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
1991-05-03
1992-03-31
Konopka, Paul 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,...
423 22, 502 22, 502 28, 502 32, 562891, B01J 3868, B01J 3140, C22B 1104, C07C 5110
Patent
active
051008505
ABSTRACT:
Disclosed is an oxidative process for recovering rhodium catalyst values from "tars" formed during the preparation of acetic anhydride by the rhodium catalyzed carbonylation of a mixture of methyl iodide and methyl acetate and/or dimethyl ether. The disclosed process includes the treatment of a tar/methyl iodide solution, which contains rhodium values normally not extracted by aqueous hydrogen iodide, with a solution of hydrogen peroxide and acetic acid.
REFERENCES:
patent: 4388217 (1983-06-01), Hembre et al.
patent: 4650649 (1987-03-01), Zoeller
patent: 4945075 (1990-07-01), Cushman et al.
Barron Jerry A.
Fillers Carl F.
Middlemas Eric D.
Outlaw Charles E.
Eastman Kodak Company
Heath, Jr. William P.
Konopka Paul E.
Thomsen J. Frederick
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