| 摘要 |
PURPOSE:To obtain an industrially possible production of a carboxylic acid, suppressing deactivation of a noble metal catalyst, increasing an amount of a formed substance produced based on catalyst metal weight. CONSTITUTION:In a method for oxidizing a primary alcohol of the formula R-CH2OH [R is 1-19C straight-chain or branched alkyl group which may contain hydroxyl group or 1-5C alkoxy group as substituent group or straight-chain or cyclic alkylene group which may contain hydroxyl group or 1-5C alkoxy group as substituent group or 6-12C aralkyl group which may contain substituent group selected from hydroxyl group, fluorine atom, cyano group, 1-5C alkyl group and 1-5C alkoxy on the aromatic nucleus] in the presence of a catalyst containing palladium, platinum or its compound and lead or a lead compound as a promoter, the same amount of a reaction mixture as the amount of materials supplied is taken out from the reactional system while simultaneously feeding an oxygen-containing gas, a raw material alcohol and an alkali aqueous solution to the reactional system containing the catalyst. |
