Recovery of catalysts
AssigneeUop LLC
InventorTamotsu Imai
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Abstract
Metallic catalysts such as Group VIII metal complexes which are used in hydroformylation reaction for the production of alcohols from olefins will be found in the product mixture. The separation and recovery of these metal catalysts from the product mixture may be accomplished by treating said product mixture with a biphyllic ligand capable of forming a soluble complex with the metallic catalyst and thus can be removed from the desired product.
Claims16
In a process for the recovery of trace amounts of a Group VIII metallic catalyst from a hydroformylation reaction product consisting essentially of an alcohol derived from hydroformylation of an olefinic hydrocarbon with carbon monoxide and hydrogen at hydroformylation conditions in the presence of a Group VIII metal catalyst and a monoamine modifier, the improvement which comprises, after hydroformylation, contacting at a temperature in the range of from about 20.degree. to about 300.degree. C. and a pressure in the range of from about 1 atmosphere to about 200 atmospheres said hydroformylation reaction product consisting essentially of an alcohol with a biphyllic ligand compound selected from the group consisting of arsenic, nitrogen, oxygen, phosphorous, sulfur, tellurium, antimony, germanium and tin compounds capable of forming a soluble and stable complex with said Group VIII metallic catalyst to separate and recover said trace amounts of Group VIII metallic catalyst.
Dependencies are inferred from the claim text.