Catalyst and process for the production of acetic acid

Details Catalyst and process for the production of acetic acid Catalyst and process for the production of acetic acid

C - Chemistry, Metallurgy

07

C

C07C 51/12 (2006.01) B01J 23/46 (2006.01) C07C 53/08 (2006.01)

Patent

CA 2532234

A catalyst and process for the production of acetic acid by the carbonylation of methanol and/or a reactive derivative thereof. The catalyst system comprises an iridium carbonylation catalyst, methyl iodide co-catalyst, optionally at least one of ruthenium, osmium, rhenium, zinc, gallium, tungsten, cadmium, mercury and indium and at least one non-hydrohalogenoic acid promoter. The non-hydrohalogenoic acid may be an oxoacid, a superacid and/or a heteropolyacid.

L'invention décrit un catalyseur ainsi qu'un procédé de production d'acide acétique par carbonylation du méthanol et/ou d'un dérivé réactif de celui-ci. Le système catalytique comprend un catalyseur de carbonylation à l'iridium, un cocatalyseur d'iodométhane, et éventuellement au moins l'un et/ou l'autre de ces composés : ruthénium, osmium, rhénium, zinc, gallium, tungstène, cadmium, mercure et indium , en plus d'au moins un promoteur d'acide non hydrohalogénoïque. L'acide non hydrohalogénoïque peut être un oxoacide, un superacide et/ou un hétéropolyacide.

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