This paper presents the production method of otoluic acid from oxylene by liquidphase oxidation with air in the presence of cobalt naphthenate as catalyst.

• 在中型半连续鼓泡床反应器上 ,评价了用空气作氧化剂 ,环烷酸钴作催化剂由邻二甲苯液相氧化生产邻甲基苯甲酸的工艺条件对产物收率的影响。