SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (10): 1728-1732.DOI: 10.1016/j.cjche.2015.08.005

• 材料与产品工程 • 上一篇    下一篇

Synthesis and characterization of switchable ionic compound based on DBU, CH3OH, and CO2

Yuan Xie1,2, Richard Parnas1,3, Bin Liang1,2, Yingying Liu2, Chuandong Tao1,2, Houfang Lu1,2   

  1. 1 College of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2 Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China;
    3 Institute of Materials Science, Univ. of Connecticut, Storrs CT 06269-3136, USA
  • 收稿日期:2015-02-10 修回日期:2015-07-25 出版日期:2015-10-28 发布日期:2015-11-27
  • 通讯作者: Houfang Lu
  • 基金资助:
    Supported by the Doctoral Fund of Ministry of Education of China (20130181130006), the Key Program of National Natural Science Foundation of China (21336008), and the National Natural Science Foundation of China (21476150).

Synthesis and characterization of switchable ionic compound based on DBU, CH3OH, and CO2

Yuan Xie1,2, Richard Parnas1,3, Bin Liang1,2, Yingying Liu2, Chuandong Tao1,2, Houfang Lu1,2   

  1. 1 College of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2 Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China;
    3 Institute of Materials Science, Univ. of Connecticut, Storrs CT 06269-3136, USA
  • Received:2015-02-10 Revised:2015-07-25 Online:2015-10-28 Published:2015-11-27
  • Supported by:
    Supported by the Doctoral Fund of Ministry of Education of China (20130181130006), the Key Program of National Natural Science Foundation of China (21336008), and the National Natural Science Foundation of China (21476150).

摘要: Switchable ionic compounds have wide applications in chemical processes. A switchable ionic compound based on 1,8-diazabicyclo-[5.4.0]-undec-7-ene (DBU), CH3OH and CO2 was synthesized and characterized. DBU/ CH3OH/CO2 ionic compound was prepared in the presence of excess methanol, and then the excess methanol was removed by reduced pressure distillation in CO2 atmosphere. The product yield (100%) reached the theoretical maximumfor the first time. Its structurewas identified by NMR, FT-IR, and XRD. The crystal product shows 8 strong peaks in XRD at 2θ values of 16.0547°, 16.4308°, 16.7651°, 18.8714°, 19.2140°, 21.9471°, 22.0780°, and 25.5661°. Its decomposition onset temperature (53 ℃) was affirmed by TGA, which is lower than its melting point. And its ionic switch point was measured by conductivity.

关键词: DBU, Switchable ionic compounds, Synthesis

Abstract: Switchable ionic compounds have wide applications in chemical processes. A switchable ionic compound based on 1,8-diazabicyclo-[5.4.0]-undec-7-ene (DBU), CH3OH and CO2 was synthesized and characterized. DBU/ CH3OH/CO2 ionic compound was prepared in the presence of excess methanol, and then the excess methanol was removed by reduced pressure distillation in CO2 atmosphere. The product yield (100%) reached the theoretical maximumfor the first time. Its structurewas identified by NMR, FT-IR, and XRD. The crystal product shows 8 strong peaks in XRD at 2θ values of 16.0547°, 16.4308°, 16.7651°, 18.8714°, 19.2140°, 21.9471°, 22.0780°, and 25.5661°. Its decomposition onset temperature (53 ℃) was affirmed by TGA, which is lower than its melting point. And its ionic switch point was measured by conductivity.

Key words: DBU, Switchable ionic compounds, Synthesis