%0 Journal Article
%T Quality Control of 1-Alkyl-3-methylimidazolium Ionic Liquid Precursors with HPLC
%A ZHANG Yan-qiang
%A ZHANG Jian-min
%A CHEN Yu-huan
%A ZHANG Suo-jiang
%A <br>张延强
%A 张建敏
%A 陈玉焕
%A 张锁江
%J 过程工程学报
%D 2007
%I 
%X 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.
%K 1-methylimidazole
%K purity
%K ionic liquid
%K precursor
%K HPLC<br>质量控制
%K 1-烃基-3-甲基咪唑
%K 液相色谱
%K 离子性液体
%K 前体
%K 纯度
%K 1-甲基咪唑
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=8EE9538260F86418543F368102EC6717&yid=A732AF04DDA03BB3&vid=DF92D298D3FF1E6E&iid=B31275AF3241DB2D&sid=6B48C3DA6EA0194C&eid=4759DE41370E2E7A&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=14