无氯苯甲醛的制备苯甲醛是医药、农药、香料等工业的重要中间体。特别是医药级、香料级的苯甲醛，要求不含氯。无氯苯甲醛一般是通过甲苯选择性催化氧化得到的。该法技术要求高，设备投资大。而氯化水解的方法得到的苯甲醛要求无氯有一定的困难，目前还没有工业化生产的报... Chlorobenzaldehyde-free preparation Benzaldehyde is an important intermediate for pharmaceuticals, pesticides and fragrances. In particular, pharmaceutical-grade, fragrance-grade benzaldehyde requires no chlorine. Chlorine-free benzaldehyde is generally obtained by the selective catalytic oxidation of toluene. The law of high technical requirements, equipment investment. The chlorinated hydrolysis of benzaldehyde required chlorine-free have some difficulties, there is no report of industrial production ...