标题:Ternary liquid-liquid equilibria for systems containing (dimethyl carbonate or methyl acetate plus methanol+1-methylmidazole hydrogen sulfate) at 298.15 K and 318.15 K
作者:Wena, Guilin; Geng, Xueli; Bai, Wenting; Wang, Yinglong; Gao, Jun
作者机构:[Wena, Guilin; Geng, Xueli; Bai, Wenting; Wang, Yinglong] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China.; [Gao, Jun] S 更多
通讯作者:Wang, YL
通讯作者地址:[Wang, YL]Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China.
来源:JOURNAL OF CHEMICAL THERMODYNAMICS
出版年:2018
卷:121
页码:49-54
DOI:10.1016/j.jct.2018.02.012
关键词:Liquid-liquid equilibria; Ionic liquid; Methanol; NRTL; UNIQUAC
摘要:The separation of methanol from its azeotropes is very important for the production process of vinyl alcohol and dimethyl carbonate. This work describes the feasibility of separating (methanol + methyl acetate) and (methanol + dimethyl carbonate) azeotropes by liquid-liquid extraction using ionic liquid as solvent. The ternary liquid-liquid equilibria (LLE) data for the systems of {methyl acetate + methanol + 1-methylmidazole hydrogen sulfate ([MIM]HSO4]}, {dimethyl carbonate + methanol + [MIM][HSO4]} were measured at 298.15 K and 318.15 K under atmospheric pressure. The separation factor and distribution coefficient were calculated from the experimental LLE results to evaluate the separation performance. The influence of temperature on the LLE was investigated and discussed. The experimental LLE data were satisfactorily correlated by NRTL and UNIQUAC models, the binary interaction parameters were obtained and the calculated LLE data were compared with the experimental results. (C) 2018 Elsevier Ltd.
收录类别:SCIE
资源类型:期刊论文
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