Process for removing acetone from reaction mixtures of carbonyla

Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material

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203 49, 203 75, 203 77, 203 78, 203 80, 203 82, 203 84, 203DIG6, 568411, B01D 500

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047174544

ABSTRACT:
A process for removing by product acetone from reaction mixtures obtained by reacting methyl acetate and/or dimethylether with carbon monoxide at elevated temperatures to obtain acetic anhydride in the presence of a catalyst system consisting essentially of carbonyl complexes of noble metals belonging to group VIII of the Periodic System of the elements, acetic acid, an organophosphorus or organonitrogen compound, and methyl iodide whereby the acetone obtained as a by-product during the reaction is subjected to condensation at temperatures of 50.degree. to 250.degree. C., under pressures of 0.01 to 150 bars and at a molar ratio as above defined for the catalyst system constituent of 1:(25-500):(10-100):(15-150) so as to obtain predominantly higher-boiling secondary products to be distillatively separated in a successive distillation zone together with volatile constituents of the catalyst system.

REFERENCES:
patent: 2704271 (1955-03-01), Harrison et al.
patent: 3153068 (1964-10-01), Porter et al.
patent: 3215745 (1965-11-01), Frank
patent: 3686078 (1972-08-01), Hauptmann et al.
patent: 4252741 (1981-02-01), Porcelli et al.
patent: 4252748 (1981-02-01), Hoch et al.
patent: 4302611 (1981-11-01), Porcelli
patent: 4381221 (1983-04-01), Isshiki et al.
patent: 4418196 (1983-11-01), Nakahara et al.
patent: 4444624 (1984-04-01), Erpenbach et al.
patent: 4536581 (1985-08-01), Cantatore et al.
Fieser et al, "Organische Chemie", 1963, pp. 551 & 552.
Cope et al, "Organic Reactions", vol. 16, p. 19.

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