High-temperature resistant molded catalysts and process for their production

US4870045A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Bertram Gasper · Troisdorf, DE
• Karlheinz Neuschaffer · Leichlingen, DE
• Paul Spielau · Troisdorf, DE

Key dates

• Filing date: Jul 23, 1987
• Grant date: Sep 26, 1989
• Expiry date: Jul 23, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A molded catalyst has a catalyst material homogeneously distributed in an inorganic molding or a catalytic material anchored on the surface of molding is produced from a flowable molding composition made up of PA0 (a) an oxide mixture with contents of amorphous SiO.sub.2 and aluminum oxide and/or PA0 (b) electrostatic precipitator ash from high-temperature coal-burning power plants and/or PA0 (c) calcined ground bauxite, as a reactive, finely divided component, and an alkali silicate solution as well as optionally finely divided fillers, by casting into a mold or, respectively, by pressing or preferably extrusion and hardening of the molding composition at temperatures of 50.degree.-95.degree. C. Removal of water at 100.degree.-550.degree. C. is possible, as well as baking at temperatures of up to 1,500.degree. C.