Hydroformaylation processes
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsDavid Robert Bryant, Tak Wai Leung, Ernst Billig, Thomas Carl Eisenschmid, James Clair Nicholson
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Abstract
This invention relates to a process for separating one or more phosphorus acidic compounds from a hydroformylation reaction product fluid containing said one or more phosphorus acidic compounds, a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand which process comprises treating said hydroformylation reaction product fluid with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said hydroformylation reaction product fluid.
Claims20
A process for separating one or more phosphorus acidic compounds from a hydroformylation reaction product fluid containing said one or more phosphorus acidic compounds, a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand which process comprises treating said hydroformylation reaction product fluid with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said hydroformylation reaction product fluid, wherein said hydroformylation reaction product fluid comprises an organic phase and said aqueous buffer solution comprises a separate aqueous phase.
A process for stabilizing an organophosphite ligand against hydrolytic degradation and/or a metal-organophosphite ligand complex catalyst against deactivation which process comprises treating a hydroformylation reaction product fluid containing a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand and which also contains one or more phosphorus acidic compounds, with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said hydroformylation reaction product fluid, wherein said hydroformylation reaction product fluid comprises an organic phase and said aqueous buffer solution comprises a separate aqueous phase.
A process for preventing and/or lessening hydrolytic degradation of an organophosphite ligand and/or deactivation of a metal-organophosphite ligand complex catalyst which process comprises treating a hydroformylation reaction product fluid containing a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand and which also contains one or more phosphorus acidic compounds, with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said hydroformylation reaction product fluid, wherein said hydroformylation reaction product fluid comprises an organic phase and said aqueous buffer solution comprises a separate aqueous phase.
An improved hydroformylation process which comprises reacting one or more olefinic unsaturated compounds with carbon monoxide and hydrogen in the presence of a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand to produce a reaction product fluid comprising one or more aldehydes, the improvement comprising preventing and/or lessening hydrolytic degradation of any said organophosphite ligand and deactivation of said metal-organophosphite ligand complex catalyst by treating at least a portion of said reaction product fluid derived from said hydroformylation process and which also contains phosphorus acidic compounds formed during said hydroformylation process with an aqueous buffer solution sufficient to neutralize and remove at least some amount of the phosphorus acidic compounds from said reaction product fluid, wherein said reaction product fluid comprises an organic phase and said aqueous buffer solution comprises a separate aqueous phase.
Dependencies are inferred from the claim text.