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高等学校化学研究 ›› 2011, Vol. 27 ›› Issue (3): 503-507.

• Articles • 上一篇    下一篇

Hydroxylation of Benzene to Phenol via Hydrogen Peroxide in Hydrophilic Triethylammonium Acetate Ionic Liquid

HU Xiao-ke, ZHU Liang-fang, GUO Bin, LIU Qiu-yuan, LI Gui-ying and HU Chang-wei*   

  1. Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
  • 收稿日期:2010-04-12 修回日期:2010-09-27 出版日期:2011-05-25 发布日期:2011-04-29
  • 通讯作者: HU Chang-wei E-mail:gchem@scu.edu.cn; chwehu@mail.sc.cninfo.net
  • 基金资助:

    Supported by the National Natural Science Foundation of China(Nos.20502017, 20872102).

Hydroxylation of Benzene to Phenol via Hydrogen Peroxide in Hydrophilic Triethylammonium Acetate Ionic Liquid

HU Xiao-ke, ZHU Liang-fang, GUO Bin, LIU Qiu-yuan, LI Gui-ying and HU Chang-wei*   

  1. Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
  • Received:2010-04-12 Revised:2010-09-27 Online:2011-05-25 Published:2011-04-29
  • Contact: HU Chang-wei E-mail:gchem@scu.edu.cn; chwehu@mail.sc.cninfo.net
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.20502017, 20872102).

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摘要： A new Fenton-like system in a medium of hydrophilic triethylammonium type of ionic liquid(IL) was used for the hydroxylation of benzene to phenol. The triethylammonium acetate([Et3NH][CH3COO]) IL exhibited retardation performance for the decomposition of H2O2 and protection performance for the further oxidation of phenol, thus the yield and selectivity to phenol were promoted greatly. The acidity of the system was proved to be an important factor for the selectivity to phenol. The utilization of H2O2 and the selectivity to phenol, as well as the Turnover number(TON) of the catalyst were effectively enhanced by a benzene-[Et3NH][CH3COO] bi-phase system. The catalyst with [Et3NH][CH3COO] IL was recycled with stable catalytic performance.

关键词: Hydrophilic, Ionic liquid, Fenton-like, Hydroxylation

Abstract: A new Fenton-like system in a medium of hydrophilic triethylammonium type of ionic liquid(IL) was used for the hydroxylation of benzene to phenol. The triethylammonium acetate([Et3NH][CH3COO]) IL exhibited retardation performance for the decomposition of H2O2 and protection performance for the further oxidation of phenol, thus the yield and selectivity to phenol were promoted greatly. The acidity of the system was proved to be an important factor for the selectivity to phenol. The utilization of H2O2 and the selectivity to phenol, as well as the Turnover number(TON) of the catalyst were effectively enhanced by a benzene-[Et3NH][CH3COO] bi-phase system. The catalyst with [Et3NH][CH3COO] IL was recycled with stable catalytic performance.

Key words: Hydrophilic, Ionic liquid, Fenton-like, Hydroxylation