

Key dates

Filing date	Nov 7, 2001
Grant date	Nov 5, 2002
Priority date	—
Expiry date	Nov 7, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J37/0009
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

To produce a catalytically active material, titanium dioxide, together with an oxide or with a dissolved compound of tungsten and/or vanadium, is processed into a shapeable material. the shapeable material is dried to form a shaped body, and the shaped body is calcined. After the calcining, the shaped body is additionally impregnated with a dissolved compound of titanium and vanadium and is dried again. A catalytically active material of this type has a high catalytic activity with regard to breaking down dioxins and/or furans even in a temperature range of below 250° C. The catalytically active material is particularly suitable for producing dioxin and/or furan catalytic converters.

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