Sachtleben Chemie Gmbh

Sonja Weyand

Bernd Proft

Elke Hirschberg

Barbara Seling

Ulrich Gesenhues

A process for the preparation of a TiO-containing catalyst or catalyst support which is stable to high temperatures is described. In this process Alternatively, the TiO-containing catalysts or catalyst supports which are stable to high temperatures can be prepared by a process in which 1. hydrated precursors of one or more metal oxides or semi-metal oxides and 2. hydrated titanium oxide are rapidly precipitated from aqueous solution.

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The bodies are prepared either by pelleting of a pasty mixture of titanium dioxide powder and titanium dioxide sol and/or 1-20% nitric acid, followed by dehydration and calcination at a temperature of between 400 and 1000&deg; C. for between 0.5 and 3.5 hours; or by preparing pellets from the titanium dioxide powder and added water, annealing of the pellets at between 300 and 500&deg; C., saturation of same with titanium dioxide sol or 1-20% nitric acid in a vacuum, followed by drying and finally annealing at a temperature of between 400 and 1000&deg; C. for between 0.5 and 3 hours.

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Duisburg, Germany

Sonja Weyand