PROCESS FOR THE PREPARATION OF ALDEHYDES USING PREFORMED RHODIUM COMPLEX CATALYSTS

• Main Authors: HELMUT BAHRMANN, WERNER KONKOL, ERNST WIEBUS, HANSWILHELM BACH, BOY CORNILS
• Format: Patent
• Language: English
• Published: 07.06.1990
• Edition: 5
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; 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

A process for the preparation of a rhodium catalyst comprising dissolving a carboxylic acid salt of rhodium in a solvent taken from the class consisting of aliphatic, cycloaliphatic, aromatic hydrocarbons and mixtures thereof. The carboxylic acid has 2 to 18 carbon atoms. This salt is reacted with carbon monoxide and hydrogen to form a rhodium hydridrocarbonyl which is reacted with an aqueous solution of a triaryl phosphine. The aqueous solution may be present during the initial reaction of the rhodium salt or may be added thereafter. A catalyst which is the product of the foregoing process is also disclosed, as is a method of producing aldehydes using the catalyst.