【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。更多还原

【Abstract】 Amine-functionalized ionic liquid,1-（2-aminoethyl）-3-methyl imidazolium bromide（[NH₂-emim]Br）,was synthesized from 2-bromoethylamine hydrobromide and N-methyl imidazole salt at reflux condition and characterized by ¹H NMR and IR.Viscosity,electric conductivity and saturated carbon dioxide solubility in[NH₂-emim]Br ionic liquid measured at 25℃were 26.691 Pa·s,0.1130 mS·cm^-1 and 82%by molar ratio,respectively.Binary ionic liquid composites of[NH₂-emim]Br/[Emim]BF₄,[NH₂-emim]Br/[Bmim]BF₄,and[NH₂-emim]Br/[Bmim]PF6 were prepared at different mass ratios and used for electrochemical reduction of CO₂.The results of cyclic voltammetry at room temperature showed that peak current of CO₂ reduction in[NH₂-emim]Br（0.5%）-[Bmim]BF₄ was increased about 9 times than that in[Bmim]BF₄ and reduction peak potential was shifted positively by 0.4 V.With viscosity decrease to 0.08227 Pa·s and electrical conductivity increase to 1.317 mS·cm^-1,the binary ionic liquid composite is a good ionic liquid system for CO₂electrochemical reduction.更多还原