Doped titanium dioxide

US6627173B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Ina Hemme · Hanau, DE
• Helmut Mangold · Rodenbach, DE
• Sven-Uwe Geissen · Clausthal-Zellerfeld, DE
• Anna Moiseev · Clausthal-Zellerfeld, DE

Key dates

• Filing date: Mar 27, 2001
• Grant date: Sep 30, 2003
• Expiry date: Aug 25, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2305/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the preparation of doped, pyrogenically prepared titanium dioxide is described. The titanium dioxide is doped with zinc oxide, platinum oxide, magnesium oxide, or aluminium oxide, by injecting an aerosol of the oxide into the production stream. The doped titanium dioxide may be used as a photocatalyst or UV absorber.