| 학회 |
한국화학공학회 |
| 학술대회 |
2013년 가을 (10/23 ~ 10/25, 대구 EXCO) |
| 권호 |
19권 2호, p.1252 |
| 발표분야 |
공업화학 |
| 제목 |
Pyridinium-based ionic liquids bearing a thiocyanate anion for the selective extraction of aromatics from aliphatic hydrocarbon mixtures |
| 초록 |
The performance of N-alkylpyridinium-based ionic liquids with a SCN anion (PyILs) was evaluated for the selective extraction of aromatics from aliphatic hydrocarbons. The aromatic extraction ability of PyILs was greatly enhanced by the presence of a methyl group on the pyridinium ring at the 3- or 4-position, whereas the solubility of the aromatics in the PyILs decreased with increasing number of methyl groups on the benzene ring. The FT-IR studies revealed that the solubility of an aromatic compound in a PyIL is closely correlated with the degree of aromatic C-H bending frequency shift observed during the dissolution of the aromatic compound in the PyIL: the larger the shift, the higher the solubility. The computational calculations on the dispersion interactions between aromatics and PyILs demonstrated that the anion-aromatic interaction is much more important than the cation-aromatic interaction in determining the aromatic solubility in PyILs, and such anion-aromatic interaction can be enhanced by introducing a methyl group at the carbon atom of the pyridinium ring. |
| 저자 |
김민지, 황준혁, 김훈식, 정민석
|
| 소속 |
경희대 |
| 키워드 |
Aromatics separation; Ionic liquids; Liquid-liquid extraction; Sulfolane process
|
| E-Mail |
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| 원문파일 |
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