Catalyst and hydrogenation of carbonyl compounds in the...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Nitrogen compound containing

Reexamination Certificate

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C502S102000, C502S324000, C502S330000, C502S506000, C502S512000, C524S113000, C549S313000, C549S325000, C549S326000, C549S508000

Reexamination Certificate

active

10534621

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.

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“Thermal Structural Behavior and Properties of tetraamminecobalt (II) perrhenate. Electronic and Vibrational Spectra and Magnetic Properties of tetraamminecobalt (II) cation.” Journal of Molecular Structure, vol. 15, Issue 2, Feb. 1973, pp. 289-299.

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