FIELD: oxidation catalysts. SUBSTANCE: regeneration of catalyst accomplished by extraction thereof from bottom residue with water at elevated temperature, cooling of extract suspension, and separation of organics from extract followed by return of catalyst into oxidation zone is distinguished by conducting cooling at the rate 12-18 C/h to 12-20 C and treating extract devoid of organics with hydrohalogen acids in amounts 0.050 to 0.71 mol per Co+Mn summary molarity (for monohalogen condition). EFFECT: increased degree of removal of organic by-products from desired product and increased degree of Co, Mn, and Br recovery. 2 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING ISOPHTHALIC ACID | 1998 |
|
RU2163592C2 |
| PROCESS FOR PREPARING PHTHALIC ACID ISOMERS HAVING HIGH PURIFICATION DEGREE | 1993 |
|
RU2047595C1 |
| PROCESS FOR PREPARING BENZENEDICARBOXYLIC ACID ISOMERS HAVING HIGH PURIFICATION DEGREE | 1993 |
|
RU2047594C1 |
| METHOD OF SYNTHESIS OF NAPHTHALENE-2,6-DICARBOXYLIC ACID | 1992 |
|
RU2030386C1 |
| METHOD OF PRODUCING AND PURIFYING ISOPHTHALIC ACID | 2010 |
|
RU2458042C2 |
| METHOD FOR PREPARING ISOPHTHALIC ACID OF HIGH PURITY DEGREE | 2004 |
|
RU2266277C2 |
| PROCESS FOR PREPARING P-AMINOBENZOIC ACID β- DIETHYLAMINOETHYL ESTER HYDROGHLORIDE | 1994 |
|
RU2083557C1 |
| METHOD OF SYNTHESIS OF 2,2-BIS-[4-(3,4-DICARBOXYPHENOXY)-PHENYL]-PROPANE BIS-IMIDE | 1992 |
|
RU2036906C1 |
| METHOD OF PRODUCING PURE ISOPHTHALIC ACID AND BY-PRODUCTS FROM ISOMERS OF CYMENE AND DIISOPROPYLBENZENE | 2009 |
|
RU2415836C2 |
| HIGH-PURITY ISOPHTHALIC ACID PRODUCTION PROCESS | 1997 |
|
RU2137753C1 |
