Shell catalyst for producing acetic acid by gas phase oxidation of unsaturated C4 -hydrocarbons

US6274763A · kind A · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Christoph Ruedinger · Starnberg, DE
• Hans Eberle · Mountain View, US
• Norbert Zeitler · Hersbruck, DE
• Max Wollin · Hersbruck, DE
• Gudrun Wittmann · Hersbruck, DE

Key dates

• Filing date: May 14, 1999
• Grant date: Aug 14, 2001
• Expiry date: May 14, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J37/0219
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a shell catalyst for producing acetic acid by gas-phase oxidation of unsaturated C.sub.4 -hydrocarbons, comprising an inert non-porous carrier and a catalytically active mixed oxide material applied on the outer surface of the carrier, wherein said material contains (a) one or several oxides from the group titanium dioxide, zircon dioxide, stannic dioxide, aluminum oxide, and b) 0.1 to 1.5 wt. % vanadium pentoxide in relation to the weight of the constituent (a) and per m.sup.2 /g of the specific surface of the constituent (a).