Catalyst system consisting of a carrier and of a co-catalyst

US7666958B2 · kind B2 · utility

Assignees

• Sachtleben Chomie GmbH · DE
• Studiengesellschaft Kohle gGmbH · DE

Inventors

• Bernd Hirthe · Tönisvorst, DE
• Bernd Proft · Neukirchen-Vluyn, DE
• Jochen Winkler · Eßlingen, DE
• Udo Blumenthal · Neheim, DE
• Gerhard Fink · Neheim, DE
• Klaus Hauschild · Duisburg, DE

Key dates

• Filing date: Mar 24, 2006
• Grant date: Feb 23, 2010
• Expiry date: Mar 24, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to methods for producing cesium hydroxide solutions during which: cesium-containing ore is disintegrated with sulfuric acid while forming a cesium aluminum sulfate hydrate, which is poorly soluble at low temperatures; the formed cesium alum is separated away in the form of a solution from the solid ore residues; the aluminum is precipitated out of the cesium alum solution while forming a cesium sulfate solution; the formed cesium sulfate solution is reacted with barium hydroxide or stontium hydroxide while forming a cesium hydroxide solution, and; the formed cesium hydroxide solution is concentrated and purified.