Shell catalysts, processes for their preparation and their use

US5900386A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Andreas Freund · Kleinostheim, DE
• Peter Panster · Rodenbach, DE

Key dates

• Filing date: Jul 14, 1997
• Grant date: May 4, 1999
• Expiry date: Jul 14, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Disclosed are shell catalysts which contain, on powdered or shaped supports, one or more metals from groups VIII and IB of the Periodic Table of Elements. The catalysts are obtained by coating the support with the catalytically active metals in aqueous solutions of mono- or bimetallic colloids of these metals, wherein the colloids are stabilized by highly hydrophilic surfactants.