Processes for recovery of rhodium from a hydroformylation process
AssigneeDow Technology Investments LLC
InventorsMarinus A. Bigi, Rick B. Watson
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AssigneeDow Technology Investments LLC
InventorsMarinus A. Bigi, Rick B. Watson
Estimating the term…
Some embodiments of the present invention relate to processes to recover rhodium from a hydroformylation process. In some embodiments, the process to recover rhodium from the hydroformylation process comprises (a) treating a catalyst-containing stream from the hydroformylation process with 2.5 to 20 weight percent, based on the total weight of the stream, of a water-soluble organic amine of the following structure: wherein R32, R33, and R34 are each independently alkyls and ethoxylates, and wherein no more than one of R32, R33, and R34 is alkyl; (b) heating the resulting solution in the presence of syngas to a temperature of at least 65° C. to generate a rhodium-rich phase and a supernatant; and (c) removing the supernatant to recover the rhodium-rich phase.
A process to recover rhodium from a hydroformylation process that comprises producing at least one aldehyde in a reaction zone, the reaction zone comprising a C7 to C22 olefin, hydrogen and carbon monoxide in the presence of a catalyst, wherein the catalyst comprises rhodium and an organophosphorus ligand, wherein the process comprises:
Dependencies are inferred from the claim text.