Solubility of CO2 in the Ionic Liquids [bmim][CH3SO4] and [bmim][PF6]
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- 作者：Jacek Kume
p ; //pubs.acs.org/images/entities/lstrok.gif" border="0">an ; Á ; lvaro Pé ; rez-Salado Kamps ; Dirk Tuma ; Gerd Maurer
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2006
- 出版时间：September 2006
- 年：2006
- 卷：51
- 期：5
- 页码：1802 - 1807
- 全文大小：76K
- 年卷期：v.51,no.5(September 2006)
- ISSN：1520-5134
文摘
A high-pressure view-cell technique based on the synthetic method was used to determine the solubility of carbondioxide in the ionic liquid 1-n-butyl-3-methylimidazolium methyl sulfate ([bmim][CH3SO4]). The temperatureranged from 293.2 K to 413.1 K, the pressure and the carbon dioxide molality reached up to ~10 MPa and ~3.3mol of CO2·(kg of [bmim][CH3SO4])-1, respectively. The (extended) Henry's law was successfully applied tocorrelate the solubility pressures. The final results for the Henry's constant (at zero pressure) of carbon dioxidein [bmim][CH3SO4] (on the molality scale) are correlated within the estimated uncertainty (± 1.3 %) byln(
/MPa) = 7.2738 - 1775/(T/K) - 0.002033(T/K). Furthermore, some small corrections were applied tothe experimental results for the solubility of carbon dioxide in the ionic liquid 1-n-butyl-3-methylimidazoliumhexafluorophosphate ([bmim][PF6]) reported in previous work. The corrected values for the Henry's constant ofcarbon dioxide in [bmim][PF6] only slightly and systematically deviate (by about -2 % at given temperature)from the values reported previously.
/MPa) = 7.2738 - 1775/(T/K) - 0.002033(T/K). Furthermore, some small corrections were applied tothe experimental results for the solubility of carbon dioxide in the ionic liquid 1-n-butyl-3-methylimidazoliumhexafluorophosphate ([bmim][PF6]) reported in previous work. The corrected values for the Henry's constant ofcarbon dioxide in [bmim][PF6] only slightly and systematically deviate (by about -2 % at given temperature)from the values reported previously.