FIELD: chemistry.
SUBSTANCE: invention relates to an improved method of producing acetic acid via carbonylation of methanol and/or reactive derivative thereof with carbon monoxide in at least one carbonylation reaction zone, containing a liquid reaction composition containing a iridium carbonylation catalyst, a methyl iodide cocatalyst, water in an a limited concentration, acetic acid, methyl acetate and ruthenium and at least one of niobium salt or tantalum salt as promoters.
EFFECT: method enables to conduct carbonylation with considerably smaller amounts of by-products while simultaneously maintaining an acceptable rate of reaction.
16 cl, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ACETIC ACID | 2007 |
|
RU2463287C2 |
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| ACETIC ACID PRODUCTION PROCESS VIA IRIDIUM-CATALYZED CARBONYLATION | 1997 |
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| METHOD OF CARBONYLATION OF ALKYL-ALIPHATIC ALCOHOLS AND/OR REACTIVE DERIVATIVES THEREOF | 1996 |
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| METHOD FOR PRODUCTION OF ACETIC ACID VIA CARBONYLATION OF METHANOL AND/OR ITS REACTIVE DERIVATIVE | 1997 |
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| METHOD OF PREPARING ACETIC ACID BY CARBONYLATION | 1996 |
|
RU2160248C2 |
