【摘要】 介绍由邻二甲苯氯代 ,再经空气氧化及异构体分离合成氯代苯酐中试规模的合成路线。氧化中采用现行商品苯酐氧化的固定床催化剂催化氧化 ,并采用 45块理论塔板的分离塔分离得到纯度大于 98%的 3 氯代苯酐和 4 氯代苯酐更多还原

【Abstract】 A process approaching 3 and 4 chlorophthalic anhydride in high purity via chloriation of o xylene, oxidation of monochloro o xylene by air in gas phase,and separation of 3 and 4 chlorophthalic anhydride afterwards by distillation is described. The applications of both chlorophthalic anhydride are briefly introduced.更多还原