[NH2-emim]Br/[Bmim]BF4离子液体中二氧化碳的电化学还原

毛信表1 刘莹1 陈达1 陈赵扬1 马淳安1

(1.浙江工业大学化学工程学院绿色化学合成技术国家重点实验室培育基地, 浙江杭州 310032)

【摘要】以2-溴乙胺氢溴酸和N-甲基咪唑盐为原料合成了氨基功能化离子液体1-(2-胺乙基)-3-甲基咪唑溴盐([NH2-emim]Br),用1H NMR和IR对所制备的离子液体进行了表征,测得25℃下[NH2-emim]Br的黏度26.691 Pa·s、电导率0.1130 m S·cm-1,CO2的溶解饱和度82%(摩尔分数),将不同含量的[NH2-emim]Br与[Emim]BF4、[Bmim]BF4、[Bmim]PF6组成二元复合离子液体,并用于CO2电化学还原研究,循环伏安研究表明,CO2在[NH2-emim]Br(0.5%)-[Bmim]BF4复合离子液体中的还原峰电位较[Bmim]BF4正移0.4 V,还原峰电流增大9倍,黏度降低为0.08227 Pa·s,电导率增大至1.317 mS·cm-1,是一种较好的CO2电化学还原离子液体体系。

【关键词】 二氧化碳; 离子液体; 二元混合物; 电化学; 循环伏安;

【DOI】

【基金资助】 国家重点基础研究发展计划项目(2012CB722604) supported by the National Basic Research Program of China(2012CB722604) 国家自然科学基金项目(21376220) the National Natural Science Foundation of China(21376220) 浙江省公益性技术应用研究计划项目(2014C31159) the Zhejiang Province Public Technology Applied Research Projects(2014C31159)

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This Article

ISSN:0438-1157

CN: 11-1946/TQ

Vol 68, No. 05, Pages 2027-2034

May 2017

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摘要

  • 引言
  • 1 实验材料和方法
  • 2 结果与讨论
  • 3 结论
  • 符号说明
  • 参考文献