化工进展2016，Vol.35Issue(z2)：272-275,4.DOI:10.16085/j.issn.1000-6613.2016.s2.045
咪唑类离子液体催化合成抗氧剂BHT
Study on the synthesis of BHT catalyzed by ionic liquid
赵磊 1谢君怡 1黄文才1
作者信息
- 1. 四川大学化学工程学院制药与生物工程系，四川 成都 610065
- 折叠
摘要
Abstract
As a typical sterically hindered phenolic antioxidant, 2,6-di-tert-butyl-4-methyl-phenol,also known as BHT,is widely used in chemical industry,food,medicine and other fields owing to its strong anti-oxidation property, low volatility, high stability and strong durability.The preparation of BHT catalyzed by 1-(3-sulfopropyl )-3-methyl imidazole (IL1 ) using p-cresol and isobutylene as the starting materials was studied.The optimal reaction conditions were determined as follows:the molar ratio of p-cresol to IL1 was 5∶1 , and the reaction was carried out at 80℃ for 8h.The purity of crude BHT was 99.1% and the yield was 93.0%.Furthermore,it was found that IL1 could be recycled for at least four times without any apparent loss of catalytic activity.In general,IL1 was a promising alternative for such traditional acid catalysts as H2 SO4 and TsOH for the preparation of BHT,owing to its advantages of easy separation,reusability,high activity,and low corrosion to equipment.关键词
2,6-二叔丁基对甲酚/咪唑/离子液体Key words
BHT/imidazole/ionic liquid分类
化学化工引用本文复制引用
赵磊,谢君怡,黄文才..咪唑类离子液体催化合成抗氧剂BHT[J].化工进展,2016,35(z2):272-275,4.
