Separating rhodium from solution containing rhodium carbonyl com

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Platinum group metal

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252411R, 252413, 252414, 423417, C01G 5500

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041316401

ABSTRACT:
A process for the separation of rhodium from a solution containing a rhodium carbonyl complex such as is obtained in the carbonylation of an alkanol or of an olefinically or acetylenically unsaturated compound with carbon monoxide and water and conversion of the separated rhodium into a soluble rhodium carbonyl complex, in which the solution containing the rhodium carbonyl complex is treated with hydrogen in the presence of a carrier substance at a temperature of from 25.degree. to 300.degree. C and at a pressure of from 1 to 700 atmospheres, the solution freed from rhodium is separated and the rhodium precipitated on the carrier is converted into a soluble rhodium carbonyl complex by treatment with carbon monoxide in the presence of a solvent and a compound which can replace the carbon monoxide as a ligand at a temperature of from 20.degree. to 300.degree. C and at a pressure of from 1 to 700 atmospheres.

REFERENCES:
patent: 2748167 (1956-05-01), Hagemeyer et al.
patent: 3716626 (1973-02-01), Kniese et al.
patent: 3887489 (1975-06-01), Fannin et al.

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