SO3H-functionalized ionic liquids for selective alkylation of p-cresol with tert-butanol

被引：44

作者：

Liu, Xiumei ^{[1
]}

Zhou, Jinxia ^{[1
]}

Guo, Xinwen ^{[1
]}

Liu, Min ^{[1
]}

Ma, Xiaoliang ^{[2
,3
]}

Song, Chunshan ^{[1
,2
,3
]}

Wang, Chang ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116012, Peoples R China

[2] Penn State Univ, Energy Inst, University Pk, PA 16802 USA

[3] Penn State Univ, Dept Energy & Geoenvironm Engn, University Pk, PA 16802 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2008年 / 47卷 / 15期

关键词：

D O I：

10.1021/ie070647t

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The SO3H-functionalized ionic liquids were synthesized by using pyridine and 1,4-butane or 1,3-propane sulfone as the source and characterized by NMR and time-of-flight mass spectrometry. The acidity of the ionic liquids determined by the Hammett method is almost the same as that of a conventional acid, such as H2SO4. The catalytic performance of ionic liquids for the tert-butylation of p-cresol with tert-butanol was evaluated; by using the ionic liquids as catalysts at the optimum reaction conditions, 79% of the p-cresol conversion and 92% of the selectivity to 2-tert-butyl-p-cresol can be obtained. The spent ionic liquid can be recovered and recycled. The possible mechanism for this reaction system was discussed based on the reaction results and the ab initio calculation results.

引用

页码：5298 / 5303

页数：6

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