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US 2017/0320043 A1Published application
Low-Alkali Catalyst Material and Process for Preparation Thereof
AssigneeSachtleben Chemie GmbH
InventorsBernd Proft, Regina Optehostert, Ulrich Gesenhues, Bernd Rohe, Sonja Grothe
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Abstract
A catalyst material, more specifically a catalyst material based on TiO2/SiO2 in particulate form having a content of metal in the form of the metal oxide or metal oxide precursor, is used in chemical catalysis, especially for removal of pollutants, such as nitrogen oxides from combustion gases.
Claims7
A process for producing the low-alkali-metal catalyst material, comprising:
- reacting 1) a Ti-containing solution in the form of a titanyl sulfate solution or titanium sulfate having a concentration of dissolved Ti of, converted to an oxide basis, from 10 to 250 g of TiO2 per liter of solution and 2) a low-alkali-metal solution of hydrated precursors of one or more Si-oxygen compounds in the presence of ammonia;
- and
- filtering off and washing the obtained product;
- and
- subjecting the obtained product to a thermal treatment and optionally drying,
- wherein the hydrated precursors of one or more Si-oxygen compounds comprise silicic acid, silica sol, silica gel, or ammonium silicate.
3 more elements
Dependencies are inferred from the claim text.