Catalyst and method for producing polytetrahydrofurane

US6870014B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ulrich Steinbrenner · Kohlhof, DE
• Thomas Narbeshuber · Ludwigshafen, DE
• Martin Haubner · Ludwigshafen am Rhein, DE
• Christoph Sigwart · Schriesheim, DE
• Gerd Linden · Heidelberg, DE
• Gerhard Cox · Bad Dürkheim, DE
• Rolf Fischer · Heidelberg, DE
• Michael Hesse · Westlake Village, US
• Gerd Bohner · Malsch, DE
• Hartmut Hibst · Schriesheim, DE
• Ekkehard Schwab · Neustadt, DE
• Andreas Tenten · Maikammer, DE

Key dates

• Filing date: Jul 2, 2001
• Grant date: Mar 22, 2005
• Expiry date: Jul 2, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J35/647
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a catalyst which contains a catalytically active quantity of at least one oxygen-containing molybdenum and/or wolfram compound on an oxidic support material and which has been calcinated at temperatures of 400 to 900° C. after the precursor compound of the catalytically active compounds have been applied to the support material or to a support material precursor. The transport pores for this catalyst each have a diameter of >25 nm and a volume of at least 50 mm3/g. The catalyst contains x μmol (wolfram and/or molybdenum)/m2 molybdenum and/or wolfram, with 10.1<x<20.9 in relation to the finished catalyst, with the oxidic support material having a BET surface area of 135 to 220 m2/g. Catalysts of this type are characterized by an acidity of at least 70 μmol/g at pKs<−3 in the dry state and are therfore very active. The invention also relates to a method for producing a catalyst of this type and to the preferred use thereof.