溶剂法合成1-氨基-4-萘磺酸钠方法的改进  

A Technical Improvement on the Synthesis of Sodium 1-Amino-4-naphthalene Sulfonate by Solvent Method

作　　者：张天永[1] 何萌[1] 李彬[1] 王晓[1] 杜晶[1] 段永洁[1] 尹观[1] 

机构地区：[1]天津大学化工学院精细化工系,天津300072

出　　处：《精细化工》2011年第8期826-828,832,共4页Fine Chemicals

摘　　要：用以邻二氯苯为溶剂的液相磺化法代替固相烘焙磺化法,在表面活性剂Tween-60和邻二氯苯存在的条件下,1-萘胺和硫酸经铵盐化、转位磺化、加碱(Na2CO3)成盐合成了1-氨基-4-萘磺酸钠。考察了不同有机溶剂、磺化反应时间、表面活性剂、母液套用对反应的影响。得到的最佳工艺条件为:1-萘胺35.8 g、w(H2SO4)=80%的硫酸33.6 g、邻二氯苯150 mL、Tween-60 1.5 g,磺化反应时间6 h,在该条件下1-氨基-4-萘磺酸钠收率可达90.6%。The method of liquid sulfonation in o-dichlorobenzene as a solvent was used in place of the solid baking sulfonation.Sodium 1-amino-4-naphthalene sulfonate was prepared through ammonium salifying of 1-naphthylamine and sulfuric acid,and then through transposition sulfonation and salifying（Na2CO3） in the presence of Tween-60 as surfactant and o-dichlorobenzene as solvent.The effects of the solvents,the sulfonation reaction time,surfactants,recycling times of mother liquor on the reaction were investigated.The optimum conditions were ascertained as follows：1-naphthylamine 35.8 g,mass fraction 80% sulfuric acid 33.6 g,o-dichlorobenzene 150 mL,Tween-60 1.5 g,sulfonation time 6 h,under which the yield of sodium 1-amino-4-naphthalene sulfonate was 90.6%.

关 键 词：1-萘胺 磺化 表面活性剂 1-氨基-4-萘磺酸钠 精细化工中间体 

分 类 号：O625.75[理学—有机化学]