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:
May. 08, 2007
Filed:
Nov. 06, 2003
Markus Schubert, Ludwigshafen, DE;
Michael Hesse, Worms, DE;
Rolf-hartmuth Fischer, Heidelberg, DE;
Take Constantinescu, Heidelberg, DE;
Markus Schubert, Ludwigshafen, DE;
Michael Hesse, Worms, DE;
Rolf-Hartmuth Fischer, Heidelberg, DE;
Take Constantinescu, Heidelberg, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention provides a process for hydrogenating carbonyl compounds, in particular C-dicarboxylic acids to mixtures of tetrahydrofuran and gamma-butyrolactone, over supported rhenium catalysts, wherein rhenium and at least one further metal of groups VIII or Ib of the Periodic Table of the Elements, in particular ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), platinum (Pt), copper (Cu), silver (Ag) or cobalt (Co), is applied to the support in the form of at least one bimetallic precursor compound, and also to these catalysts.