Solubility of SO2 in Caprolactam Tetrabutyl Ammonium Bromide Ionic Liquids
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- 作者：Bin Guo ; Erhong Duan ; Ailing Ren ; Yang Wang ; Haiying Liu
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2010
- 出版时间：March 11, 2010
- 年：2010
- 卷：55
- 期：3
- 页码：1398-1401
- 全文大小：131K
- 年卷期：v.55,no.3(March 11, 2010)
- ISSN：1520-5134
文摘
To explore environmentally benign solvents for absorbing SO2, a series of caprolactam tetrabutyl ammonium bromide ionic liquids were synthesized, the solubilities of SO2 in which were measured at (298.2 to 403.2) K and atmospheric pressure. The solubilities of SO2 in these ionic liquids were 0.680 at 298.2 K and ambient pressure and decreased sharply as temperature increased and increased with the increasing mole ratio of caprolactam. A fifth-order polynomial was proposed and verified by experimental solubility data. The absorption and desorption of SO2 were practically reversible in the synthesized ionic liquids.