| 新型BrФnsted酸性离子液体的合成与表征 |
| |
| 引用本文： | 吴芹,董斌琦,韩明汉,左宜赞,金涌.新型BrФnsted酸性离子液体的合成与表征[J].光谱学与光谱分析,2007,27(10):2027-2031. |
| |
| 作者姓名： | 吴芹 董斌琦 韩明汉 左宜赞 金涌 |
| |
| 作者单位： | 清华大学化工系，清华大学化工系，清华大学化工系，清华大学化工系，清华大学化工系 北京100084北京理工大学化工与环境学院，北京100081，北京100084，北京100084，北京100084，北京100084 |
| |
| 基金项目： | 国家自然科学基金重点项目(20436050)，北京理工大学基础研究基金项目(20070542005)资助 |
| |
| 摘 要： | 制备了五种对水稳定性好、带-SO3H官能团的磺酸类BrФnsted酸离子液体,用核磁共振(NMR)、红外光谱(IR)、电喷雾质谱(ESI-MS)、热重分析(TG)等表征手段对制备的离子液体进行了表征。结果表明,制备的离子液体与预期设计的结构一致,离子液体纯度大于95%;热重分析发现离子液体具有高的热稳定性和较宽的液态范围,其分解温度均高于300℃;五种离子液体均存在四种离子存在形式,H 可以单独以离子形式存在,并不是通常所认为的仅有两种离子存在形式。另外,研究了离子液体在常用溶剂中的溶解性,发现制备的离子液体易溶于水、甲醇,不溶于乙醚、甲苯和乙酸乙酯。
|
| 关 键 词： | 离子液体 红外光谱 核磁共振 电喷雾质谱 热重 |
| 文章编号： | 1000-0593（2007）10-2027-05 |
| 修稿时间： | 2006-06-08 |
Synthesis and characterization of novel br?nsted acidic ionic liquids |
| |
| WU Qin, DONG Bin-qi, HAN Ming-han , ZUO Yi-zan , JN Yong.Synthesis and characterization of novel br?nsted acidic ionic liquids[J].Spectroscopy and Spectral Analysis,2007,27(10):2027-2031. |
| |
| Authors: | WU Qin DONG Bin-qi HAN Ming-han ZUO Yi-zan JN Yong |
| |
| Institution: | 1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China; 2. School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China |
| |
| Abstract: | Several water-stable Br?nsted-acidic ionic liquids with an alkane sulfonic acid group were synthesized, and were characterized by nuclear magnetic resonance (NMR), infrared spectrum (IR), electrospray ionization mass spectrum (ESI-MS) and thermogravimetry (TG.). It was found that their structures were consistent with the designed one and all of their purities were more than 95%. These ionic liquids possess high thermal stability and wide liquid range, and their decomposition temperatures are higher than 300 degrees C by analyzing TG. In addition, they were found to have four kinds of ionic form, in which hydrogen ion can exist independently by analyzing ESI-MS. Moreover, the solubility of these ionic liquids was studied in some common solvents. All the ionic liquids are miscible with water and methanol, but are insoluble in ether, toluene and ethyl acetate. |
| |
| Keywords: | Ionic liquids Infrared spectrum Nuclear magnetic resonance Electrospray ionization mass spectrum Thermogravimetry |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
