SEPARATION OF PHOSPHINE OXIDE AND ALKYLARYLPHOSPHINE FROM HOMOGENEOUS HYDROFORMYLATION REACTION MIXTURE

• Main Authors: MUELLER THOMAS ING, BAHRMANN HELMUT DR
• Format: Patent
• Language: English
• Published: 10.03.1998
• Edition: 6
• 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

PROBLEM TO BE SOLVED: To efficiently separate the subject catalytically inert compounds by extracting a homogeneous hydroformylation reaction mixture containing a catalyst and an excessive ligand with a solution of an alkali metal hydroxide and separating an aqueous phase. SOLUTION: An organic reaction mixture of a homogeneous hydroformylation carried out by the use of a catalyst containing an organometallic complex compound and an aromatic phosphine ammonium salt of the formula (X is a sulfonate group or a carboxylate group; (a), (b) and (c) are each 0 or 1 and at least one of these parameters (a), (b) and (c) is 1; (n) is 1, 2 or 3; R and R are each a 4-30C alkyl, a 6-10C aryl or cycloalkyl; R' may be H) is extracted with 0.001-0.5wt.% solution of an alkali metal hydroxide or an alkaline earth metal hydroxide. Then an aqueous phase containing phosphine oxide and an alkylarylphosphine is separated to separate the objective compound from the homogeneous hydroformylation reaction mixture.