公开(公告)号：EP1732992A1

公开(公告)日：2006-12-20

申请号：EP05769797.1

申请日：2005-04-06

申请人： KRONOS INTERNATIONAL, INC.

发明人： ORTH-GERBER, Jürgen ,  KISCH, Horst ,  SAKTHIVEL, Shanmugasundaram

IPC分类号： C09C1/36 ,  C01G23/047 ,  B01J21/06 ,  B01J35/00

CPC分类号： B82Y30/00 ,  B01J21/063 ,  B01J35/0033 ,  B01J35/004 ,  C01G23/047 ,  C01P2002/30 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/86 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C02F1/283 ,  C02F1/32 ,  C02F1/725 ,  C02F2305/10 ,  C09C1/3669 ,  Y10T428/249921

摘要： A highly effective photocatalyst active in daylight and based on carbon-modified titanium dioxide (vlp-TiO2) is disclosed, as well as a process for producing the same. The vlp-TiO2 is produced by mixing a finely divided titanium compound (BET ≥ 50 m2/g) with a carbon-containing substance, then by thermally treating it at temperatures of up to 400 °C. The carbon content ranges from 0.05 to 4 % by weight, preferably from 0.4 to 0.8 % by weight. The product is characterised by an only insignificant ESR signal in a g value range from 1.97 to 2.05, at about 2003. The claimed photocatalyst is suitable for the mineralisation (oxidation) of impurities and pollutants in liquids and gasses.