化学工程2023，Vol.51Issue(12)：51-55,5.DOI:10.3969/j.issn.1005-9954.2023.12.011
离子液体-乙醇-庚烷液液相平衡数据的测定关联
Measurement and correlation of liquid-liquid equilibrium data for ionic liquid-n-ethanol-heptane ternary system
摘要
Abstract
The method of balancing kettle was adopted to determine liquid-liquid equilibrium data of {[BMIM][TFA](monobutyl trimethylimidazole trifluoroacetate),[BMIM][DCA](monobutyl trimethylimidazole dicyandiamide)and[BMIM][SCN](monobutyl trimethylimidazole thiocyanate)}+ethanol+heptane at atmospheric temperature of 303.15 K.Bachman equation and Othmer-Tobias equation were used to test the thermodynamic consistency of the experimental data,and the linear correlation coefficients were both greater than 0.99.The separation performance of the three ionic liquids was compared by the distribution coefficient and selectivity calculated from the experimental data.Aspen Plus v11 simulation software was used to regression the experimental data to obtain the binary interaction parameters,and the ERMSD of comparison experiments were all less than 4％.In conclusion,the separation of ethanol-n-heptane system by ionic liquid extraction is feasible,and dicyandiamide ionic liquid has better exploration value.关键词
液液相平衡/离子液体/乙醇/庚烷/NRTL方程Key words
liquid-liquid equilibrium/ionic liquid/n-ethanol/heptane/NRTL equation分类
化学工程引用本文复制引用
陈洪亮,杨帆,卢摇,林童,于晓环,张志刚,张亲亲,辛华..离子液体-乙醇-庚烷液液相平衡数据的测定关联[J].化学工程,2023,51(12):51-55,5.基金项目
国家自然科学基金资助项目(21978173) （21978173）
沈阳化工大学优秀青年基金资助项目(2019YQ002) （2019YQ002）
辽宁省自然科学基金资助项目(2021-NLTS-12-05) （2021-NLTS-12-05）
