METHOD FOR THE CONTINUOUS PREPARATION OF DIOLS FROM ALDEHYDES USING RANEY-COBALT CATALYSIS

METHOD FOR THE CONTINUOUS PREPARATION OF DIOLS FROM ALDEHYDES USING RANEY-COBALT CATALYSIS

The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehy...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Reimer, Joachim, Arnold, Jörg, Schalapski, Kurt, Rahe, Jan Henry, Musenbrock, Marcel
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehydes to afford the corresponding diols, wherein the hydrogenation of the hydroxyaldehydes is performed continuously in the liquid phase over a Raney™ cobalt catalyst in the presence of hydrogen without workup of the reaction mixture from the process step a).