Powdered titanium oxide, method for the production thereof, and use thereof
AssigneeHuntsman P&A Germany GmbH
InventorsSonja Grothe, Tobias Thiede
Life of this patent
Estimating the term…
Abstract
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(2-x)(OH)2x, with 0<x≤1, (calculated as TiO2), and a silicon dioxide and hydrated precursors of the silicon dioxide (calculated as SiO2). A weight ratio of TiO2/SiO2, determined for TiO2 and SiO2 respectively, 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° C. for at least 2 hours. The powdered catalyst material has a specific surface area of >300 m2/g and an isoelectric point of from 4.0 to 7.0.
Claims19
A powdered catalyst material comprising:
- a combined content of at least 90 wt.-% of,
- a hydrated titanium oxide having the general formula TiO(2-x)(OH)2x, with 0<x≤1, (calculated as TiO2), and
- at least one of a silicon dioxide and hydrated precursors of the silicon dioxide (calculated as SiO2);
- a specific surface area of >300 m2/g;
- an isoelectric point of from 4.0 to 7.0;
- and
- a total pore volume (N2 desorption) of at least 0.7 cm3/g,
- wherein,
- a weight ratio of TiO2/SiO2, determined for TiO2 and SiO2 respectively, is at least 3 and less than 30, and
- the wt.-% for both the combined content of at least 90 wt.-% and for the weight ratio of TiO2/SiO2 is based on a total weight of the powdered catalyst material after the powdered catalyst material has been dried at 105° C. for at least 2 hours.
Dependencies are inferred from the claim text.