Method for the production of tetrahydrofuran

US6730800B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Rolf Fischer · Heidelberg, DE
• Frank Stein · Bad Dürkheim, DE
• Rolf Pinkos · Bad Dürkheim, DE
• Michael Hesse · Westlake Village, US
• Michael Jolyon Sprague · Mannheim, DE
• Markus Rösch · Oppenheim, DE
• Holger Borchert · Offstein, DE
• Stephan Schlitter · Schifferstadt, DE
• Ralf-Thomas Rahn · Mannheim, DE
• Alexander Weck · Freinsheim, DE

Key dates

• Filing date: Jun 4, 2003
• Grant date: May 4, 2004
• Expiry date: Jun 4, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Unsubstituted or alkyl-substituted THF is obtained by catalytic hydrogenation in the gas phase of C4-dicarboxylic acids and/or their derivatives using a catalyst comprising <80% by weight, preferably <70% by weight, in particular from 10 to 65% by weight, of CuO and >20% by weight, preferably >30% by weight, in particular from 35 to 90% by weight, of an oxidic support having acid centers, at a hot spot temperature of from 240 to 310&deg; C., preferably from 240 to 280&deg; C., and a WHSV over the catalyst of from 0.01 to 1.0, preferably from 0.02 to 1, in particular from 0.05 to 0.5, kg of starting material/l of catalyst x hour.