The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2005
Filed:
Jul. 02, 2001
Ulrich Steinbrenner, Neustadt, DE;
Thomas Narbeshuber, Ibbenbüren, DE;
Martin Haubner, Limburgerhof, DE;
Christoph Sigwart, Schriesheim, DE;
Gerd Linden, Heidelberg, DE;
Gerhard Cox, Bad Dürkheim, DE;
Rolf-hartmuth Fischer, Heidelberg, DE;
Michael Hesse, Worms, DE;
Gerd Bohner, Malsch, DE;
Hartmut Hibst, Schriesheim, DE;
Ekkehard Schwab, Neustadt, DE;
Andreas Tenten, Maikammer, DE;
Ulrich Steinbrenner, Neustadt, DE;
Thomas Narbeshuber, Ibbenbüren, DE;
Martin Haubner, Limburgerhof, DE;
Christoph Sigwart, Schriesheim, DE;
Gerd Linden, Heidelberg, DE;
Gerhard Cox, Bad Dürkheim, DE;
Rolf-Hartmuth Fischer, Heidelberg, DE;
Michael Hesse, Worms, DE;
Gerd Bohner, Malsch, DE;
Hartmut Hibst, Schriesheim, DE;
Ekkehard Schwab, Neustadt, DE;
Andreas Tenten, Maikammer, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
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 mm/g. The catalyst contains x μmol (wolfram and/or molybdenum)/mmolybdenum 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 m/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.