抗氧剂壬基二苯胺的合成及其热稳定性  

Synthesis and Thermostability of Antioxidant Nonyldiphenylamine

作　　者：李博仑[1] 郝庆兰[1] 杨腾[1] 武文洁[1] 吴燕[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《合成化学》2015年第9期834-836,840,共4页Chinese Journal of Synthetic Chemistry

基　　金：横向项目"液态烷基二苯胺抗氧剂的合成研究"

摘　　要：以壬烯(NOE)和二苯胺(DPA)为原料,活性白土(AC)为催化剂,经烷基化反应合成了抗氧剂壬基二苯胺[Ⅰ:72.35%二壬基二苯胺(2C9-DPA)和26.68%单壬基二苯胺(C9-DPA)],其结构和热稳定性经1H NMR,13C NMR,IR,LC和TGA表征。考察了物料比r[n(NOE)∶n(DPA)],AC用量和反应时间对DPA转化率和2C9-DPA选择性的影响。结果表明:在最优反应条件[DPA 30 mmol,r=8.0,AC 1.5 g,于145℃±2℃反应10h]下合成Ⅰ,DPA转化率为97.9%,2C9-DPA的选择性为64.1%。Ⅰ于262℃开始分解,346℃失重率为99%。An antioxidant, nonyldiphenylamine[ I ： 72.35% 2Cg-DPA and 26.68% Cg-DPA] , was synthesized by alkylation reaction, using nonene（ NOE）, diphenylamine（DPA） as materials and activated clay（AC） as catalyst. The structure and thermostability of I were characterized by^1H NMR, ^13C NMR, IR and TGA. Effects of molar ratio{ r[n（NOE） ： n（DPA） ] t, dosage of AC and reaction time on conversion of DPA and selectivity of 2C9-DPA were investigated. The results showed that conversion of DPA and selectivity of 2Cg-DPA were 97.9% and 64.1% under the optimized reaction conditions[DPA 30 mmol, r =8.0, AC 1.5 g, reacted at 145 ℃ ＋2 ℃ for 10 hi, respectively. TGA analysis indicated that I began to decompose at 262 ℃ and weight loss ratio was 99% at 346 ℃.

关 键 词：壬基二苯胺 抗氧剂 烷基化 合成 热稳定性 

分 类 号：O625.63[理学—有机化学] TQ246.3[理学—化学]