高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

超临界二氧化碳中马来酸锌催化合成环状碳酸酯

戚朝荣, 江焕峰, 刘海灵, 杨少容, 邹波   

  1. 华南理工大学化学科学学院绿色化学研究中心, 广州 510640
  • 收稿日期:2006-07-11 修回日期:1900-01-01 出版日期:2007-06-10 发布日期:2007-06-10
  • 通讯作者: 江焕峰

Synthesis of Cyclic Carbonates Catalyzed by Zinc Maleate Under Supercritical Carbon Dioxide Conditions

QI Chao-Rong, JIANG Huan-Feng*, LIU Hai-Ling, YANG Shao-Rong, ZOU Bo   

  1. Center of Green Chemistry, College of Chemistry, South China University of Technology, Guangzhou 510640, China
  • Received:2006-07-11 Revised:1900-01-01 Online:2007-06-10 Published:2007-06-10
  • Contact: JIANG Huan-Feng

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被引次数

40

摘要： 在超临界二氧化碳中, 利用马来酸锌催化二氧化碳与环氧化物反应合成环状碳酸酯. 单独使用马来酸锌作为催化剂时, 对二氧化碳与环氧丙烷反应的催化活性较低, 而在DBU、DMAP、三乙胺、吡啶、咪唑或4-氨基吡啶等有机碱的存在下, 反应活性较高, 产物的收率得到明显提高. 有机碱作用的强弱顺序为DBU>Et3N>咪唑>4-氨基吡啶>DMAP>吡啶. 在压力为8 MPa, 温度110 ℃, 反应时间48 h条件下, 马来酸锌与DBU组成的二元催化系统可以催化二氧化碳与环氧丙烷反应, 得到83.4%产率的碳酸丙烯酯. 该二元系统也能催化其它环氧化物高产率地转化为相应的环状碳酸酯.

关键词: 马来酸锌, 环氧化物, 超临界二氧化碳, 环状碳酸酯, 合成

Abstract: Under supercritical carbon dioxide conditions, the reaction of carbon dioxide and epoxides occurred with zinc maleate as the catalyst. Zinc maleate as a sole catalyst showed a low catalytic activity. The coexistence of organic bases, such as DBU, triethylamine(Et3N), imidazole, pyridin-4-ylamine, DMAP or pyridine, could promote this reaction, and the yields of the product were increased obviously. The activity order of organic bases as a function of cocatalyst was DBU>Et3N>imidazole>4-aminopyridine>DMAP>pyridine. Propylene carbonate could be obtained in 83.4% yield at 110 ℃ under 8 MPa of carbon dioxide pressure for 48 h in the presence of the binary catalyst system of zinc maleate and DBU. A verity of epoxides could also be transformed to the corresponding cyclic carbonates with a high yield in the presence of the binary catalyst system.

Key words: Zinc maleate, Epoxides, Supercritical carbon dioxide, Cyclic carbonate, Synthesis

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