Regeneration and separation of rhodium-containing or iridium-con

Details Regeneration and separation of rhodium-containing or iridium-con Regeneration and separation of rhodium-containing or iridium-con

1975-09-24

1977-05-03

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252413, 260604HF, C07F 1500

Patent

active

040214630

ABSTRACT:
Regeneration and separation of catalysts Me(CO)(PR.sub.3).sub.2 Hal(I) and HMe(CO)(PR.sub.3).sub.3 (II), where Me is rhodium or iridium, Hal is halogen and R denotes the same or different hydrocarbon radicals, from distillation residues of hydroformylation mixtures by treating said residues with aqueous acids and peroxides, mixing the resulting Me salt solutions with water-soluble organic solvents and with a phosphine PR.sub.3 and, in the case of the preparation of compound I, with a hydrohalic acid or an alkali metal halide, reacting the solutions at from 0.degree. to 150.degree. C. and from 1 to 250 bars in case I with carbon monoxide or compounds eliminating carbon monoxide and in case II additionally with hydrogen, and separating the resulting compound I or II.

REFERENCES:
patent: 3515757 (1970-06-01), Sibert
patent: 3547964 (1970-12-01), Olivier
patent: 3560539 (1971-02-01), Booth
patent: 3755393 (1973-08-01), Kniese et al.

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