Application of ionic liquids as recyclable green catalysts for selective alkylation of phenol

被引：25
作者：
Amirfirouzkouhi, Hamideh [1 ]
Kharat, Ali Nemati [1 ]
机构：
[1] Univ Tehran, Sch Chem, Univ Coll Sci, Tehran, Iran
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2018年 / 196卷
关键词：
Ionic liquids; Alkylation; Phenol; tert-Butylation; 2,4-di-tert-Butylphenol; 2,6-di-tert-Butyl phenol; ACID CATALYSTS; EFFICIENT; ESTERIFICATION; SYSTEM;
D O I：
10.1016/j.seppur.2017.06.065
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Alkylation of phenol with tert-butyl alcohol (TBA) as an alkylating agent was studied in presence of different ionic liquid catalysts. The synthesized ionic liquid catalysts were characterized by H-1 NMR and TGA. It was proved that heteropoly anion-based ionic liquid catalyst is potentially promising candidates in production of 2,4-di-tert-butylphenol (2,4-DTBP) and 2,6-di-tert-butylphenol (2,6-DTBP) with high activity and selectivity. Maximum phenol conversion of 93% was achieved at the molar ratio of phenol:TBA:IL is 1:2:1, reaction time of 3 h and reaction temperature of 80 C with 2,4-DTBP and 2,6-DTBP selectivity of 48 and 41%, respectively. (C) 2017 Published by Elsevier B.V.
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页码：132 / 139
页数：8
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