Huntsman P&a Germany Gmbh

Venator Germany Gmbh

Tobias Thiede

Sonja Grothe

A powdered catalyst material on a titanium oxide basis. The powdered catalyst material includes a combined content of at least 90 wt.-% of a hydrated titanium oxide having the general formula TiO(OH), with 0&#x3c;x&#x2264;1, (calculated as TiO), and a silicon dioxide and hydrated precursors of the silicon dioxide (calculated as SiO). A weight ratio of TiO/SiO, determined for TiOand SiOrespectively, is at least 3 and less than 30. The wt.-% is based on a total weight of the catalyst material after the catalyst material has been dried at 105&#xb0; C. for at least 2 hours. The powdered catalyst material has a specific surface area of &#x3e;300 m/g and an isoelectric point of from 4.0 to 7.0.

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Herne, Germany

Tobias Thiede