Catalyst and hydrogenation of carbonyl compounds in the liquid phase using the catalyst
AssigneeBASF SE
InventorsMarkus Schubert, Michael Hesse, Rolf-Hartmuth Fischer, Take Constantinescu
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Abstract
The present invention provides a process for hydrogenating carbonyl compounds, in particular C4-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.
Claims14
A supported rhenium catalyst, comprising rhenium and at least one further metal of groups VIII or Ib of the Periodic Table of the Elements, in the form of at least one perrhenate double salt of the general formula (I):
- [Mea(NH3)b(OH)c](ReO4)d•eH2O (I)
- wherein:
- Me is a metal of groups VIII and Ib of the Periodic Table of the Elements;
- a is 1 or 2;
- b is an integer from 1 to 8;
- c is an integer from 0 to 5;
- d is 2, 3 or 4;
- and e is an integer from 0 to 12;
- which is applied to the support as a bimetallic precursor compound.
Dependencies are inferred from the claim text.