含离子液体乙腈-正丙醇体系的等压汽液平衡

doi:10.11949/j.issn.0438-1157.20141907

CIESC Journal ›› 2015, Vol. 66 ›› Issue (S1): 38-44.DOI: 10.11949/j.issn.0438-1157.20141907

含离子液体乙腈-正丙醇体系的等压汽液平衡

李文秀, 张琦, 张亲亲, 张志刚

沈阳化工大学化学工程学院, 辽宁省化工分离技术重点实验室, 辽宁沈阳 110142

收稿日期:2014-12-23 修回日期:2014-12-30 出版日期:2015-06-30 发布日期:2015-06-30
通讯作者: 张志刚
基金资助:
国家自然科学基金项目(21076126)。

Isobaric vapor-liquid equilibrium for system of acetonitrile-n-propanol system containing ionic liquids

LI Wenxiu, ZHANG Qi, ZHANG Qinqin, ZHANG Zhigang

Liaoning Provincial Key Laboratory of Chemical Separation Technology, College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China

Received:2014-12-23 Revised:2014-12-30 Online:2015-06-30 Published:2015-06-30
Supported by:
supported by the National Natural Science Foundation of China (21076126).

摘要/Abstract

摘要： 常压(101.3 kPa)下, 测定了如下体系的汽液平衡数据:乙腈-正丙醇-氯化1-苄基-3-甲基咪唑([BzMIM][Cl])、乙腈-正丙醇-溴化1-苄基-3-甲基咪唑([BzMIM][Br])、乙腈-正丙醇-溴化1-己基-3-甲基咪唑([HMIM][Br]), 考察了3种离子液体对乙腈-正丙醇体系相平衡行为的影响。实验结果表明, 3种离子液体都能够提高乙腈对正丙醇的相对挥发度, 3种离子液体提高相对挥发度的顺序为 [BzMIM][Cl] > [BzMIM][Br] > [HMIM][Br]。用NRTL模型对测得的汽液平衡数据进行了关联, 关联结果与实验结果具有良好的一致性。

关键词: 离子液体, 乙腈, 正丙醇, 相对挥发度, 汽液平衡

Abstract: Isobaric vapor liquid equilibrium (VLE) for the acetonitrile-n-propanol system containing different ionic liquids (ILs) at atmospheric pressure (101.3 kPa) was measured. The employed ionic liquids (ILs) are 1-benzyl-3-methylimidazolium chloride ([BzMIM][Cl]), 1-benzyl-3-methylimidazolium bromide ([BzMIM][Br]) and 1-hexyl-3-methylimidazolium bromide ([HMIM][Br]). The results showed that all the three ILs could enhance the relative volatility of acetonitrile to n-propanol. The order of the separation ability of ILs is [BzMIM][Cl] > [BzMIM][Br] > [HMIM][Br]. The ternary vapor liquid equilibrium experimental data were fitted with the nonrandom two-liquid (NRTL) model. It was demonstrated that NRTL model was suitable for the description of the ternary system of acetonitrile + n-propanol + IL.

Key words: ionic liquid, acetonitrile, n-propanol, relative volatility, vapor-liquid equilibrium

中图分类号:

O642.42

李文秀, 张琦, 张亲亲, 张志刚. 含离子液体乙腈-正丙醇体系的等压汽液平衡[J]. CIESC Journal, 2015, 66(S1): 38-44.

LI Wenxiu, ZHANG Qi, ZHANG Qinqin, ZHANG Zhigang. Isobaric vapor-liquid equilibrium for system of acetonitrile-n-propanol system containing ionic liquids[J]. , 2015, 66(S1): 38-44.

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含离子液体乙腈-正丙醇体系的等压汽液平衡

Isobaric vapor-liquid equilibrium for system of acetonitrile-n-propanol system containing ionic liquids

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