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
1989-12-04
1990-07-31
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 28, 502 32, 562607, 562891, B01J 3868, B01J 3854, C01G 5500, C07C 5110
Patent
active
049450751
ABSTRACT:
Disclosed is a 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 provides a means for the recovery of rhodium values which normally are not extracted from the tars by treating a methyl iodide solution of such tars with certain oxidants.
REFERENCES:
patent: 4388217 (1983-06-01), Hembre et al.
patent: 4434240 (1984-02-01), Pogach
patent: 4578368 (1986-03-01), Zoeller
patent: 4650649 (1987-03-01), Zoeller
Cushman Michael R.
Nicely Vincent A.
Tennant Brent A.
Zoeller Joseph R.
Eastman Kodak Company
Heath, Jr. William P.
Konopka Paul E.
Thomsen J. Frederick
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