VERFAHREN ZUR WIEDERGEWINNUNG VON KATALYSATORWERTEN.
摘要
<p>Disclosed is an improved process for the recovery of 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. The process entails an extraction process wherein rhodium-containing tar is extracted using a combination of aqueous hydrogen iodide, methyl iodide and elemental iodine to recover 95 weight percent or greater of the rhodium in the aqueous phase.</p>
申请公布号
DE68921224(D1)
申请公布日期
1995.03.23
申请号
DE1989621224
申请日期
1989.11.20
申请人
EASTMAN CHEMICAL CO., KINGSPORT, TENN., US
发明人
ODOM, STEVE, CONLEY, ROCHESTER, NEW YORK 14650, US;COOK, STEVEN LEROY, ROCHESTER, NEW YORK 14650, US;TENNANT, BRENT ALAN, ROCHESTER, NEW YORK 14650, US