Doped titanium oxides

US6992042B2 · 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: May 12, 2003
• Grant date: Jan 31, 2006
• Expiry date: Aug 29, 2023

Classification

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

Abstract

Pyrogenically prepared titanium dioxide doped by means of an aerosol contains an oxide from the group zinc oxide, platinum oxide, magnesium oxide and/or aluminium oxide as the doping component. It is prepared as follows: in the pyrogenic preparation of titanium dioxide, a metal salt solution is atomised to form an aerosol and injected into the production stream. The titanium dioxide may be used as a photocatalyst or as a UV adsorber or in processes for purification of waste water or waste air/gases.