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简要介绍了国内外制备4-氯代苯酐的方法,比较了各种方法的优缺点,指出以一氯代邻二甲苯为原料的固定床气相催化氧化法是目前工业生产4-氯代苯酐较宜采用的工艺.
The methods of preparing 4-chlorophthalic anhydride at home and abroad are briefly introduced. The advantages and disadvantages of various methods are compared. It is pointed out that the fixed-bed gas-phase catalytic oxidation using ortho-xylorol as the raw material is the most effective method for industrial production of 4-chlorophthalic anhydride Should adopt the technology.