Preparation of acetic anhydride

Details Preparation of acetic anhydride Preparation of acetic anhydride

C - Chemistry, Metallurgy

07

C

260/536.5

C07C 53/12 (2006.01) C07C 51/56 (2006.01)

Patent

CA 1175857

TITLE PREPARATION OF ACETIC ANHYDRIDE Abstract of the Disclosure The preparation of acetic anyhydride by the carbonyla- tion of methyl acetate in the presence of rhodium, an iodine compound and lithium at elevated temperatures and pressures is improved by the inclusion of about 2 to 7 volume percent hydrogen in the gas feed to the carbonylation reactor. The presence of hydrogen suppresses tar formation and increases reaction rate.

386819

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