Ying Hou, R. Baltus
Oct 18, 2007
Citations
2
Influential Citations
225
Citations
Quality indicators
Journal
Industrial & Engineering Chemistry Research
Abstract
In this paper, results from an experimental investigation of carbon dioxide (CO2) solubility and diffusivity in the ionic liquids 1-n-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][Tf2N]), 1,2-dimethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide ([pmmim][Tf2N]), 1-butyl-3-methylpyridinium bis(trifluoromethyl sulfonyl)imide ([bmpy][Tf2N]), 1-(3,4,5,6-perfluorohexyl)-3-methylimdazolium bis(trifluoromethyl sulfonyl)imide ([perfluoro-hmim][Tf2N]), and 1-n-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) are reported. A transient thin liquid film method was developed, which enables one to determine the Henry's law constant and the diffusivity at low pressure simultaneously. Measurements were performed at temperatures in the range of 283−323 K. Henry's law constants were in the range of 25.5−84 bar and were in general agreement with measurements reported by other researchers for these and similar ionic liquids. The entropies and enthalpies of absorption were determined to...