Abstract:
A method for recovering a transition metal such as rhodium from a polar or non-polar liquid by contacting said transition metal-containing liquid with an ion-exchange resin having bonded ionically thereto an organophosphorus ligand; the transition metal can be eluted from the bed using a liquid containing a sufficient concentration of organophosphorus ligand.
Abstract:
A process for hydrogenating bound oxygen-containing organic feeds into their corresponding alcohols by contact with a coprecipitated copper-aluminum catalyst that has been activated by contact with reducing gas at a temperature that gradually increases.
Abstract:
A method for recovering a transition metal such as rhodium from a polar or non-polar liquid by contacting said transition metal-containing liquid with an ion-exchange resin having bonded ionically thereto an organophosphorus ligand; the transition metal can be eluted from the bed using a liquid containing a sufficient concentration of organophosphorus ligand.
Abstract:
This invention relates to novel ionic phosphites and the use thereof as ligands in homogenous transition metal catalyzed processes, especially hydroformylation.
Abstract:
This invention relates to novel ionic phosphites and the use thereof as ligands in homogenous transition metal catalyzed processes, especially hydroformylation.
Abstract:
Process for the separation and recovery of aldehyde product from a non-aqueous hydroformylation reaction product composition comprising the aldehyde product, a rhodium-ionically charged phosphorus ligand complex, a free ionically charged phosphorus ligand and an organic solubilizing agent for said complex and said free ligand via phase separation using added water or both added water and an added non-polar hydrocarbon compound.
Abstract:
A method for recovering a transition metal, e.g., rhodium, from a polar solution containing a polar solvent-soluble coordination complex of a transition metal and a polar solvent-soluble ionic organophosphine ligand comprising:
(i) treating the polar solution with a conditioning reagent to reduce the amount of said polar solvent-soluble ionic organophosophine ligand capable of forming a coordination complex with the transition metal in the polar solution; and (ii) contacting the polar solution produced in accordance with step (i) with a non-polar organic solvent containing non-polar organic solvent-soluble and polar solvent-insoluble organophosphorus ligand capable of forming a coordination complex with the transition metal to transfer said transition metal from said polar solution into said non-polar organic solvent.
Abstract:
A process for hydrogenating feeds into their corresponding alcohols by contact with a coprecipitated catalyst comprising copper, aluminum, and a metal (X) selected from the group consisting of magnesium, zinc, titanium, zirconium, tin, nickel, cobalt and mixtures thereof; that has been reduced with an increasing temperature during the reduction.
Abstract:
A process for improving the catalytic activity of a partially deactivated solubilized rhodium - tertiary organophosphine complex hydroformylation catalyst.