摘要
研究了含羧酸基离子液体[C1imCH2CH2COOH]HSO4催化苯酚与叔丁醇的烷基化反应,考察不同的酸性离子液体、反应温度T、反应时间t、反应物摩尔比及离子液体(IL)用量等因素对反应结果的影响,并考察了重复利用离子液体的可能性。研究结果表明,在T=70℃,n(苯酚)∶n(叔丁醇)∶n(IL)=5∶5∶4t,=7h的条件下,苯酚的转化率可达68.7%,对位叔丁基苯酚的选择性为45.1%,且分离后的离子液体经真空干燥脱水后重复使用3次后,其催化活性基本不变。
Alkylation of phenol with TBA catalyzed by COOH-functionalized acidic ionic liquid [C1imCH2CH2COOH]HSO4 has been investigated. The influences of different ionic liquids, reaction temperature （T）, reaction time （t）, reactant ratio （molar ratio of phenol to 4-tert-butylphenol）, the amount and the recycle times of ionic liquid on the catalytic properties in the tert-butylation of phenol are studied. The optimum reaction conditions for this reaction are as follows： the molar ratio of phenol to 4-tert-butylphenol to ionic liquid is 5：5：4, the reaction temperature and time are 70℃ and 7h respectively. Under these conditions, the conversion of phenol and the selectivity of p-TBP are 68.7% and 45.1%, respectively. No apparent loss of activity and selectivity of the ionic liquid are observed after three recycles and vacuum drying.
出处
《化学与粘合》
CAS
2011年第4期1-3,64,共4页
Chemistry and Adhesion
基金
国家自然科学基金项目(编号:20706027)
教育部重点基金项目(编号:209031)
辽宁省教育厅基金项目(编号:2009A430
L2010243)
辽宁省高等学校优秀人才支持计划项目(编号:LR201024)
辽宁省自然基金项目(编号:20102131)
关键词
含羧酸基离子液体
苯酚
叔丁醇
烷基化反应
COOH-functionalized acidic ionic liquid
phenol
4-tert-butylphenol
alkylation
