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2013 , Vol. 33 >Issue 08: 1791 - 1797

DOI: https://doi.org/10.6023/cjoc201212031

研究论文

新型固载碱性功能化离子液体的制备、表征及其在Henry反应中的应用

  • 赵东旺 ,
  • 吴悦彤 ,
  • 陈婷婷 ,
  • 戴立益 ,
  • 王媛媛
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  • a 华东师范大学化学系 上海 200241;
    b 郑州师范学院化学系 郑州 450044

收稿日期: 2012-12-20

  修回日期: 2013-02-09

  网络出版日期: 2013-04-07

基金资助

国家自然科学基金(Nos. 21073064/B030302, 21003049/B030301)资助项目.

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Efficient and Convenient Synthesis of Ionic Liquid Supported SBA-15 Mesoporous Srganosilica and Its Beneficial Applications in Henry Reaction

  • Zhao Dongwang ,
  • Wu Yuetong ,
  • Chen Tingting ,
  • Dai Liyi ,
  • Wang Yuanyuan
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  • a Department of Chemistry, East China Normal University, Shanghai 200241;
    b Department of Chemistry, Zhengzhou Normal University, Zhengzhou 450044

Received date: 2012-12-20

  Revised date: 2013-02-09

  Online published: 2013-04-07

Supported by

Project supported by the National Natural Science Foundation of China (Nos. 21073064/B030302, 21003049/B030301).

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摘要

与嫁接法相比, 我们选择一种新颖可控的方法将碱性功能化离子液体分散到SBA-15分子筛中, 得到固载碱性功能化离子液体. 通过X射线衍射、N2吸附/脱附、热重分析和傅里叶变换光谱对其结构进行表征, 并以Knoevenagel反应做为模板反应, 考察该催化剂的催化活性. 结果表明, 我们所合成的催化剂比后嫁接法制备的催化剂具有更规则的有序介孔结构、更高的离子液体负载量和更好的催化活性. 将此催化剂应用在无溶剂条件下的Henry反应中, 同样得到了较好的催化性能和循环使用次数.

关键词： 固载催化剂; 离子液体; SBA-15; Knoevenagel反应; Henry反应

本文引用格式

赵东旺 , 吴悦彤 , 陈婷婷 , 戴立益 , 王媛媛 . 新型固载碱性功能化离子液体的制备、表征及其在Henry反应中的应用[J]. 有机化学, 2013 , 33(08) : 1791 -1797 . DOI: 10.6023/cjoc201212031

Abstract

Compared with post-grafting method, a novel and controllable strategy is applied to introduce highly dispersed ionic liquid species into mesoporous SBA-15 silica, providing simpler synthesis steps, more uniform surface coverage and higher loading of ionic liquid, with fewer raw materials. Basic task-specific ionic liquids are synthesized and characterized by X-ray diffraction, N2 adsorption-desorption, thermogravimetry and fourier transform infrared spectroscopy. The results showed that the catalysts, prepared by co-condensation method, have better ordered mesostructure and higher loading of ionic liquid than those by post-grafting approach. Meanwhile, the catalysts exhibit much higher activity than those by post-grafting approach in Knoevenagel condensation. Furthermore, these supported catalysts are also proven to be efficient and reusable in Henry reaction under solvent-free conditions.

Key words： supported catalyst; ionic liquid; SBA-15; Knoevenagel condensation; Henry reaction

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