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 1279655

PROCESS FOR SEPARATING IODINE AND ITS COMPOUNDS FROM THE PRODUCTS OBTAINED ON SUBJECTION DIMETHYLETHER, METHYL ACETATE OR METHANOL TO A CARBONYLATION REACTION ABSTRACT OF THE DISCLOSURE Iodine and its compounds are separated from the carbo- nylation products acetic acid, acetic anhydride or ethylidene diacetate obtained on subjecting dimethyl- ether, methyl acetate or methanol to a carbonylation reaction; the total iodine contaminating the carbonyla- tion products is reduced to less than 20 ppb iodine; to this end, the carbonylation products are treated at 50- 200°C with a hydrogen/carbon monoxide-mixture in the presence of at least on noble metal belonging to group VIII of the Periodic System of the elements as a cata- lyst, and separated from the catalyst.

516170

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