Catalyst material for reducing the nitrogen oxides in flue gases

US4849392A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Erich Hums · Prüm, DE
• Dietmar Hein · Nuremberg, DE
• Helmut Schmelz · Prien am Chiemsee, DE

Key dates

• Filing date: Mar 4, 1987
• Grant date: Jul 18, 1989
• Expiry date: Mar 4, 2007

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J37/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalyst material for nitrogen oxide reduction in flue gases in the presence of ammonia, comprising hydrothermal titanium dioxide and the additives of vanadium oxide and one or more oxides of the elements tungsten, phosphorus, sulfur, chromium, zirconium, magnesium, copper, cobalt, iron, and uranium, which hydrothermal titanium dioxide and additives material is activated by grinding.