Method for recovering a Group VIII metal solid complex and hydroformylation method
AssigneeMitsubishi Kasei Corporation
InventorsKeiichi Sato, Yuji Kawaragi
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Abstract
A method for recovering a Group VIII metal solid complex from an organic compound-containing solution containing a Group VIII metal complex, wherein the Group VIII metal complex is precipitated in the presence of a trialkyl phosphine of the following formula (I): ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is an alkyl group and they may be the same or different from one another, and the sum of the carbon numbers of R.sub.1, R.sub.2 and R.sub.3 is at least 42.
Claims27
A method for recovering a Group VIII metal solid complex from an organic compound-containing solution containing a Group VIII metal complex, wherein the Group VIII metal complex is precipitated in the presence of a trialkyl phosphine of the following formula (I):
- ##STR4## wherein each of R.sub.1, R.sub.2 and R.sub.3 is an alkyl group and they may be the same or different from one another, and the sum of the carbon numbers of R.sub.1, R.sub.2 and R.sub.3 is at least 42.
A hydroformylation method for producing a hydroformylated product by reacting an olefinic compound with carbon monoxide and hydrogen in the presence of a Group VIII metal complex catalyst, wherein at least a part of the hydroformylation reaction solution is withdrawn and subjected to precipitation treatment in the presence of a trialkylphosphine of the following formula (I):
- ##STR5## wherein each of R.sub.1, R.sub.2 and R.sub.3 is an alkyl group and they may be the same or different from one another, and the sum of the carbon numbers of R.sub.1, R.sub.2 and R.sub.3 is at least 42, to precipitate, separate and recover the Group VIII metal complex catalyst, which is recycled to the hydroformylation reaction zone.
A hydroformylation product by reacting an olefinic compound with carbon monoxide and hydrogen in the presence of a Group VIII metal complex catalyst having an organic compound as a ligand, wherein as the organic phosphorus compound, a trialkylphosphine of the following formula (I):
- ##STR6## wherein each of R.sub.1, R.sub.2 and R.sub.3 is an alkyl group and they may be the same or different from one another, and the sum of the carbon numbers of R.sub.1, R.sub.2 and R.sub.3 is at least 42, is used, and at least a part of the hydroformylation reaction solution is withdrawn and subjected to precipitation treatment to precipitate, separate and recover the Group VIII metal complex catalyst, which is recycled to the hydroformylation reaction zone.
Dependencies are inferred from the claim text.