Quality Control of 1-Alkyl-3-methylimidazolium Ionic Liquid Precursors with HPLC

被引：1

作者：

张延强

张建敏

陈玉涣

张锁江

机构：

[1] StateKeyLaboratoryofMulti-phaseComplexSystem,InstituteofProcessEngineering,ChineseAcademyofSciences

来源：

过程工程学报 | 2007年 / 06期

关键词：

1-methylimidazole; purity; ionic liquid; precursor; HPLC;

D O I：

暂无

中图分类号：

O657.72 [];

学科分类号：

摘要：

A high performance liquid chromatography(HPLC) method was proposed to monitor the synthesis and purification of the 1-alkyl-3-methylimidazolium ionic liquid precursors from alkylation of 1-methylimidazole with alkyl halides and determine the purity of final products.The results showed that separation of 1-methylimidazole from the precursors could be obtained under the HPLC performance conditions such as cation exchange column,acetonitrile/KH2PO4 aqueous solution and 209 nm wavelength.The content of unreacted 1-methylimidazole in the precursors could be easily calculated from their corresponding HPLC peak areas with the calibration curve of 1-methylimidazole.The retention times of the 1-alkyl-3-methylimidazolium ionic liquid precursors decreased with their increasing alkyls,and the ionic liquids with the same cation and different anions had almost the same retention times.

引用

页码：1094 / 1098

页数：5