Process for hydroformylation with rhodium catalysts and the sepa

Details Process for hydroformylation with rhodium catalysts and the sepa Process for hydroformylation with rhodium catalysts and the sepa

1990-10-29

1992-02-25

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Treating with a liquid or treating in a liquid phase,...

423 22, 502 26, 502 27, 568454, B01J 2396, B01J 3868, C22B 1104, C07C 4550

Patent

active

050913506

ABSTRACT:
A process for separating rhodium from mixtures thereof, comprising extracting said rhodium with an aqueous solution of a rhodium complexing agent and a solubilizer. A process for preparing aldehydes in the presence of both the complexing agent and the solubilizer is also set forth. The solubilizer is generally selected from salts of carboxylic acids having 8-20 carbon atoms, alkyl sulfonates, alkyl aryl sulfonates, amines and quaternary ammonium compounds of Formula II ##STR1## wherein A is alkyl, alkoxy, hydroxyalkyl, aryl having 6-25 carbon atoms, or R.sup.7 CONHCH.sub.2 CH.sub.2 CH.sub.2 --wherein R.sup.7 is alkyl having 5-11 carbon atoms; B is an alkyl having 1-25 carbon atoms, an aryl having 6-25 carbon atoms, or an .omega.-hydroxy alkyl having 1-4 carbon atoms; C and D are each independently an alkyl or .omega.-hydroxy alkyl having 1-4 carbon atoms or form, together with each other and the bridging N, a 5 or 6 membered heterocyclic ring; E is a halide, sulfate, borate, sulfonate, lactate or citrate; and p is the number of charges on E. The rhodium complexing agent is preferably a triaryl phosphine carboxylate or sulfonate.

REFERENCES:
patent: 4248802 (1981-02-01), Kuhtz
patent: 4399312 (1983-08-01), Russell
patent: 4731485 (1988-03-01), Cornils et al.

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