Recovery of rhodium and cobalt low pressure oxo catalyst

Details Recovery of rhodium and cobalt low pressure oxo catalyst Recovery of rhodium and cobalt low pressure oxo catalyst

1982-06-21

1983-06-28

Carter, Herbert T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252414, 252416, 252419, 260439R, 423 22, 423139, C07F 1500

Patent

active

043904734

ABSTRACT:
Disclosed is a process for recovering rhodium and cobalt from a low pressure oxo catalyst solution containing ligandized (modified) rhodium and cobalt, organic solvent, and at least trace amounts of oxo aldehyde, which comprises contacting the catalyst solution with an oxygen containing gas and aqueous formic acid to form an organic phase and an aqueous phase, wherein the aqueous phase contains rhodium formate and cobalt formate solublized therein, and thereafter separating said phases to isolate said formates from the organic solvent, by-products and the like, for recycle to the reactor or for further treatment for use in the same or different processes.

REFERENCES:
patent: 3298779 (1967-01-01), Goto et al.
patent: 3901822 (1975-08-01), Browning et al.
patent: 3904547 (1975-09-01), Aycock et al.
patent: 4021463 (1977-05-01), Kummer et al.
patent: 4164481 (1979-08-01), Ma et al.
patent: 4196096 (1980-04-01), Dawes et al.
patent: 4283304 (1981-08-01), Bryant et al.

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