FIELD: chemistry.
SUBSTANCE: invention relates to an improved method of preventing precipitation of a catalyst system when 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 an iridium carbonylation catalyst, a methyl iodide cocatalyst, water in an a limited concentration, acetic acid, methyl acetate and boron and gallium as promoters.
EFFECT: combination of boron and gallium as promoters enables to avoid problems with precipitation which are observed in ruthenium-promoted reactions, and the rate of reaction also remains the same compared with conventional ruthenium promoters.
15 cl, 2 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ACETIC ACID | 2007 |
|
RU2467999C2 |
| USING INDIUM AS CATALYST SYSTEM STABILISER IN METHOD OF PRODUCING ACETIC ACID | 2003 |
|
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| METHOD OF PRODUCING ACETIC ACID | 2007 |
|
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| CATALYST AND METHOD OF OBTAINING ACETIC ACID | 2004 |
|
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| ACETIC ACID PRODUCTION PROCESS VIA IRIDIUM-CATALYZED CARBONYLATION | 1997 |
|
RU2245870C2 |
| 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, AND CATALYTIC SYSTEM FOR PREPARING ACETIC ACID | 1994 |
|
RU2132840C1 |
| METHOD OF PREPARING ACETIC ACID BY CARBONYLATION | 1996 |
|
RU2160248C2 |
| METHOD FOR PREPARING ACETIC ACID | 2003 |
|
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| METHOD OF OBTAINING ACETIC ACID | 2003 |
|
RU2336263C2 |
