C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/168
C22B 11/04 (1985.01)
Patent
CA 1245056
ABSTRACT OF THE DISCLOSURE 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 Image E(-)p II wherein A is alkyl, alkoxy, hydroxyalkyl, aryl having 6-25 carbon atoms, or R7CONHCH2CH2CH2- wherein R7 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. This Application claims priority of German Application P 34 11 034.8, filed March 26, 1984 and German Application P 34 12 335.0, filed April 3, 1984.
477406
Bach Hanswilhelm
Bahrmann Helmut
Cornils Boy
Konkol Werner
Lipps Wolfgang
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Ruhrchemie Aktiengesellschaft
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