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,...
Patent
1982-09-27
1984-02-28
Konopka, P. 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,...
260549, 423 22, 4231795, 423488, 423504, 502 28, B01J 3140, B01J 2396, B01J 2732, C07C 5112
Patent
active
044342411
ABSTRACT:
The present invention provides a process for the recovery of rhodium, lithium, and iodine values from tar which is generated during carbonylation reactions. The process comprises sequentially extracting the tar with water and then leaching the remaining tar with acetic acid, burning the resulting residue, and recycling the resulting rhodium-enriched residue to the reaction process. Preferably, the process further comprises the recovery of iodine values by the incineration of the acetic acid leachate and treatment of the off-gas with aqueous alkali hydroxide. Lithium values are recovered by evaporating water from the aqueous phase of the water extraction step and recycling the resulting residue to the reaction process.
REFERENCES:
patent: 4241219 (1980-12-01), Wan
patent: 4341741 (1982-07-01), Davidson et al.
patent: 4388217 (1983-06-01), Hembre et al.
Cotey David E.
Eastman Kodak Company
Konopka P. E.
Reece III Daniel B.
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