Investigation on aggregate formation of ionic liquids

被引：150

作者：

Dorbritz, S ^{[1
]}

Ruth, W ^{[1
]}

Kragl, U ^{[1
]}

机构：

[1] Univ Rostock, Inst Chem, D-18059 Rostock, Germany

来源：

ADVANCED SYNTHESIS & CATALYSIS | 2005年 / 347卷 / 09期

关键词：

aggregates; biocatalysis; conductivity; ionic liquids; mass spectrometry;

D O I：

10.1002/adsc.200404352

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Understanding the behavior of ionic liquids on the molecular level is essential for explaining solubilizing or reaction processes, including catalytic reactions in ionic liquids or with ionic liquids as co-solvent. Using, mass spectrometry techniques it is possible to characterize their aggregate formation behavior, which depends on the used solvent. With increasing polarity of the solvent and decreasing ionic liquid concentration, the size of the formed aggregates decreases. From conductivity measurement curves "critical aggregate concentrations" were calculated, which confirm the results of mass spectrometry measurements. Addition of ionic liquids increases the solubility of acetophenone in water. This effect can be explained by the aggregate formation ability of ionic liquids. The findings can be used to explain the outstanding solubility and solvation properties of ionic liquids.

引用

页码：1273 / 1279

页数：7

共 24 条

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