| 摘要 |
PURPOSE:To obtain the title compound in high purity and inexpensively, by oxidation in the liquid phase, of an alkyl-substituted aromatic compound, in a solvent of a lower aliphatic carboxylic acid, in the presence of a heavy metal catalyst, a nonaromatic hydrocarbon, and a bromine compound, and by making up for the combustion loss of the solvent. CONSTITUTION:An aromatic compound, e.g. p-xylene, having two or more alkyl substituents, is oxidized in the liquid phase with molecular oxygen in a solvent of a lower aliphatic carboxylic acid, in the presence of a heavy metal catalyst, a nonaromatic hydrocarbon (A) and a bromine compound (B). (A) is a 4-10C aliphatic and alicyclic hydrocarbon, naphtha, its cracking products or catalytic reformate, etc., in an amount of 0.01-10 gram atoms of carbon based on one mole of the raw material.(B) is used as bromine in an amount of 1X10<-5>-2 gram atoms based on one gram atom of carbon in (A). |
