Dehydrogenation of 1,4-butanediol to .gamma.-butyrolactone

US5955620A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans Jochen Mercker · Mannheim, DE
• Frank-Friedrich Pape · Kleinniedesheim, DE
• Joachim Simon · Grevenbroich, DE
• Andreas Henne · Neustadt, DE
• Michael Hesse · Westlake Village, US
• Ulrich Kohler · Mannheim, DE
• Roman Dostalek · Neuleiningen, DE
• Cristina Freire Erdbrugger · Frankenthal (Pfalz), DE
• Detlef Kratz · Heidelberg, DE

Key dates

• Filing date: Sep 4, 1997
• Grant date: Sep 21, 1999
• Expiry date: Sep 4, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J35/394
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for dehydrogenating 1,4-butanediol to .gamma.-butyrolactone in the gas phase in the presence of a copper-containing catalyst, wherein the catalyst contains 4-40% by weight of copper and 0-5% by weight of Na.sub.2 O, based on the total weight of the catalyst, on a carrier consisting of 80-100% by weight of SiO.sub.2 and 0-20% by weight of CaO.