Process for separating iodine and its compounds from the...

Details Process for separating iodine and its compounds from the... Process for separating iodine and its compounds from the...

C - Chemistry, Metallurgy

07

C

260/496.6, 260/5

C07C 53/08 (2006.01) C07C 51/487 (2006.01) C07C 51/573 (2006.01) C07C 53/12 (2006.01) C07C 69/16 (2006.01)

Patent

CA 1279656

PROCESS FOR SEPARATING IODINE AND ITS COMPOUNDS FROM THE PRODUCTS OBTAINED ON SUBJECTING DIMETHYLETHER, METHYL ACETATE OR METHANOL TO CARBONYLATION ABSTRACT OF THE DISCLOSURE Iodine and its compounds are separated from the car- bonylation products acetic acid, acetic anhydride or ethylidene diacetate obtained on subjecting dimethylether, methyl acetate or methanol to a carbonylation reaction in the presence of an iodine-containing catalyst. The quantity of total iodine contaminating the carbonylation products is reduced to less than 20 ppb iodine by treating the pro- ducts at 20 - 200 °C with peracetic acid, diacetyl per- oxide or a compound yielding these two agents under the reaction conditions, and separating them distillatively.

518619

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