C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 11/00 (2006.01) B01J 31/40 (2006.01) B01J 38/48 (2006.01) B01J 38/60 (2006.01) C01G 55/00 (2006.01) C07C 51/573 (2006.01)
Patent
CA 2061825
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. jft\applnsff\US695066
Barron Jerry A.
Fillers Carl F.
Middlemas Eric D.
Outlaw Charles E.
Barron Jerry A.
Eastman Chemical Company
Fillers Carl F.
Gowling Lafleur Henderson Llp
Middlemas Eric D.
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