催化学报 ›› 2014, Vol. 35 ›› Issue (5): 757-762.DOI: 10.1016/S1872-2067(14)60036-X

• 研究论文 • 上一篇    下一篇

碱性离子液体催化甘油合成1,2-甘油碳酸酯

易宇轩a, 申越a, 孙建奎a, 王波a, 许凤a, 孙润仓a,b   

  1. a 北京林业大学材料科学与技术学院, 林木生物质化学北京市重点实验室, 北京100083;
    b 华南理工大学制浆造纸工程国家重点实验室, 广东广州510640
  • 收稿日期:2013-11-14 修回日期:2014-01-03 出版日期:2014-04-18 发布日期:2014-04-24
  • 通讯作者: 王波
  • 基金资助:

    十二五国家科技计划项目(2012BAD32B06);中央高校基本科研业务费专项资金(TD2011-11);国家自然科学基金(31170556);教育部新世纪优秀人才支持(NCET-13-0671);北京高等学校“青年英才计划”(YETP0765);中国博士后科学基金(2012T50051);国家重点基础研究发展计划(973计划,2010CB732204).

Basic ionic liquids promoted the synthesis of glycerol 1,2-carbonate from glycerol

YuxuanYia, Yue Shena, Jiankui Suna, Bo Wanga, Feng Xua, Runcang Suna,b   

  1. a Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China;
    b State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2013-11-14 Revised:2014-01-03 Online:2014-04-18 Published:2014-04-24
  • Supported by:

    This work was supported by the National Science and Technology Program of the Twelfth Five-Year Plan Period (2012BAD32B06), Fundamental Research Funds for the Central Universities (TD2011-11), the National Natural Science Foundation of China (31170556), New Century Excellent Talents in University (NCET-13-0671), Beijing Higher Education Young Elite Teacher Project (YETP0765), China Postdoctoral Science Special Foundation (2012T50051), and the National Basic Research Program of China (973 Program, 2010CB732204).

摘要:

以离子液体为催化剂,在无溶剂体系中,考察了生物质平台化合物甘油转化1,2-甘油碳酸酯的反应. 与酸性离子液体和常用无机碱性催化剂相比,碱性离子液体咪唑基1-丁基-3-甲基咪唑([Bmim]Im)、氢氧化1-丁基-3-甲基咪唑([Bmim]OH)、咪唑基1-烯丙基-3-甲基咪唑([Amim]Im)、氢氧化1-烯丙基-3-甲基咪唑([Amim]OH)在甘油与碳酸二甲酯的酯交换反应中表现出优异的活性. 其中,以[Bmim]Im离子液体为催化剂时甘油转化率为98.4%和甘油碳酸酯选择性接近100%. 另外,该离子液体可以回收重复利用3次后甘油转化率仍可达92%,甘油碳酸酯选择性可近100%. 此碱性离子液体催化方法具有反应结果较好、产物分离简单、条件温和以及环境友好等特点.

关键词: 酯交换, 甘油, 甘油碳酸酯, 碱性离子液体, 二烷基碳酸酯, 平台化合物

Abstract:

Glycerol has been subjected to a transesterification process with dialkyl carbonate to generate glycerol 1,2-carbonate (GC) using different ionic liquids as catalysts under solvent-free conditions. The basic ionic liquids 1-butyl-3-methylimidazolium imidazolium ([Bmim]Im), 1-butyl-3-methylimidazolium hydroxide ([Bmim]OH), 1-allyl-3-methylimidazolium imidazolium ([Amim]Im), and 1-allyl-3-methylimidazolium hydroxide ([Amim]OH) worked well as catalysts compared with acidic ionic liquid and inorganic basic catalysts. Subsequent optimization of the reaction conditions using [Bmim]Im as a catalyst led to 98.4% glycerol conversion and up to 100% GC selectivity at 70 ℃ under ambient pressure. The recovery and reuse of these ionic liquids were also satisfactory. [Bmim]Im could be reused three times (i.e., 92.0% glycerol conversion and near 100% GC selectivity). This method exhibited several special features including a simple product isolation procedure, high product yield, exclusive selectivity, and mild conditions, as well as avoiding the use of any toxic catalysts.

Key words: Transesterification, Glycerol, Glycerol carbonate, Basic ionic liquid, Dialkyl carbonate, Platform chemcial