Abstract
Several water-stable and task-specific Bronsted-acidic ionic liquids were synthesized, each system consisting of the methyl pyridinium ion ([MPy]+), or quaternary ammonium ion ([Et3NH]+), or sultone pyridinium ion ([SPy]+) as the cation, and either dihydric phosphate (H2PO4-), or bisulfate ion (HSO4-), or nitrate ion (NO3-) as the anion. They were characterized by nuclear magnetic resonance (NMR), infrared spectrum (IR), and electrospray ionization mass spectrum (ESI-MS). It was confirmed that their structures were consistent with the designed structure and their purities were more than 95%. So the method of synthesis and purification is proved to be proper.
| Original language | English |
|---|---|
| Pages (from-to) | 55-58 |
| Number of pages | 4 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 27 |
| Issue number | SUPPL. 2 |
| Publication status | Published - Dec 2007 |
Keywords
- Electrospray ionization mass spectrum
- Infrared spectrum
- Ionic liquids
- Nuclear magnetic resonance