A process for gas phase ammoxidation of 3,4-dichlorotoluene to prepare 3,4-dichlorobenzonitrile(DCBN) using DN120 catalyst was studied.

• 采用气相氨氧化法,在DN120号催化剂作用下,由3,4-二氯甲苯制备了3,4-二氯苯腈(DCBN)。