水合肼还原2,6-二硝基甲苯的研究

Study on reduction of 2,6-dinitrotoluene with hydrazine hydrate

将FeCl3溶液快速滴加至NaOH溶液中,制备了FeO(OH)催化剂,用于催化水合肼还原2,6-二硝基甲苯,得到2-氨基-6-硝基甲苯和2,6-二氨基甲苯。结果表明,水合肼与2,6-二硝基甲苯的摩尔比为1.6:1,反应40 min时,2-氨基-6-硝基甲苯的收率可达94%;水合肼与2,6-二硝基甲苯的摩尔比为3.1:1,反应50 min时,2,6-二氨基甲苯的收率可接近100%。

Catalyst FeO（OH） was prepared by dropping iron chloride solution to sodium laydroxlOe sotu- tion, which catalyzed the reduction of 2,6-dinitrotoluene to 2-amino-6-nitrotoluene and 2,6-diaminotolu- ene. The results showed that when the mol ratio of hydrazine hydrate to 2,6-dinitrotoluene is 1.6 ： 1 ,and the reaction time is 40 min, the yield of 2-amino-6-nitrotoluene can reach 94%. When the mol ratio of hy- drazine hydrate to 2,6-dinitrotoluene is 3.1 ： 1, and the reaction time is 50 min,the yield of 2,6-diamin- otoluene can reach about 100%.