Verfahren zur Herstellung von Aldehyden

• Main Authors: HAHN, HEINZ-DIETER. DR, BEXTEN, LUDGER. DR., 4224 HUENXE, CORNILS, BOY. DR., 4220 DINSLAKEN, TUMMES, HANS- . DR
• Format: Patent
• Language: German
• Published: 08.02.1979
• Edition: 2
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

An improvement in the process for the continuous manufacture of an aldehyde by reaction of an olefin with carbon monoxide and hydrogen in the presence of a rhodium catalyst at an elevated temperature and pressure followed by distillative separation of the non-converted feedstocks and low boiling components of the reaction mixture, the improvement residing in employing a carbon monoxide/hydrogen mixture containing 2-20 ppm sulfur and recycling residual rhodium compounds, both dissolved and suspended in the distillation residue, to the reaction zone.